435.0000
Family
Ericaceae Juss.; Gen. Pl. 159 (1789), nom. cons.
127 genera, ca. 4500 spp. The inclusion of Empetraceae, Pyrolaceae, Epacridaceae and Monotropaceae follows conclusive molecular evidence.
Species listed in database: 4551; hybrids: 125
= Andromedaceae Döll; Rhein. Fl. 428 (1843)
= Arbutaceae Bromhead; Mag. Nat. Hist., n. s. 4: 337, 338 (1840)
= Arctostaphylaceae J.Agardh; Theoria Syst. Pl. 106 (1858)
= Azaleaceae Vest; Anleit. Stud. Bot. 272, 294 (1818)
= Diplarchaceae Klotzsch; Allgem. Deutsch. Nat. Hist. Zeit. 3: 230 (1857)
= Empetraceae Hook. & Lindl.; W. J. Hook., Fl. Scot. 297 (1821), nom. cons.
= Epacridaceae R.Br.; Prodr. 535 (1810), nom. cons.
= Hypopityaceae Klotzsch; Linnaea 24: 11 (1851)
= Ledaceae J.F.Gmel.; Allg. Gesch. Pflanzengifte, ed. 2: 404 (1803)
= Menziesiaceae Klotzsch; Linnaea 24: 11 (1851)
= Monotropaceae Nutt.; Gen. N. Amer. Pl. [Nuttall] 1: 272 (1818), nom. cons.
= Oxycoccaceae A.Kern.; Pflanzenleben 2: 713, 714 (1891)
= Prionotaceae Hutch.; Evol. Phylog. Fl. Pl. 306 (1969)
= Pyrolaceae Lindl.; Syn. Brit. Fl. 175 (1829), nom. cons.
= Rhododendraceae Juss.; Gen. Pl. 158 (1789)
= Rhodoraceae Vent.; Tabl. Regn. Vég. 2: 449 (1799)
= Salaxidaceae J.Agardh; Theoria Syst. Pl. 104 (1858)
= Salazariaceae F.A.Barkley; Phytologia 32: 304 (1975)
= Stypheliaceae Horan.; Prim. Lin. Syst. Nat. 72 (1834)
= Vacciniaceae DC. ex Perleb; Vers. Arzneikr. Pfl. 228 (1818), nom. cons.
435.5501
Genus
Rhododendron L.; Sp. Pl. [Linnaeus] 392 (1753)
Distribution: Europe (9), Asia, esp. China (ca. 560), Himalayas and montane Malesia, esp. New Guinea (174), Australia (1), North America (ca. 25); Russia (S-Siberia, Far East) and Caucasus (ca. 20). Following molecular results, the genus is taken in a broad sense, including Ledum, Menziesia and others.
Species listed in database: 1085; hybrids: 76
= Anthocoma K.Koch; Hort. Dendrol. 338 (1853)
= Anthodendron Rchb.; Moessl. Handb. 1: p. 40: 244, 308 (1827)
= Azalea L.; Sp. Pl. [Linnaeus] 1: 150 (1753), nom. rej.
= Azaleastrum Rydb.; Mem. New York Bot. Gard. 1: 297 (1900)
= Biltia Small; Fl. S.E. U.S. [Small] 884 (1903)
= Candollea Baumg.; Cat. Hort. Bollw. (1810)
= Chamaecistus Regel; Gartenflora 60 (1874)
= Chamaerhododendron Mill.; Gard. Dict. Abr., ed. 4 (1754)
= Diplarche Hook.f. & Thomson; Hooker´s J. Bot. Kew Gard. Misc. 6: 382. t. 11 (1854)
= Dulia Adans.; Fam. 2: 165 (1763)
= Haustrum Noronha; Verh. Batav. Genootsch. Kunst. 5(4): 2 (1790), nom. nud.
= Hochenwartia Crantz; Inst. 2: 468 (1766)
= Hymenanthes Blume; Bijdr. Fl. Ned. Ind. 862 (1826)
= Iposues Raf.; Autik. Bot. 186 (1840)
= Ledum Ruppius ex L.; Sp. Pl. [Linnaeus] 391 (1753)
= Loiseleria Rchb.; Fl. Germ. Excurs. 1: 416 (1831)
= Menziesia Sm.; Pl. Ic. Ined. I. 56 (1791)
= Osmothamnus DC.; Prod. 7: 715 (1839)
= Plinthochroma Dulac; Fl. Hautes-Pyrénées 419 (1867)
= Rhodora L.; Sp. Pl., ed. 2 [Linnaeus] 2: 561 (1763)
= Rhodothamnus Lindl. & Paxton; Paxton´s Fl. Gard. 1: t. 22 (1850), nom. illeg.
= Stemotis Raf.; Sylva Tellur. 152 (1838)
= Theis Salisb. ex DC.; Prod. 7: 715 (1835)
= Theis Salisb. ex DC.; Prodr. [A. P. de Candolle] 7: 715 (1839), nom. inval.
= Therorhodion (Maxim.) Small; N. Amer. Fl. 29: 45 (1914)
= Tsusiophyllum Maxim.; Mém. Acad. Imp. Sci. Saint Pétersbourg, Sér. 7, 16(9): 12 (1871)
= Tsutsusi Adans.; Fam. 2: 164 (1763)
= Vireya Blume; Bijdr. Fl. Ned. Ind. 854 (1826)
= Waldemaria Klotzsch; Bot. Ergebn. Reise Waldemar [Klotzsch & Garcke] 99 (1862)
= xAzaleodendron Rodigas; Gard. Chron., Ser. 3, 13: 665 (1893)
= xLedodendron F.de Vos; Quart. Bull. Amer. Rhododendron Soc. 16: 272 (1962)
= xRhodazalea Anon.; J. Soc. Natl. Hort. France, Sér. 4, 9: 328 (1908)
species :
Rhododendron aberconwayi
Cowan; Rhododendron Year Book 1948: 42 (1948)
Distribution: China (C-Yunnan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Irrorata
Synonyms: hidden
= Rhododendron maxiongense C.Q.Zhang & D.Paterson; Novon 13: 156 (2003)
species :
Rhododendron abhayae
L.K.Rai; NeBIO 5(2): 27 (2014)
Distribution: India (Sikkim)
40 IND
species :
Rhododendron abietifolium
Sleumer; Blumea 11: 122 (1961)
Distribution: N-Borneo (Sabah)
42 BOR
Remarks: Subgen. Rhododendron
species :
Rhododendron acrophilum
Merr. & Quisumb.; Philipp. J. Sci. 82: 333 (1954)
Distribution: Palawan
42 PLW
Remarks: Subgen. Rhododendron
species :
Rhododendron acuminatum
Hook.f.; Hooker´s Icon. Pl., t. 886 (1852)
Distribution: Borneo
42 BOR
Remarks: Subgen. Rhododendron
species :
Rhododendron adamsii
Rehder; Wilson & Rehder, Monogr. Azaleas, 190 (1921)
Distribution: Siberia (Buryatia, Chita, Irkutsk, Krasnoyarsk, Tuva, Yakutia); Russian Far East (Amur, Khabarovsk, Magadan, Sakhalin); Mongolia
30 SIB 31 RFE 37 MON
Remarks: Subgen. Rhododendron, Sect. Pogonanthum
Synonyms: hidden
= Azalea fragrans Adams; Mém. Acad. Petersb. 2: 332 (1808)
= Azalea multiflora Turcz. ex DC.; Prodr. [A. P. de Candolle] 7: 715 (1839)
= Osmothamnus fragrans (Adams) DC.; Prod. 7: 715 (1839)
= Rhododendron anthopogon var. fragrans B.Fedtsch.; Fl. Asiat. Ross. 9: 15 (1916)
= Rhododendron fragrans (Adams) Maxim.; Rhod. As. Or. 16 (1870)
species :
Rhododendron adenanthum
M.Y.He; J. Sichuan Univ., Nat. Sci. Ed. 1984(1): 94, photo 2 (1984)
Distribution: China (NE-Guangxi)
36 CHI
species :
Rhododendron adenobracteum
X.F.Gao & Y.L.Peng; Acta Bot. Yunnan. 26(5): 493 (2004)
Distribution: China (Sichuan)
36 CHI
species :
Rhododendron adenogynum
Diels; Notes Roy. Bot. Gard. Edinburgh 5(25): 216 (1912)
Distribution: China (SW-Sichuan, NW-Yunnan); SE-Tibet
36 CHI TIB
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Taliensia
Synonyms: hidden
= Rhododendron adenophorum Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 9(44-45): 211-212 (1916)
species :
Rhododendron adenopodum
Franch.; J. Bot. [Morot] 9(21): 391-392 (1895)
Distribution: China (E-Sichuan, W-Hubei, Chongqing)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Argyrophylla
Synonyms: hidden
= Rhododendron simiarum subsp. youngae (W.P.Fang) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 37(2): 329 (1979)
= Rhododendron youngae W.P.Fang; Contr. Biol. Lab. Sci. Soc. China, Bot. Ser. 12: 24 (1939)
species :
Rhododendron adenosum
(Cowan & Davidian) Davidian; Quart. Bull. Amer. Rhododendron Soc. 32(2): 81 (1978)
Distribution: China (SW-Sichuan); ?India (?Arunachal Pradesh)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Glischra
Synonyms: hidden
= Rhododendron glischrum var. adenosum Cowan & Davidian; Notes Roy. Bot. Gard. Edinburgh 21(3): 147 (1953)
= Rhododendron kuluense D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 36: 116 (1978), nom. nov. superfl.
species :
Rhododendron adinophyllum
Merr.; Notul. Nat. Acad. Nat. Sci. Philadelphia No. 47, 3 (1940)
Distribution: N-Sumatra
42 SUM
Remarks: Subgen. Rhododendron
species :
Rhododendron aequabile
J.J.Sm.; Bull. Jard. Bot. Buitenz., Ser. 3, 13: 451 (1935)
Distribution: Sumatra
42 SUM
species :
Rhododendron aeruginosum
Hook.f.; Rhododendron Sikkim Himalaya 23, t. 22 (1849)
Distribution: S-Tibet; Nepal; Bhutan; N-India (Sikkim, Chumbi)
36 TIB 40 BHU IND NEP
Synonyms: hidden
= Rhododendron campanulatum subsp. aeruginosum (Hook.f.) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 37(2): 329 (1979)
= Rhododendron campanulatum var. aeruginosum (Hook.f.) Cowan & Davidian; Rhododendron Year Book 4: 168 (1949), isonym
= Rhododendron campanulatum var. aeruginosum (Hook.f.) G.Nicholson; Ill. Dict. Gard. 3: 293 (1886)
species :
Rhododendron afghanicum
Aitch. & .Hemsl.; J. Linn. Soc., Bot. 18: 75 (1880)
Distribution: Afghanistan (Laghman, Paktia / Khost); Pakistan (Kurram)
34 AFG 40 PAK
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Afghanica
species :
Rhododendron aganniphum
Balf.f. & Kingdon-Ward; Notes Roy. Bot. Gard. Edinburgh 10(47-48): 80-81 (1917)
Distribution: China (S-Qinghai, W-Sichuan, NW-Yunnan); SE-Tibet
36 CHI TIB
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Taliensia
Synonyms: hidden
= Rhododendron aganniphum var. glaucopeplum (Balf.f. & Forrest) T.L.Ming; Acta Bot. Yunnan. 6(2): 165 (1984)
= Rhododendron glaucopeplum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 46-47 (1920)
variant :
var. flavorufum
(Balf.f. & Forrest) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 36(1): 119 (1978)
Distribution: China (SW-Sichuan, NW-Yunnan); SE-Tibet
36 CHI TIB
Synonyms: hidden
= Rhododendron flavorufum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 11(52-53): 65-69 (1919)
variant :
var. schizopeplum
(Balf.f. & Forrest) T.L.Ming; Acta Bot. Yunnan. 6(2): 165 (1984)
Distribution: China (NW-Yunnan); SE-Tibet
36 CHI TIB
Synonyms: hidden
= Rhododendron doshongense Tagg; Notes Roy. Bot. Gard. Edinburgh 15: 310 (1927)
= Rhododendron fissotectum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 44-45 (1920)
= Rhododendron schizopeplum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 11(52-53): 131-133 (1919)
species :
Rhododendron agathodaemonis
J.J.Sm.; Repert. Spec. Nov. Regni Veg. 12: 209 (1913)
Distribution: New Guinea (Irian Jaya, Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron alabamense
Rehder; Wilson & Rehder, Monogr. Azaleas, 141 (1921)
Name: Alabama azalea
Distribution: USA (Alabama, Florida, Georgia, Mississippi, Tennessee)
78 USA
Remarks: Subgen. Pentanthera, Sect. Pentanthera
Synonyms: hidden
= Azalea alabamensis (Rehder) Ashe; J. Elisha Mitchell Sci. Soc. 38(1-2): 90 (1922) in clavi
= Azalea nudiflora var. alba Mohr; Pl. Life Alabama 653 (1901), nom. illeg.
species :
Rhododendron albertsenianum
Forrest in Balf.f.; Notes Roy. Bot. Gard. Edinburgh 11(52-53): 21-23 (1919)
Distribution: China (W-Yunnan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Neriiflora
species :
Rhododendron albiflorum
Hook.; Fl. Bor. Amer. 2: 43. t. 33 (1834); ex Graham in Edinburgh New Philos. J. 24: 422 (1838)
Name: Cascade azalea
Distribution: Canada (Alberta, British Columbia); USA (Colorado, Idaho, Montana, Oregon, Washington State)
71 CDN 73 USA
Remarks: Subgen. Candidastrum
Synonyms: hidden
= Azalea albiflora (Hook.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Azaleastrum albiflorum (Hook.) Beck & Abel; Wiener Ill. Gart.-Zeitung 13: 435 (1888)
= Azaleastrum albiflorum (Hook.) Rydb.; Mem. New York Bot. Gard. 1: 297 (1900)
= Azaleastrum albiflorum subsp. warrenii (A.Nelson) W.A.Weber; Phytologia 79(2): 65 (1995 publ. 1996)
= Azaleastrum warrenii A.Nelson; Bot. Gaz. 56: 67 (1913)
= Cladothamnus campanulatus Greene; Erythea 3: 65 (1895)
= Rhododendron albiflorum f. poikilon J.K.Henry; Torreya 14: 46 (1914)
= Rhododendron albiflorum var. warrenii (A.Nelson) M.A.Lane; Rhodora 95: 18 (1993), without basionym ref.
= Rhododendron album Hoffmanns.; Verz. Pfl. 192 (1824)
= Rhododendron warrenii (A.Nelson) J.F.Macbr.; Contr. Gray Herb., n. s. 56: 55 (1918)
species :
Rhododendron alborugosum
Argent & J.Dransf.; Notes Roy. Bot. Gard. Edinburgh 46(1): 27 (1989)
Distribution: Borneo (Kalimantan)
42 BOR
species :
Rhododendron albrechtii
Maxim.; Bull. Acad. Petersb. 15: 227 (1871)
Distribution: Japan (Hokkaido, Honshu)
38 JAP
Remarks: Subgen. Pentanthera, Sect. Sciadorhodion
Synonyms: hidden
= Azalea albrechtii (Maxim.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron albrechtii f. albiflorum T.Yamaz.; Rev. Gen. Rhododendron Japan, Taiwan, Korea & Sakhalin 121 (1996)
= Rhododendron albrechtii f. canescens Sugim.; J. Geobot. 22(4): 52 (1975)
= Rhododendron albrechtii f. hypoleucum (Honda) H.Hara; Enum. Spermatophytarum Japon. 1: 27 (1948)
species :
Rhododendron album
Blume; Cat. Gew. Buitenz. 72 (1823)
Distribution: Java
42 JAW
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Azalea alba (Blume) Blume ex DC.; Prodr. [A. P. de Candolle] 7: 721 (1839)
= Stemotis album (Blume) Raf.; Sylva Tellur. 153 (1838)
= Vireya alba (Blume) Blume; Bijdr. Fl. Ned. Ind. 855 (1826)
species :
Rhododendron alternans
Sleumer; Reinwardtia 5: 159 (1960)
Distribution: C-Sulawesi
42 SUL
Remarks: Subgen. Rhododendron
species :
Rhododendron alticolum
Sleumer; Reinwardtia 5: 164 (1960)
Distribution: New Guinea (Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron alutaceum
Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 10(47-48): 81-83 (1917)
Distribution: China (W-Sichuan, NW-Yunnan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Taliensia
Synonyms: hidden
= Rhododendron globigerum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13: 259 (1922)
= Rhododendron roxieanum var. globigerum (Balf.f. & Forrest) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 36(1): 119 (1978)
variant :
var. iodes
(Balf.f. & Forrest) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 39(2): 350, Map 104 (1982)
Distribution: China (Sichuan, NW-Yunnan); SE-Tibet
36 CHI TIB
Synonyms: hidden
= Rhododendron iodes Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 49-50 (1920)
variant :
var. russotinctum
(Balf.f. & Forrest) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 36(1): 119 (1978)
Distribution: China (NW-Yunnan); SE-Tibet
36 CHI TIB
Synonyms: hidden
= Rhododendron russotinctum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 11(52-53): 129-131 (1919)
= Rhododendron triplonaevium Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 62-63 (1920)
= Rhododendron tritifolium Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 63 (1920)
species :
Rhododendron amagianum
(Makino) Makino ex H.Hara; Enum. Spermatophytarum Japon. 1: 27 (1948)
Distribution: Japan (Honshu)
38 JAP
Remarks: Subgen. Tsutsusi, Sect. Brachycalyx
Synonyms: hidden
= Azalea amagiana Makino; J. Jap. Bot. 7: 21 (1931)
= Rhododendron weyrichii var. amagianum (Makino ex H.Hara) Hatus.; Sci. Rep. Yokosuka City Mus. 15: 23 (1969)
species :
Rhododendron amakusaense
(Takada ex T.Yamaz.) T.Yamaz.; J. Jap. Bot. 62(3): 72 (1987)
Distribution: Japan (Kyushu)
38 JAP
Remarks: Subgen. Tsutsusi, Sect. Brachycalyx
Synonyms: hidden
= Rhododendron viscistylum var. amakusaense K.Takada ex T.Yamaz.; J. Jap. Bot. 59: 205 (1984)
species :
Rhododendron amandum
Cowan; Notes Bot. Gard. Edinb. 19: 245 (1937)
Distribution: Tibet
36 TIB
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Maddenia
species :
Rhododendron ambiguum
Hemsl.; Bot. Mag. t. 8400 (1911)
Distribution: China (C-Sichuan, W-Sichuan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Triflora. Probably syn. of R. wongii
Synonyms: hidden
= Rhododendron chengshienianum W.P.Fang; Ic. Pl. Omeiensium 1: t. 36 (1942)
species :
Rhododendron amesiae
Rehder & E.H.Wilson; Sarg., Pl. Wilson. [Sargent] 1: 523 (1913)
Distribution: China (W-Sichuan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Triflora
species :
Rhododendron amundsenianum
Hand.-Mazz.; Anz. Akad. Wiss. Wien, Math.-Naturwiss. Kl. 58: 25 (1921)
Distribution: China (SW-Sichuan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Lapponica
species :
Rhododendron anagalliflorum
Wernham; Trans. Linn. Soc. London, Bot. 9: 94 (1916)
Distribution: New Guinea (Irian Jaya, Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron linnaeoides Schltr.; Bot. Jahrb. Syst. 55: 144 (1917)
species :
Rhododendron andrineae
Danet; Adansonia 34(2): 347 (2012)
Distribution: New Guinea (Irian Jaya)
42 NWG
species :
Rhododendron angiense
J.J.Sm.; Nova Guinea 12: 133 (1914)
Distribution: New Guinea (Irian Jaya, Papua New Guinea)
42 NWG
Synonyms: hidden
= Rhododendron culminicola var. angiense (J.J.Sm.) Sleumer; Blumea 12: 114 (1963)
species :
Rhododendron angulatum
J.J.Sm.; Bull. Jard. Bot. Buitenz., Ser. 2, 8: 50 (1912)
Distribution: New Guinea (Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron annae
Franch.; J. Bot. [Morot] 12(15-16): 258 (1898)
subspecies :
subsp. annae
Distribution: China (W-Guizhou)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Irrorata
subspecies :
subsp. laxiflorum
(Balf.f. & Forrest) T.L.Ming; Acta Bot. Yunnan. 6(2): 149-150 (1984)
Distribution: China (W-Yunnan)
36 CHI
Synonyms: hidden
= Rhododendron hardingii Forrest ex Tagg; Spec. Rhododendron 344 (1930), et Notes Bot. Gard. Edinb. 16: 196 (1931), latine
= Rhododendron laxiflorum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 50-51 (1920)
species :
Rhododendron anthopogon
D.Don; Mem. Wern. Nat. Hist. Soc. 3: 409 (1821)
subspecies :
subsp. anthopogon
Distribution: S-Tibet; Nepal; Bhutan; N-India (Arunachal Pradesh, Himachal Pradesh, Sikkim, Uttarakhand, West Bengal, Darjeeling); Myanmar (Kachin)
36 TIB 40 BHU IND NEP 41 MYA
Remarks: Subgen. Rhododendron, Sect. Pogonanthum
Synonyms: hidden
= Rhododendron anthopogon var. album Davidian; Quart. Bull. Amer. Rhododendron Soc. 34(4): 215 (1980)
= Rhododendron anthopogon var. haemonium (Balf.f. & R.E.Cooper) Cowan & Davidian; Rhododendron Year Book 2: 68 (1947)
= Rhododendron aromaticum Wall.; Numer. List [Wallich] no. 1520 (1829), nom. inval.
= Rhododendron haemonium Balf.f. & R.E.Cooper; Notes Roy. Bot. Gard. Edinburgh 9: 233 (1916)
subspecies :
subsp. hypenanthum
(Balf.f.) Cullen; Notes Roy. Bot. Gard. Edinburgh 37(2): 327 (1979)
Distribution: S- & SE-Tibet; Pakistan (Astor, Nanga Parbat, Baltistan, Gilgit); Nepal; Bhutan; N-India (Himachal Pradesh, Jammu & Kashmir, Uttarakhand, Sikkim)
36 TIB 40 BHU IND NEP PAK
Synonyms: hidden
= Rhododendron anthopogon var. hypenanthum (Balf.f.) H.Hara; Enum. Fl. Pl. Nepal 3: 56 (1982)
= Rhododendron hypenanthum Balf.f.; Not. Bot. Gard. Edinb. 291 (1916)
species :
Rhododendron anthopogonoides
Maxim.; Bull. Acad. Petersb. 23: 350 (1877)
Distribution: China (Gansu, Qinghai, NW-Sichuan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Pogonanthum
Synonyms: hidden
= Azalea anthopogonodes (Maxim.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
species :
Rhododendron anthosphaerum
Diels; Notes Roy. Bot. Gard. Edinburgh 5(25): 215 (1912)
Distribution: China (SW-Sichuan, NW-Yunnan); SE-Tibet; NE-Myanmar (Kachin)
36 CHI TIB 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Irrorata
Synonyms: hidden
= Rhododendron anthosphaerum subsp. hylothreptum (Balf.f. & W.W.Sm.) Tagg; Spec. Rhododendron 337 (1930)
= Rhododendron anthosphaerum var. eritimum (Balf.f. & W.W.Sm.) Davidian; Rhododendron Species, 2 (Ser. Arboreum-Lacteum): 261 (1989)
= Rhododendron chawchiense Balf.f. & Farrer; Notes Roy. Bot. Gard. Edinburgh 13: 247 (1922)
= Rhododendron eritimum Balf.f. & W.W.Sm.; Trans. Bot. Soc. Edinburgh 27(2): 190-192 (1917)
= Rhododendron eritimum subsp. chawchiense (Balf.f. & Farrer) Tagg; Spec. Rhododendron 343 (1930)
= Rhododendron eritimum subsp. gymnogynum (Balf.f. & Forrest) Tagg; Spec. Rhododendron 343 (1930)
= Rhododendron eritimum subsp. heptamerum (Balf.f.) Tagg; Spec. Rhododendron 343 (1930)
= Rhododendron eritimum subsp. persicinum (Hand.-Mazz.) Tagg; Spec. Rhododendron 343 (1930)
= Rhododendron gymnogynum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 47 (1920)
= Rhododendron heptamerum Balf.f.; Notes Roy. Bot. Gard. Edinburgh 13(61): 48 (1920)
= Rhododendron hylothreptum Balf.f. & W.W.Sm.; Trans. Bot. Soc. Edinburgh 27(2): 195-199 (1917)
= Rhododendron persicinum Hand.-Mazz.; Anz. Akad. Wiss. Wien, Math.-Naturwiss. Kl. 60: 97 (1924)
species :
Rhododendron anwheiense
E.H.Wilson; J. Arnold Arbor. 6(3): 163 (1925)
Distribution: China (Anhui, Zhejiang, Jiangxi, Hunan, Guangxi)
36 CHI
Synonyms: hidden
= Rhododendron maculiferum subsp. anhweiense (E.H.Wilson) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 36(1): 118 (1978)
species :
Rhododendron aperantum
Balf.f. & Kingdon-Ward; Notes Roy. Bot. Gard. Edinburgh 13: 231 (1922)
Distribution: China (NW-Yunnan); NE-Myanmar (Kachin)
36 CHI 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Neriiflora
species :
Rhododendron apiense
Argent; Folia Malaysiana 4(2): 102 (2003)
Distribution: Borneo (Sarawak)
42 BOR
species :
Rhododendron apoanum
Stein; Gartenflora (1885) 194. t. 1196
Distribution: Philippines (Mindanao)
42 PHI
Remarks: Subgen. Rhododendron
species :
Rhododendron apradae
U.Rai & Lama; Pleione 10(2): 371 (2016)
Distribution: India (Darjeeling)
40 IND
Remarks: status unconfirmed
species :
Rhododendron araiophyllum
Balf.f. & W.W.Sm.; Trans. Bot. Soc. Edinburgh 27(2): 184-187 (1917)
subspecies :
subsp. araiophyllum
Distribution: China (Yunnan); Myanmar (Kachin)
36 CHI 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Irrorata
subspecies :
subsp. lapidosum
(T.L.Ming) M.Y.Fang; Proc. Fourth Internat. Rhodod. Conf. 57 (1989), et Bull. Bot. Res. North-East. Forest. Inst. 12(3): 221 (1992), et Fl. Reipubl. Popularis Sin. 57(2): 133 (1995)
Distribution: China (NE-Yunnan)
36 CHI
Synonyms: hidden
= Rhododendron lapidosum T.L.Ming; Acta Bot. Yunnan. 3(1): 113-115, f. 1, 1-5 (1981)
species :
Rhododendron arborescens
(Pursh) Torr.; Fl. N. Middle U. St. 1: 425 (1824)
Name: Smooth azalea
Distribution: USA (Alabama, Georgia, Kentucky, Maryland, Mississippi, North Carolina, New York, Pennsylvania, South Carolina, Tennessee, Virginia, West Virginia)
75 USA 78 USA
Remarks: Subgen. Pentanthera, Sect. Pentanthera
Synonyms: hidden
= Azalea arborea Barton ex Pursh; Fl. Amer. Sept. 1: 153 (1813), nom. illeg.
= Azalea arborescens Pursh; Fl. Am. Sept. 1: 153 (1813)
= Azalea arborescens var. richardsonii Ashe; J. Elisha Mitchell Sci. Soc. 38: 91 (1922)
= Azalea fragrans Raf.; Ann. Nat. 1: 12 (1820), nom. illeg.
= Azalea verticillata Lodd. ex Bosse; Vollst. Handb. Bl.-gärtn. 1: 240 (1829)
= Rhododendron arborescens f. flavescens Rehder; J. Arnold Arbor. 7: 244 (1926)
= Rhododendron arborescens f. rubescens Rehder; J. Arnold Arbor. 7: 244 (1926)
= Rhododendron arborescens var. richardsonii Rehder; Wils. & Rehd., Monogr. Azaleas 168 (1921)
species :
Rhododendron arboreum
Sm.; Exot. Bot. 1: 9, t. 6 (1805)
subspecies :
subsp. arboreum
Distribution: China (W-Guizhou); S-Tibet; Pakistan (Swat, Hazara, Murree); Nepal; Bhutan; N-India (Arunachal Pradesh, Himachal Pradesh, Jammu & Kashmir, Manipur, Meghalaya, Mizoram, Nagaland, Sikkim, Uttarakhand, West Bengal); Myanmar (Chin, Kachin, Mandalay, Mon, Shan)
36 CHI TIB 40 BHU IND NEP PAK 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Arborea
Synonyms: hidden
= Azalea arborea (Sm.) Kuntze; Revis. Gen. Pl. 2: 386 (1891), nom. illeg.
= Rhododendron arboreum subsp. windsorii (Nutt.) Tagg; Stevenson, Spec. Rhododendron 16 (1930)
= Rhododendron arboreum var. niveum Van Houtte; Hort. Belge 1: 241 (1833)
= Rhododendron cordifolium Dehnh.; Cat. Horti Camald., ed. 2: 23 (1832)
= Rhododendron gloxiniflorum Millais; Rhododendrons, 174 (1917)
= Rhododendron nepalense Voss; Vilm. Blumengärtn. ed. 3. 1: 583 (1894), pro syn.
= Rhododendron puniceum Roxb.; Fl. Ind. [Roxburgh] 2: 409 (1832)
= Rhododendron rollissonii Lindl.; Edwards´s Bot. Reg. 29: t. 25 (1843)
= Rhododendron undulatum Steud.; Nomencl. Bot. [Steudel], ed. 2, 2: 451 (1841), nom. inval.
= Rhododendron venustum Salisb.; Prodr. Stirp. Chap. Allerton 287 (1796), nom. superfl.
= Rhododendron windsorii Nutt.; Hooker´s J. Bot. Kew Gard. Misc. 5: 357 (1853)
= Stemotis coccineum Raf.; Sylva Tellur. 153 (1838)
= Stemotis roseum Raf.; Sylva Tellur. 153 (1838)
subspecies :
subsp. albotomentosum
(Davidian) D.F.Chamb.; R. H. S. Rhododendron Handb. 1998: 350 (1998)
Distribution: Myanmar
41 MYA
Synonyms: hidden
= Rhododendron delavayi var. albotomentosum Davidian; Rhododendron Species, 2 (Ser. Arboreum-Lacteum): 308, 75 (1989)
subspecies :
subsp. cinnamomeum
(Wall. ex Lindl.) Tagg; Spec. Rhododendron 15 (1930)
Distribution: S-Tibet; W-Nepal; India (Sikkim, West Bengal - Darjeeling); Vietnam
36 TIB 40 IND NEP 41 VIE
Synonyms: hidden
= Rhododendron arboreum subsp. campbelliae (Hook.f.) Tagg; Spec. Rhododendron 15 (1930)
= Rhododendron arboreum var. cinnamomeum (Wall. ex G.Don) Lindl.; Edwards´s Bot. Reg. 23: t. 1982 (1837)
= Rhododendron campbelliae Hook.f.; Rhododendron Sikkim Himalaya pl. 6 (1849)
= Rhododendron cinnamomeum Wall. ex G.Don; Gen. Hist. 3: 844 (1834)
= Rhododendron shingbae C.S.Purohit & Ram.Kumar; Rhododendron (Melbourne) 58: 79 (2018)
variant :
var. roseum
Lindl.; Bot. Reg. 15: pl. 1240 (1829)
Distribution: SE-Tibet; W-Nepal; Bhutan; NE-India (Arunachal Pradesh, Sikkim West Bengal - Darjeeling)
36 TIB 40 BHU IND NEP
Synonyms: hidden
= Rhododendron album Buch.-Ham. ex D.Don; Prodr. Fl. Nepal. 154 (1825), nom. inval.
= Rhododendron arboreum f. album (Wall.) Tagg; Stevenson, Spec. Rhododendron 16 (1930)
= Rhododendron arboreum var. album (Wall.) D.Bhattach.; M. Sanjappa & Sastry Fasc. Fl. India 25. 91 (2014)
= Rhododendron arboreum var. album Wall.; Pl. Asiat. Rar. [Wallich] 2: 23, pl. 123 (1830)
= Rhododendron arboreum var. roseum (Lindl.) W.K.Hu; Bull. Bot. Res., Harbin 8(3): 59 (1988)
= Rhododendron morsheadianum Millais; Rhododendrons, Ser. 2: 189 (1924)
subspecies :
subsp. nilagiricum
(Zenker) Tagg; Spec. Rhododendron 15 (1930)
Distribution: India (Karnataka, Kerala, Tamil Nadu)
40 IND
Synonyms: hidden
= Rhododendron nilagiricum Zenker; Ann. Sci. Nat., Bot., Sér. 2, 6: 150
= Rhododendron arboreum var. nilagirica (Zenker) C.B.Clarke; Fl. Brit. India [J. D. Hooker] 3: 466 (1882)
subspecies :
subsp. zeylanicum
(Booth) Tagg; Species of Rhododendron 16 (1930)
Distribution: Sri Lanka
40 SRL
Synonyms: hidden
= Rhododendron zeylanicum T.J.Booth; Gard. Chron. 1850: 150 (1850)
species :
Rhododendron archboldianum
Sleumer; Reinwardtia 5: 121 (1960)
Distribution: New Guinea (Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron ardii
Hutabarat, Mambrasar & Mustaqim; Taiwania 67(1): 120 (2022)
Distribution: Sulawesi
42 SUL
species :
Rhododendron arenicolum
Sleumer; Reinwardtia 5: 113 (1960)
Distribution: SW-Sulawesi
42 SUL
Remarks: Subgen. Rhododendron
species :
Rhododendron arfakianum
Becc.; Malesia 1: 201 (1878)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron undulaticalyx J.J.Sm.; Gibbs, Phytogeogr. & Fl. Arfak Mts. 168 (1917)
species :
Rhododendron argipeplum
Balf.f. & R.E.Cooper; Notes Roy. Bot. Gard. Edinburgh 9(44-45): 213-214 (1916)
Distribution: S-Tibet; Bhutan; N-India (Arunachal Pradesh, Sikkim)
36 TIB 40 BHU IND
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Barbata
Synonyms: hidden
= Rhododendron barbatum var. smithii C.B.Clarke; Hook.f., Fl. Brit. India [J. D. Hooker] 3: 469 (1882)
= Rhododendron macrosmithii Davidian; Rhododendron Species, 2 (Ser. Arboreum-Lacteum): 113 (1989) (nom. nov. superfl.)
= Rhododendron smithii Nutt. ex Hook.; Bot. Mag. 85: t. 5120 (1859) (not Sweet (1830)
species :
Rhododendron argyrophyllum
Franch.; Bull. Soc. Bot. Fr. 33: 231 (1886); et in Nouv. Arch. Mus. Paris, Ser. 2, 10: 48 (1887 publ. 1888)
subspecies :
subsp. argyrophyllum
Distribution: China (SW-Sichuan, NW-Guizhou, NE-Yunnan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Argyrophylla
Synonyms: hidden
= Rhododendron argyrophyllum var. cupulare Rehder & E.H.Wilson; Pl. Wilson. [Sargent] 1(3): 526-527 (1913)
= Rhododendron chionophyllum Diels; Bot. Jahrb. Syst. 29(3-4): 512 (1900)
variant :
var. glabriovarium
M.Y.He; Acta Phytotax. Sin. 35(1): 66, f. 2 (1997)
Distribution: China (Sichuan)
36 CHI
subspecies :
subsp. nankingense
(Cowan) Chamb.; Notes Roy. Bot. Gard. Edinburgh 37(2): 329 (1979)
Distribution: China (S-Sichuan, E-Guizhou)
36 CHI
Synonyms: hidden
= Rhododendron argyrophyllum var. leiandrum Hutch.; Bot. Mag. 144: t. 8767 (1918)
= Rhododendron argyrophyllum var. nankingense Cowan; Notes Roy. Bot. Gard. Edinburgh 21(3): 148 (1953)
subspecies :
subsp. omeiense
(Rehder & E.H.Wilson) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 37(2): 329 (1979)
Distribution: China (W-Sichuan)
36 CHI
Synonyms: hidden
= Rhododendron argyrophyllum var. omeiense Rehder & E.H.Wilson; Pl. Wilson. [Sargent] 1(3): 527 (1913)
species :
Rhododendron arizelum
Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 12(57-58): 90-93 (1920)
Distribution: China (NW-Yunnan); SE-Tibet; India (Arunachal Pradesh); N-Myanmar (Kachin)
36 CHI TIB 40 IND 41 MYA
Synonyms: hidden
= Rhododendron arizelum var. rubicosum Cowan & Davidian; Rhododendron Year book 8: 79 (1953)
= Rhododendron rex subsp. arizelum (Balf.f. & Forrest) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 37(2): 330 (1979)
species :
Rhododendron armitii
F.M.Bailey; Dept. Agric. Brisbane Bot. Bull. 10: 39 (1895)
Distribution: New Guinea (Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron arunachalense
D.F.Chamb. & Rae; Edinburgh J. Bot. 47(2): 197 (1990)
Distribution: NE-India (Arunachal Pradesh)
40 IND
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
species :
Rhododendron asperrimum
Sleumer; Blumea 12: 97 (1963)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron asperulum
Hutch. & Kingdon-Ward; Hutch. in Notes Bot. Gard. Edinb. 16: 182 (1931), latine
Distribution: China (Yunnan); Tibet; Myanmar (Chin, Kachin, Sagaing)
36 CHI TIB 41 MYA
Synonyms: hidden
= Rhododendron asperulum Kingdon-Ward; Gard. Chron., Ser. 3, 81: 251 (1927)
species :
Rhododendron asperum
J.J.Sm.; Nova Guinea 12: 137 (1914)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron asterochnoum
Diels; Repert. Spec. Nov. Regni Veg. 17(486-491): 196 (1921)
Distribution: China (W-Sichuan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Fortunea
variant :
var. brevipedicellatum
W.K.Hu; Bull. Bot. Res., Harbin 8(3): 57, pl. 7 (1988)
Distribution: China (NW-Sichuan)
36 CHI
species :
Rhododendron astrophorum
M.N.Tamayo, Y.P.Ang & A.S.Rob.; Edinburgh J. Bot. 80-1979: 2, f. 1-3, 4A (2023)
Distribution: Palawan
42 PLW
species :
Rhododendron atjehense
Sleumer; Blumea, Suppl. 4, 53 (1958), in clavi, sine descr. lat.; et in Reinwardtiav. 226 (1960)
Distribution: N-Sumatra
42 SUM
Remarks: Subgen. Hymenanthes
species :
Rhododendron atlanticum
(Ashe) Rehder; Wilson & Rehder, Monogr. Azaleas, 147 (1921)
Name: Dwarf azalea
Distribution: USA (District of Columbia, Delaware, Georgia, Maryland, North Carolina, New Jersey, Pennsylvania, South Carolina, Virginia)
75 USA 78 USA
Remarks: Subgen. Pentanthera, Sect. Pentanthera
Synonyms: hidden
= Azalea atlantica Ashe; Bull. Charlest. Mus. xiii. 26 (1917)
= Azalea atlantica var. luteoalba Coker; J. Elisha Mitchell Sci. Soc. 36: 98 (1920)
= Azalea neglecta Ashe; Bull. Torrey Bot. Club 47: 581 (1920)
= Rhododendron atlanticum f. confusum Fernald; Rhodora 43: 622 (1941)
= Rhododendron atlanticum f. luteoalbum (Coker) Fernald; Rhodora 43: 622 (1941)
= Rhododendron atlanticum f. neglectum (Ashe) Rehder; Wils. & Rehd., Monogr. Azaleas 149 (1921)
= Rhododendron atlanticum f. tomolobum Fernald; Rhodora 43: 622 (1941)
= Rhododendron atlanticum var. luteoalbum (Coker) Rehder; Wils. & Rehd., Monogr. Azaleas 150 (1921)
= Rhododendron neglectum (Ashe) Ashe; Rhodora 23: 179 (1921)
species :
Rhododendron atrichum
Argent; J. Amer. Rhododendron Soc. 63(3): 160 (2009), nom. nov.
subspecies :
subsp. atrichum
Distribution: Borneo (Sarawak)
42 BOR
Synonyms: hidden
= Rhododendron epilosum Argent; Rhododendrons Camellias Magnolias 60: 86 (2009), homonym
subspecies :
subsp. dendrolepis
(Argent) Argent; J. Amer. Rhododendron Soc. 63(3): 161 (2009)
Distribution: Borneo (Sarawak)
42 BOR
Synonyms: hidden
= Rhododendron epilosum subsp. dendrolepis Argent; Rhododendrons Camellias Magnolias 60: 86 (2009)
species :
Rhododendron atropunicum
H.P.Yang; Acta Bot. Yunnan. 10(3): 367 (1988)
Distribution: China (SW-Sichuan)
36 CHI
species :
Rhododendron atropurpureum
Sleumer; Reinwardtia 5: 172 (1960)
Distribution: New Guinea (Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron atrovirens
Franch.; Bull. Soc. Bot. France 33: 235 (1886)
Distribution: China (Sichuan, Yunnan)
36 CHI
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
Synonyms: hidden
= Azalea atrovirens (Franch.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
species :
Rhododendron augustinii
Hemsl.; J. Linn. Soc., Bot. 26: 19 (1890)
subspecies :
subsp. augustinii
Distribution: China (W-Hubei, NE-Sichuan, W-Sichuan, S-Shaanxi)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Triflora
Synonyms: hidden
= Azalea augustinii (Hemsl.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron augustinii f. album E.H.Wilson; J. Arnold Arbor. 5: 101 (1924)
= Rhododendron augustinii var. yui W.P.Fang; Contr. Biol. Lab. Sci. Soc. China, Bot. Ser. 12: 78 (1939)
= Rhododendron vilmorinianum Balf.f.; Notes Roy. Bot. Gard. Edinburgh 12: 181 (1920)
subspecies :
subsp. chasmanthum
(Diels) Cullen; Notes Roy. Bot. Gard. Edinburgh 36(1): 109 (1978)
Distribution: China (Gansu, Sichuan, Yunnan); ?Tibet
36 CHI
Synonyms: hidden
= Rhododendron augustinii f. grandifolum Franch.; J. Bot. [Morot] 12: 261 (1898)
= Rhododendron augustinii f. hardyi (Davidian) R.C.Fang; Acta Bot. Yunnan. 4(3): 255 (1982)
= Rhododendron augustinii f. rubrum (Davidian) R.C.Fang; Acta Bot. Yunnan. 4(3): 255 (1982)
= Rhododendron augustinii f. subglabrum Franch.; J. Bot. [Morot] 12: 261 (1898)
= Rhododendron augustinii subsp. hardyi (Davidian) Cullen; Notes Roy. Bot. Gard. Edinburgh 36(1): 109 (1978)
= Rhododendron augustinii subsp. rubrum (Davidian) Cullen; Notes Roy. Bot. Gard. Edinburgh 36(1): 109 (1978)
= Rhododendron augustinii var. chasmanthum (Diels) R.C.Fang; Rhododendron Camellia Year Book 17: 164 (1963)
= Rhododendron augustinii var. rubrum Davidian; Rhododendron Camellia Year Book 17: 165 (1963)
= Rhododendron bergii Davidian; Quart. Bull. Amer. Rhododendron Soc. 30(4): 210 (1976)
= Rhododendron chasmanthoides Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13: 246 (1922)
= Rhododendron chasmanthum Diels; Notes Roy. Bot. Gard. Edinburgh 5: 212 (1912)
= Rhododendron hardyi Davidian; Rhododendrons 1974. Magnolias. Camellias 46 (1974)
= Rhododendron hirsuticostatum Hand.-Mazz.; Anz. Akad. Wiss. Wien, Math.-Naturwiss. Kl. 57: 287 (1920)
species :
Rhododendron aureodorsale
(W.P.Fang ex J.Q.Fu) Y.P.Ma & J.Nielsen; Nordic J. Bot. 30(2): 184 (2012)
Distribution: China (S-Shaanxi)
36 CHI
Synonyms: hidden
= Rhododendron clementinae subsp. aureodorsale W.P.Fang; Fl. Tsinling. 1(4): 20, 393 (1983)
species :
Rhododendron aureum
Georgi; Reise Russ. Reich. 1: 51, 214 (1775)
subspecies :
subsp. aureum
Distribution: Siberia (Altai, Buryatia, Chita, Irkutsk, Krasnoyarsk, Tuva, W-Siberia, Yakutia); Russian Far East (Amur, Kamchatka, Khabarovsk, Kuril Isl., Magadan, Primorye, Sakhalin); China (SE-Jilin, Liaoning); Mongolia; North Korea; South Korea; Japan (Hokkaido, Honshu)
30 SIB 31 RFE 36 CHI 37 MON 38 JAP KOR NKO
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Pontica
Synonyms: hidden
= Azalea chrysantha (Pall.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron aureum f. senanense (Yabe) H.Hara; Enum. Spermatophytarum Japon. 1: 28 (1948)
= Rhododendron chrysanthum Pall.; Reise Durch Verschiedne Provinz. 3: 729 (1776)
= Rhododendron flavum Pall.; Reise Russ. Reich. 3: 320 (1776)
= Rhododendron officinale Salisb.; Parad. Lond. t. 80 (1807)
subspecies :
subsp. hypopitys
(Pojark.) Vorosch.; Florist. Issl. Razn. Raionakh S.S.S.R. [A.K.Skvortsov] 185 (1985)
Distribution: Russian Far East (Khabarovsk, Primorye)
31 RFE
Synonyms: hidden
= Rhododendron aureum var. hypopitys (Pojark.) Chamb.; Notes Roy. Bot. Gard. Edinburgh 37(2): 335 (1979)
= Rhododendron hypopitys Pojark.; Fl. URSS 18: 72 (1952)
species :
Rhododendron auriculatum
Hemsl.; J. Linn. Soc., Bot. 26(173): 20 (1889)
Distribution: China (S-Shaanxi, E-Sichuan, W-Hubei, N-Guizhou)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Auriculata
Synonyms: hidden
= Azalea auriculata (Hemsl.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
species :
Rhododendron aurigeranum
Sleumer; Reinwardtia 5: 214 (1960)
subspecies :
subsp. aurigeranum
Distribution: New Guinea (Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
subspecies :
subsp. hirsutum
Argent; Folia Malaysiana 4(2): 120 (2003)
Distribution: New Guinea (Papua New Guinea)
42 NWG
species :
Rhododendron auritum
Tagg; Rhododendron Soc. Notes, 1929-31 3: No. 5, 278 (1932); et in Notes Bot. Gard. Edinb. 18: 218 (1934), latine
Distribution: SE-Tibet
36 TIB
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Tephropepla
species :
Rhododendron austrinum
(Small) Rehder; Stand. Cycl. Hort. 3571 (1917)
Name: Orange azalea
Distribution: USA (Alabama, Florida, Georgia, Mississippi)
78 USA
Remarks: Subgen. Pentanthera, Sect. Pentanthera
Synonyms: hidden
= Azalea austrina Small; Fl. S.E. U.S. [Small] ed. 2, 1356 (1913)
species :
Rhododendron awatosaense
Minamit. & Yonek.; J. Jap. Bot. 93(2): 93 (2018)
Distribution: Japan
38 JAP
variant :
var. miyabiense
Minamit.; J. Jap. Bot. 93(2): 95 (2018)
Distribution: Japan
38 JAP
variant :
var. sizukaobarae
Minamit.; J. Jap. Bot. 93(2): 95 (2018)
Distribution: Japan
38 JAP
species :
Rhododendron bachii
H.Lév.; Repert. Spec. Nov. Regni Veg. 12(312-316): 102-103 (1913)
Distribution: China (Anhui, Guangdong, Guangxi, Guizhou, Hubei, Hunan, Jiangxi, Sichuan, Zhejiang)
36 CHI
Remarks: Subgen. Azaleastrum, Sect. Azaleastrum
Synonyms: hidden
= Rhododendron hangzhouense W.P.Fang & M.Y.He; Bull. Bot. Res., Harbin 2(2): 81-82, pl. 1 (1982)
= Rhododendron sanidodeum P.C.Tam; Guihaia 3(3): 182-183, f. 4 (1983)
species :
Rhododendron baconii
Argent, A.Lamb & Phillipps; Notes Roy. Bot. Gard. Edinburgh 42(1): 115 (1984)
Distribution: Borneo (Sabah)
42 BOR
species :
Rhododendron baenitzianum
Lauterb.; K. Schum. & Lauterb. Nachtr. Fl. Deutsch. Südsee, 337 (1905)
Distribution: New Guinea (Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron maboroense Schltr.; Bot. Jahrb. Syst. 55: 156 (1918)
variant :
var. oktediense
Argent; Rhododendrons subgen. Vireya, ed. 2. 380 (2015)
Distribution: New Guinea (Papua New Guinea)
42 NWG
species :
Rhododendron bagobonum
H.F.Copel.; Philipp. J. Sci. 40: 136, 151 (1929)
Distribution: Palawan; Philippines (Mindanao, Camiguin)
42 PHI PLW
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron cuneifolium var. subspathulatum Ridl.; J. Straits Branch Roy. Asiat. Soc. 33: 23 (1900)
= Rhododendron galioides J.J.Sm.; Bull. Jard. Bot. Buitenz., Ser. 3, 13: 445 (1935)
species :
Rhododendron baihuaense
Y.P.Ma; Phytotaxa 114(1): 47 (2013)
Distribution: China (Yunnan)
36 CHI
species :
Rhododendron baileyi
Balf.f.; Notes Roy. Bot. Gard. Edinburgh 11: 23 (1919)
Distribution: S- & SE-Tibet; Bhutan; India (Sikkim)
36 TIB 40 BHU IND
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Baileya
Synonyms: hidden
= Rhododendron thyodocum Balf.f. & Cooper; Notes Roy. Bot. Gard. Edinburgh 11: 118 (1919)
species :
Rhododendron bailiense
Y.P.Ma, C.Q.Zhang & D.F.Chamb.; Phytotaxa 195(2): 197 (2015)
Distribution: China (Guizhou)
36 CHI
species :
Rhododendron bainaense
Xiang Chen & C.H.Yang; J. Trop. Subtrop. Bot. 20(5): 513 (2012)
Distribution: China (Guizhou)
36 CHI
species :
Rhododendron bainbridgeanum
Tagg & Forrest; Stevenson, Spec. Rhododendron 133 (1930)
Distribution: China (NW-Yunnan); SE-Tibet; Myanmar (Kachin)
36 CHI TIB 41 MYA
Remarks: Subgen. Hymenanthes
species :
Rhododendron balangense
W.P.Fang; Acta Phytotax. Sin. 21(4): 468, pl. 2, f. 1 (1983)
Distribution: China (W-Sichuan)
36 CHI
species :
Rhododendron balfourianum
Diels; Notes Roy. Bot. Gard. Edinburgh 5(25): 214 (1912)
Distribution: China (SW-Sichuan, W-Yunnan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Taliensia
variant :
var. aganniphoides
Tagg & Forrest; Notes Roy. Bot. Gard. Edinburgh 15(75): 306-307 (1927)
Distribution: China (SW-Sichuan, NW-Yunnan)
36 CHI
species :
Rhododendron bamaense
Z.J.Zhao; Fl. Lign. Qinghaica, Add. 4 (1987)
Distribution: China (SE-Qinghai)
36 CHI
species :
Rhododendron banghamiorum
(J.J.Sm.) Sleumer; Reinwardtia 5: 163 (1960)
Distribution: N-Sumatra
42 SUM
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron pubigermen var. banghamiorum J.J.Sm.; Contr. Arnold Arbor. 8: 123 (1934)
species :
Rhododendron barbatum
Wall. ex G.Don; Gen. Hist. 3: 844 (1834)
Distribution: S-Tibet; Nepal; Bhutan; India (Arunachal Pradesh, Sikkim, Uttarakhand, West Bengal)
36 TIB 40 BHU IND NEP
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Barbata
Synonyms: hidden
= Azalea barbata (Wall. ex G.Don) Kuntze; Revis. Gen. Pl. 2: 386 (1891)
= Rhododendron aristatum Royle; Illustr. Bot. Himal. 42 (1836), nomen
= Rhododendron barbatum f. imberbe (Hutch.) H.Hara; Enum. Fl. Pl. Nepal 3: 57 (1982)
= Rhododendron imberbe Hutch.; Gard. Chron., Ser. 3, 83: 212 (1928)
= Rhododendron lancifolium Hook.f.; Rhododendr. Sikkim-Himalaya 1: t. 4 (1849), nom. illeg.
species :
Rhododendron barkamense
D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 39(2): 363, 478 (1982)
Distribution: China (NW-Sichuan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Taliensia
species :
Rhododendron basilicum
Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 9(44-45): 214-215 (1916)
Distribution: China (NW-Yunnan); Myanmar (Kachin)
36 CHI 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Falconera
Synonyms: hidden
= Rhododendron megaphyllum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 12(57-58): 138-140 (1920)
= Rhododendron regale Balf.f. & Kingdon-Ward; Notes Roy. Bot. Gard. Edinburgh 12(57-58): 156-159 (1920)
species :
Rhododendron beanianum
Cowan; New Flora & Silva 10: 246 (1938)
Distribution: SE-Tibet; NE-India (Arunachal Pradesh); NE-Myanmar (Kachin)
36 TIB 40 IND 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Neriiflora
species :
Rhododendron beccarii
Sleumer; Reinwardtia 5: 192 (1960)
Distribution: Sumatra
42 SUM
Remarks: Subgen. Rhododendron
species :
Rhododendron beesianum
Diels; Notes Roy. Bot. Gard. Edinburgh 5(25): 214-215 (1912)
Distribution: China (SW-Sichuan, NW-Yunnan); SE-Tibet; NE-Myanmar (Kachin)
36 CHI TIB 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Taliensia
Synonyms: hidden
= Rhododendron colletum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 11(52-53): 39-42 (1919)
= Rhododendron emaculatum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 42 (1920)
species :
Rhododendron bellissimum
D.F.Chamb.; Flora of China 14: 313 (2005) nom. nov.
Distribution: China (C-Sichuan)
36 CHI
Synonyms: hidden
= Rhododendron bellum H.P.Yang; Bull. Bot. Res. North-East. Forest. Inst. 9(1): 18 (1989) (not R. bellum W. P. Fang & G. Z. Li 1984)
species :
Rhododendron benhallii
Craven; Blumea 56(1): 34 (2011)
Distribution: Japan (Honshu, Shikoku)
38 JAP
Synonyms: hidden
= Andromeda ciliicalyx Miq.; Ann. Mus. Bot. Lugduno-Batavi 1: 30 (1863)
= Menziesia ciliicalyx (Miq.) Maxim.; Mém. Acad. Petersb., Ser. VII. 16: no. 9: 10 (1871)
= Menziesia ciliicalyx var. akiensis Hiyama; J. Jap. Bot. 39(4): 127 (1964)
= Menziesia tubiflora Koidz.; Bot. Mag. (Tokyo) 37: 37 (1923)
species :
Rhododendron benomense
Rafidah & A.C.Elliott; Edinburgh J. Bot. 79-413: 2 (2022), nom. nov.
Distribution: peninsular Malaysia (once from summit of Gunung Benom, Pahang)
42 MLY
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron obscurum Sleumer; Reinwardtia 5: 104 (1960), non Franch. ex Balf. (1922)
species :
Rhododendron beyerinckianum
Koord.; Lorentz, Nova Guinea. 8: 876 (1912)
Distribution: New Guinea (Irian Jaya, Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron beyerinckianum var. longipetiolatum J.J.Sm.; Nova Guinea 18: 94 (1936)
= Rhododendron chrysopeplon Sleumer; Bot. Jahrb. Syst. 74: 540 (1949), in adnot.
= Rhododendron dasylepis Schltr.; Bot. Jahrb. Syst. 55: 153 (1918)
= Rhododendron saavedranum Diels; Bot. Jahrb. Syst. 62: 486 (1929)
= Rhododendron schultzei Schltr.; Bot. Jahrb. Syst. 55: 154 (1918)
species :
Rhododendron bhutanense
D.G.Long & Bowes Lyon; Notes Roy. Bot. Gard. Edinburgh 45(2): 327 (1988 publ. 1989)
Distribution: Bhutan
40 BHU
species :
Rhododendron biappendiculatum
Craven; J. Adelaide Bot. Gard. 27(4): 29 (2014), nom. nov.
Distribution: Sulawesi
42 SUL
Synonyms: hidden
= Rhododendron seranicum subsp. sparsihirtum Argent; Rhododendrons Camellias Magnolias 127 (2013)
species :
Rhododendron bijiangense
T.L.Ming; Acta Bot. Yunnan. 3(1): 116-118, f. 2, 6-8 (1981)
Distribution: China (W-Yunnan)
36 CHI
species :
Rhododendron bivelatum
Balf.f.; Notes Roy. Bot. Gard. Edinburgh 10: 85 (1917)
Distribution: China (NE-Yunnan)
36 CHI
species :
Rhododendron blackii
Sleumer; Blumea 21(2): 375 (1973)
Distribution: New Guinea (Papua New Guinea)
42 NWG
Synonyms: hidden
= Rhododendron sleumeri Gilli; Ann. Naturhist. Mus. Wien 83: 435 (1979 publ. 1980)
species :
Rhododendron bloembergenii
Sleumer; Reinwardtia 5: 204 (1960)
Distribution: Sulawesi
42 SUL
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron rhodopus Sleumer; Reinwardtia 5: 199 (1960)
species :
Rhododendron boninense
Nakai; Bot. Mag. (Tokyo) 34: 324 (1920)
Distribution: Bonin Isl. (Chichijima)
38 OGA
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
species :
Rhododendron bonvalotii
Franch.; J. Bot. [Morot] 5: 94 (1891)
Distribution: China (SW-Sichuan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Thomsonia
species :
Rhododendron boothii
Nutt.; Hooker´s J. Bot. Kew Gard. Misc. 5: 356 (1853)
Distribution: SE-Tibet; NE-India (Arunachal Pfädesh)
36 TIB 40 IND
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Boothia
Synonyms: hidden
= Azalea boothii (Nutt.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron mishmiense Hutch. & Kingdon-Ward; Spec. Rhododendron, 166 (1930), et Notes Bot. Gard. Edinb. 16: 173 (1931), latine
species :
Rhododendron borneense
(J.J.Sm.) Argent, A.Lamb & Phillipps; Notes Roy. Bot. Gard. Edinburgh 42(1): 118 (1984)
subspecies :
subsp. borneense
Distribution: Borneo
42 BOR
Synonyms: hidden
= Rhododendron quadrasianum var. borneense J.J.Sm.; Bull. Jard. Bot. Buitenzorg, Sér. 3, 13: 444 (1935)
subspecies :
subsp. angustissimum
(Sleumer) Argent; Edinburgh J. Bot. 52(3): 363 (1995)
Distribution: Borneo
42 BOR
Synonyms: hidden
= Rhododendron quadrasianum var. angustissimum Sleumer; Blumea 12: 92 (1963)
= Rhododendron quadrasianum subsp. angustissimum (Sleumer) Argent; Bot. J. Linn. Soc. 85(1): 16 (1982)
subspecies :
subsp. villosum
(J.J.Sm.) Argent, A.Lamb & Phillipps; Notes Roy. Bot. Gard. Edinburgh 42(1): 118 (1984)
Distribution: Borneo
42 BOR
Synonyms: hidden
= Rhododendron quadrasianum var. villosum J.J.Sm.; Bull. Jard. Bot. Buitenzorg, Sér. 3, 13: 444 (1935)
species :
Rhododendron brachyantherum
Warb. ex P.Sarasin & Sarasin; Reis. Celebes 2: 329 (1905)
Distribution: Sulawesi
42 SUL
species :
Rhododendron brachyanthum
Franch.; Bull. Soc. Bot. Fr. 33: 234 (1886)
subspecies :
subsp. brachyanthum
Distribution: China (C-Yunnan, W-Yunnan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Glauca
Synonyms: hidden
= Azalea brachyantha (Franch.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
subspecies :
subsp. hypolepidotum
(Balf.f. & Forrest) Cullen; Notes Roy. Bot. Gard. Edinburgh 36(1): 114 (1978)
Distribution: China (NW-Yunnan, W-Yunnan, C-Yunnan); SE-Tibet; NE-Myanmar (Kachin)
36 CHI TIB 41 MYA
Synonyms: hidden
= Rhododendron brachyanthum var. hypolepidotum Franch.; J. Bot. [Morot] 12: 262 (1898)
= Rhododendron hypolepidotum (Franch.) Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13: 266 (1922)
species :
Rhododendron brachycarpum
D.Don ex G.Don; Gen. Hist. 3: 843 (1834)
subspecies :
subsp. brachycarpum
Distribution: Russian Far East (Kuril Isl.); North Korea; South Korea; Japan (Hokkaido, Honshu, Shikoku)
31 RFE 38 JAP KOR NKO
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Pontica
Synonyms: hidden
= Azalea brachycarpa (D.Don ex G.Don) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron brachycarpum f. nemotoanum (Makino) H.Hara; Enum. Spermatophytarum Japon. 1: 31 (1948)
= Rhododendron brachycarpum subsp. tigerstedtii Nitz. ex D.H.Voss; J. Amer. Rhododendron Soc. 55: 157 (2001)
= Rhododendron brachycarpum var. roseum Koidz.; Bot. Mag. (Tokyo) 30: 77 (1916)
= Rhododendron brachycarpum var. rosiflorum Miyoshi; J. Coll. Sci. Imp. Univ. Tokyo 27(11): 8 (1910)
= Rhododendron brachycarpum var. rufescens Nakai; Nakai & G. Koidz., Trees Shrubs Japan, rev. ed. 56 (1927)
= Rhododendron brachycarpum var. tigerstedtii (Nitz.) Davidian; Rhododendron Species, 3 (Ser. Neriiflorum-Thomsonii, etc.): 157 (1992)
= Rhododendron fauriei var. roseum (Koidz.); Trees Shrubs Japan 1: 48 (1922)
= Rhododendron fauriei var. rufescens Nakai; Trees Shrubs Japan, Revis. Ed. 1: 56 (1927)
subspecies :
subsp. fauriei
(Franch.) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 37(2): 335 (1979)
Distribution: Russian Far East (Primorye); Japan
31 RFE 38 JAP
Synonyms: hidden
= Rhododendron brachycarpum f. fauriei (Franch.) Murata; Acta Phytotax. Geobot. 38: 56 (1987)
= Rhododendron brachycarpum var. lutescens Koidz.; Bot. Mag. (Tokyo) 30: 77 (1916)
= Rhododendron fauriei Franch.; Bull. Annuel Soc. Philom. Paris, Sér. 7, 10: 145 (1886)
species :
Rhododendron brachygynum
H.F.Copel.; Philipp. J. Sci. 40: 137, 165 (1929)
Distribution: Philippines (Cebu)
42 PHI
Remarks: Subgen. Rhododendron
species :
Rhododendron brachypodarium
Sleumer; Blumea 12: 103 (1963)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron brachypodum
W.P.Fang & P.S.Liu; Bull. Bot. Res. North-East. Forest. Inst. 2(2): 92 (1982)
Distribution: China (Sichuan)
36 CHI
species :
Rhododendron bracteatum
Rehder & E.H.Wilson; Sarg., Pl. Wilson. [Sargent] 1: 519 (1913)
Distribution: China (NW-Sichuan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Heliolepida
species :
Rhododendron brassii
Sleumer; Reinwardtia 5: 170 (1960)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron brentelii
Argent; Rhododendrons subgen. Vireya, ed. 2. 258 (2015)
Distribution: New Guinea (Irian Jaya)
42 NWG
species :
Rhododendron brevicaudatum
R.C.Fang & S.S.Chang; Acta Bot. Yunnan. 10(3): 369 (1988)
Distribution: China (E-Guizhou)
36 CHI
species :
Rhododendron brevinerve
Chun & W.P.Fang; Acta Phytotax. Sin. 6(2): 167-168, pl. 39, f. 2 (1957)
Distribution: China (N-Guangdong, N-Guangxi, SW-Hunan, SE-Guizhou)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Irrorata
species :
Rhododendron breviperulatum
Hayata; Icon. Pl. Formosan. 3: 129-130 (1913)
Distribution: Taiwan
38 TAI
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
Synonyms: hidden
= Rhododendron rubropilosum var. breviperulatum (Hayata) T.Yamaz.; Rev. Gen. Rhododendron Japan, Taiwan, Korea & Sakhalin 35 (1996)
species :
Rhododendron brevipes
Sleumer; Reinwardtia 5: 213 (1960)
Distribution: New Guinea (Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron brevipetiolatum
M.Y.Fang; Acta Phytotax. Sin. 22(5): 420-421, f. 1 (1984)
Distribution: China (W-Sichuan)
36 CHI
species :
Rhododendron bryophilum
Sleumer; Reinwardtia 5: 79 (1960)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron bullifolium
Sleumer; Blumea 12: 93 (1963)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron bulu
Hutch.; Rhododendron Soc. Notes, 1929-31 3: No. 5, 280 (1932)
Distribution: S-Tibet; ?NE-India
36 TIB
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Lapponica
species :
Rhododendron bureavii
Franch.; Bull. Soc. Bot. France 34: 281-282 (1887)
Distribution: China (NE-Sichuan, SW-Sichuan, N-Yunnan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Taliensia
Synonyms: hidden
= Azalea bureavii (Franch.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron bureavioides Balf.f.; Notes Roy. Bot. Gard. Edinburgh 13(61): 33 (1920)
= Rhododendron cruentum H.Lév.; Repert. Spec. Nov. Regni Veg. 12(325-330): 284 (1913)
species :
Rhododendron burmanicum
Hutch.; Bull. Misc. Inform. Kew 1914: 185 (1914)
Distribution: Myanmar (Chin, Kachin)
41 MYA
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Maddenia
species :
Rhododendron burttii
P.Woods; Notes Roy. Bot. Gard. Edinburgh 37(1): 157 (1978)
Distribution: Borneo (Sarawak)
42 BOR
species :
Rhododendron buruense
J.J.Sm.; Repert. Spec. Nov. Regni Veg. 30: 168 (1932)
Distribution: Moluccas (Buru Isl.)
42 MOL
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron lompohense var. grandifolium J.J.Sm.; Repert. Spec. Nov. Regni Veg. 30: 169 (1932)
species :
Rhododendron buxifolium
H.Low ex Hook.f.; Hooker´s Icon. Pl., t. 890 (1852)
Distribution: Borneo
42 BOR
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron buxifolium var. robustum Sleumer; Reinwardtia 5: 173 (1960)
species :
Rhododendron buxoides
Sleumer; Blumea 21(2): 359 (1973)
Distribution: Borneo (Sarawak)
42 BOR
species :
Rhododendron caesium
Hutch.; Gard. Chron. Ser. 3, 94: 102 (1933)
Distribution: China (Yunnan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Trichoclada
species :
Rhododendron caespitosum
Sleumer; Reinwardtia 5: 137 (1960)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron calendulaceum
(Michx.) Torr.; Fl. N. Middle U. St. 1: 425 (1824)
Name: Flame azalea
Distribution: USA (Alabama, Connecticut, Georgia, Kentucky, Maryland, North Carolina, New York, Ohio, Pennsylvania, South Carolina, Tennessee, Virginia, West Virginia)
75 USA 78 USA
Remarks: Subgen. Pentanthera, Sect. Pentanthera
Synonyms: hidden
= Azalea aurantiaca F.Dietr.; Darst. Vorz. Zierpfl. Hefl. 1: 5 (1803)
= Azalea calendulacea Michx.; Fl. Bor. Amer. 1: 151 (1803)
= Azalea calendulacea var. crocea Michx.; Fl. Bor.-Amer. 1: 151 (1803)
= Azalea coccinea aurantia Lodd.; Bot. Cab. 13: t. 1255 (1827)
= Azalea crocea (Michx.) Hoffmanns.; Verz. Pfl.-Kult., Nachtr. 3: 22 (1828)
= Azalea jammea Pritz.; Icon. Bot. Index [Pritz.] 131 (1854)
= Azalea nudiflora var. aurantiaca (F.Dietr.) Dum.Cours.; Bot. Cult., ed. 2, 3: 333 (1811)
= Azalea nudiflora var. coccinea-major Dum.Cours.; Bot. Cult., ed. 2, 3: 333 (1811)
= Azalea nudiflora var. hirta Elliott; Sketch Bot. S. Carolina 1: 241 (1817)
= Azalea pontica var. calendulacea (Michx.) Pers.; Syn. Pl. [Persoon] 1: 212 (1805)
= Azalea speciosa var. aurantia (Lodd.) DC.; Prodr. [A. P. de Candolle] 7: 717 (1839)
= Azalea speciosa var. aurantiaca (F.Dietr.) G.Kirchn.; Petzold & Kirchner, Arbor. Muscav. 479 (1864)
= Rhododendron calendulaceum f. aurantiacum (F.Dietr.) Zabel; Handb. Laubholzben. [Beissner et al.] [Beissner et al.] 380 (1903)
= Rhododendron calendulaceum f. aurantium (Lodd.) Rehder; Wils. & Rehd., Monogr. Azaleas 130 (1921)
= Rhododendron calendulaceum f. croceum (Michx.) Rehder; Mitt. Deutsch. Dendrol. Ges. 24: 225 (1915 publ. 1916)
= Rhododendron calendulaceum var. croceum (Michx.) Sweet; Hort. Brit., ed. 2: 343 (1830)
= Rhododendron luteum C.K.Schneid.; Ill. Handb. Laubholzk. 2: 500 (1911), nom. illeg.
= Rhododendron luteum var. croceum (Michx.) C.K.Schneid.; Ill. Handb. Laubholzk. 2: 500 (1911)
= Rhododendron speciosum var. aurantium (Lodd.) Sweet; Hort. Brit., ed. 2: 343 (1830)
species :
Rhododendron caliginis
Kores; Blumea 30(1): 45 (1984)
Distribution: New Guinea (Irian Jaya, Papua New Guinea)
42 NWG
species :
Rhododendron callimorphum
Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 10(47-48): 89-90 (1917)
Distribution: China (Yunnan); India (Arunachal Pradesh); Myanmar (Kachin)
36 CHI 40 IND 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Campylocarpa
Synonyms: hidden
= Rhododendron cyclium Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 39-40 (1920)
= Rhododendron hedythamnum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(65): 261-262 (1922)
variant :
var. myiagrum
(Balf.f. & Forrest) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 36(1): 116 (1978)
Distribution: China (NW-Yunnan); NE-Myanmar
36 CHI 41 MYA
Synonyms: hidden
= Rhododendron myiagrum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 52-53 (1920)
species :
Rhododendron calophytum
Franch.; Bull. Soc. Bot. Fr. 33: 250 (1886); et in Nouv. Arch. Mus. Paris, Ser. 2, 10: 45 (1887 publ. 1888)
Distribution: China (S-Shaanxi, SE-Gansu, W-Hubei, SE-Sichuan, W-Sichuan, N-Sichuan, C-Guizhou, N-Guizhou, N-Yunnan, E-Yunnan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Fortunea
variant :
var. jinfuense
W.P.Fang & W.K.Hu; Bull. Bot. Res., Harbin 8(3): 56 (1988)
Distribution: China (Chongqing)
36 CHI
Synonyms: hidden
= Rhododendron calophytum subsp. jinfuense M.Y.Fang; Acta Phytotax. Sin. 26: 68 (1988)
variant :
var. openshawianum
(Rehder & E.H.Wilson) Chamb.; Notes Roy. Bot. Gard. Edinburgh 37(2): 330 (1979)
Distribution: China (SW-Sichuan, NE-Yunnan)
36 CHI
Synonyms: hidden
= Rhododendron openshawianum Rehder & E.H.Wilson; Pl. Wilson. [Sargent] 1: 543 (1913)
variant :
var. pauciflorum
W.K.Hu; Acta Phytotax. Sin. 26(4): 304, f. 4 (1988)
Distribution: China (Chongqing)
36 CHI
species :
Rhododendron calosanthes
Sleumer; Blumea 11: 125 (1961)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron calostrotum
Balf.f. & Kingdon-Ward; Notes Roy. Bot. Gard. Edinburgh 13: 35 (1920)
Distribution: China (Yunnan); Tibet; NE-India (Arunachal Pradesh); Myanmar (Kachin, Chin, Sagaing)
36 CHI TIB 40 IND 41 MYA
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Saluenensia
Synonyms: hidden
= Rhododendron calostrotum subsp. riparium (Kingdon-Ward) Cullen; Notes Roy. Bot. Gard. Edinburgh 36: 112 (1978)
= Rhododendron kingdonii Merr.; Sunyatsenia 3: 256 (1937)
= Rhododendron nitens Hutch.; Gard. Chron., Ser. 3, 99: 10 (1936)
= Rhododendron riparium Kingdon-Ward; Spec. Rhododendron, 598 (1930)
= Rhododendron rivulare Kingdon-Ward; Gard. Chron., Ser. 3, 86: 503 (1929) (not Hand.-Mazz. (1921)
variant :
var. calciphilum
(Hutch. & Kingdon-Ward) Davidian; Rhodod. and Cam. Year Book 8: 87. (1954)
Distribution: China (NW-Yunnan); SE-Tibet; Myanmar (Kachin)
36 CHI TIB 41 MYA
Synonyms: hidden
= Rhododendron calciphilum Hutch. & Kingdon-Ward; Spec. Rhododendron, 589 (1930), et Notes Bot. Gard. Edinb. 16: 179 (1931), latine
species :
Rhododendron calvescens
Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 11(52-53): 29-31 (1919)
Distribution: China (NW-Yunnan); Tibet
36 CHI TIB
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Selensia
variant :
var. duseimatum
(Balf.f. & Forrest) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 36(1): 119 (1978)
Distribution: SE-Tibet
36 TIB
Synonyms: hidden
= Rhododendron duseimatum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 41-42 (1920)
= Rhododendron selense subsp. duseimatum (Balf.f. & Forrest) Tagg; Spec. Rhododendron 722 (1930)
= Rhododendron selense var. duseimatum (Balf.f. & Forrest) Cowan & Davidian; Rhododendron Year Book 6: 152 (1952)
species :
Rhododendron camelliiflorum
Hook.f.; Rhod. Sikkim. Himal. t. 28 (1849)
Distribution: S-Tibet; Nepal; Bhutan; India (Arunachal Pradesh, Sikkim)
36 TIB 40 BHU IND NEP
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Camelliiflora
Synonyms: hidden
= Azalea camelliiflora (Hook.f.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Azalea lucida (Nutt.) Meerb.; Pl. Select. Icon. Pict. 7 (1798)
= Rhododendron cooperi Balf.f.; Notes Roy. Bot. Gard. Edinburgh 10: 91 (1917)
= Rhododendron lucidum Nutt.; Hooker´s J. Bot. Kew Gard. Misc. 5: 363 (1853)
= Rhododendron sparsiflorum Nutt; Hooker´s J. Bot. Kew Gard. Misc. 5: 363 (1853)
species :
Rhododendron campanulatum
D.Don; Mem. Wern. Nat. Hist. Soc. 3: 410 (1821)
Distribution: S-Tibet; Pakistan (Sind); Nepal; Bhutan; N-India (Arunachal Pradesh, Himachal Pradesh, Jammu & Kashmir, Sikkim, Uttarakhand, West Bengal, Chumbi); Myanmar (Kachin)
36 TIB 40 BHU IND NEP PAK 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Campanulata
Synonyms: hidden
= Azalea campanulata (D.Don) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron batemanii Hook.f.; Bot. Mag. 89: t. 5387 (1863)
= Rhododendron campanulatum var. album-violaceum Van Geert; Nursery Cat. (Auguste Van Geert) 1854: 26 (1854)
= Rhododendron campanulatum var. alexandria Van Geert; Nursery Cat. (Auguste Van Geert) 1854: 26 (1854)
= Rhododendron campanulatum var. amabile Van Geert; Nursery Cat. (Auguste Van Geert) 1854: 26 (1854)
= Rhododendron campanulatum var. leopoldii Verschaff. ex Van Geert; Nursery Cat. (Auguste Van Geert) 1854: 26 (1854)
= Rhododendron campanulatum var. lilacinum Verschaff. ex Van Geert; Nursery Cat. (Auguste Van Geert) 1854: 26 (1854)
= Rhododendron campanulatum var. mirendum Van Geert; Nursery Cat. (Auguste Van Geert) 1854: 26 (1854)
= Rhododendron campanulatum var. purpureum-maculatum Van Geert; Nursery Cat. (Auguste Van Geert) 1854: 26 (1854)
= Rhododendron campanulatum var. rubrum-grandiflorum Van Geert; Nursery Cat. (Auguste Van Geert) 1854: 26 (1854)
= Rhododendron campanulatum var. superbum Van Geert; Nursery Cat. (Auguste Van Geert) 1854: 26 (1854)
= Rhododendron campanulatum var. violaceum Verschaff. ex Van Geert; Nursery Cat. (Auguste Van Geert) 1854: 26 (1854)
= Rhododendron campanulatum var. violaceum-pallidum Verschaff. ex Van Geert; Nursery Cat. (Auguste Van Geert) 1854: 26 (1854)
= Rhododendron campanulatum var. wallichii (Hook.f.) Hook.; Bot. Mag. 82: t. 4928 (1856)
= Rhododendron edgarii Gamble; Darjeeling List Trees, 52 (1878)
= Rhododendron heftii Davidian; Rhododendron Species, 2 (Ser. Arboreum-Lacteum): 307, 149 (1989)
= Rhododendron mutabile Webb ex Royle; Illustr. Bot. Himal. 259 (1836)
= Rhododendron nobile Wall.; Numer. List [Wallich] no. 1521 (1830)
= Rhododendron planifolium Nutt.; Hooker´s J. Bot. Kew Gard. Misc. 5: 365 (1853)
= Rhododendron wallichii Hook.f.; Rhododendron Sikkim Himalaya 4, t. 5 (1849)
species :
Rhododendron campylocarpum
Hook.f.; Rhododendron Sikkim Himalaya t. 33 (1851)
subspecies :
subsp. campylocarpum
Distribution: Tibet; Nepal; Bhutan; N-India (Arunachal Pradesh, Sikkim)
36 TIB 40 BHU IND NEP
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Campylocarpa
Synonyms: hidden
= Azalea campylocarpa (Hook.f.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
subspecies :
subsp. caloxanthum
(Balf.f. & Forrest) Chamb.; Notes Roy. Bot. Gard. Edinburgh 36(1): 116 (1978)
Distribution: China (NW-Yunnan); E-Tibet; Myanmar (Kachin)
36 CHI TIB 41 MYA
Synonyms: hidden
= Rhododendron caloxanthum Balf.f. & Farrer; Notes Roy. Bot. Gard. Edinburgh 13(65): 238-239 (1922)
= Rhododendron campylocarpum subsp. telopeum (Balf.f. & Forrest) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 36(1): 116 (1978)
= Rhododendron campylocarpum var. orbiculare Demoly; Bull. Ass. Parcs Bot. France 13: 10 (1990) (nom. nov. superfl.)
= Rhododendron telopeum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 61 (1920)
species :
Rhododendron campylogynum
Franch.; Bull. Soc. Bot. Fr. 32: 10 (1885)
Distribution: China (Yunnan); S-Tibet; India (Arunachal Pradesh); NE-Myanmar (Kachin)
36 CHI TIB 40 IND 41 MYA
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Campylogyna
Synonyms: hidden
= Azalea campylogyna (Franch.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron amphichlorum Ingram; Rhododendron Camellia Year Book 23: 49 (1968)
= Rhododendron caeruleoglaucum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13: 34 (1920)
= Rhododendron campylogynum var. celsum Davidian; Rhododendron Year Book 8: 83 (1954)
= Rhododendron campylogynum var. charopoeum (Balf.f. & Farrer) Davidian; Rhododendron Camellia Year Book 8: 83 (1954)
= Rhododendron campylogynum var. eupodum Ingram; Rhododendron Camellia Year Book 23: 50 (1968)
= Rhododendron campylogynum var. leucanthum Ingram; Rhododendron Camellia Year Book 23: 49 (1968)
= Rhododendron campylogynum var. myrtilloides (Balf.f. & Kingdon-Ward) Davidian; Rhododendron Year Book 8: 84 (1954)
= Rhododendron charopoeum Balf.f. & Farrer; Notes Roy. Bot. Gard. Edinburgh 13: 245 (1922)
= Rhododendron cremastum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13: 39 (1920)
= Rhododendron damascenum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13: 254 (1922)
= Rhododendron glaucoaureum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13: 46 (1920)
= Rhododendron myrtilloides Balf.f. & Kingdon-Ward; Notes Roy. Bot. Gard. Edinburgh 13: 276 (1922)
species :
Rhododendron camtschaticum
Pall.; Fl. Ross. [Pallas] 1: 48. t. 33 (1789)
Name: Kamchatka rhododendron
Distribution: Russian Far East (Kamchatka, Khabarovsk, Kuril Isl., Magadan, Sakhalin); Japan (Hokkaido, Honshu); Alaska; Aleutes
31 RFE 38 JAP 70 ASK
Synonyms: hidden
= Azalea camtschatica (Pall.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Chamaecistus camtschaticus (Pall.) Regel; Gartenflora 23: 60 (1874)
= Rhodothamnus camtschaticus (Pall.) Peterm.; Pflanzenreich 551 (1841)
= Therorhodion camtschaticum (Pall.) Small; Britton et al. (eds.), N. Amer. Fl. 29: 45 (1914)
= Therorhodion camtschaticum f. albiflorum Nakai; Nakai & G. Koidz., Trees Shrubs Japan, rev. ed. 42 (1927)
species :
Rhododendron canadense
(L.) Torr.; Rep. Bot. Dep. Surv. New York, no. 50, Assembly 151 (1841)
Name: Rhodora
Distribution: Canada (Labrador, New Brunswick, Newfoundland, Nova Scotia, Ontario, Prince Edward Isl., Québec); St. Pierre et Miquelon; USA (Connecticut, Massachusetts, Maine, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island, Vermont)
72 CDN SPM 75 USA
Remarks: Subgen. Pentanthera, Sect. Rhodora
Synonyms: hidden
= Azalea canadense (L.) Kuntze; Revis. Gen. Pl. 2: 386 (1891)
= Hochenwartia canadensis (L.) Crantz; Inst. 2: 469 (1766)
= Rhododendron canadense (L.) Britton, Sterns & Poggenb.; Prelim. Catal. (1888) 32
= Rhododendron canadense f. albiflorum (E.L.Rand & Redfield) Rehder; Wils. & Rehd., Monogr. Azaleas 122 (1921)
= Rhododendron canadense f. album Voss; Vilm. Blumengärtn. ed. 3. 1: 587 (1894)
= Rhododendron canadense f. viridifolium Rehder; Wils. & Rehd., Monogr. Azaleas 122 (1921)
= Rhododendron pulchellum Salisb.; Prodr. Stirp. Chap. Allerton 287 (1796), nom. superfl.
= Rhododendron rhodora f. albiflorum E.L.Rand & Redfield; Fl. Mt. Desert Isl. 127 (1894)
= Rhododendron rhodora J.F.Gmel.; Syst. Nat., ed. 13[bis] 694 (1791), nom. superfl.
= Rhodora canadensis L.; Sp. Pl., ed. 2 [Linnaeus] 2: 561 (1763)
= Rhodora congesta Moench; Meth. 68 (1794)
species :
Rhododendron canescens
(Michx.) G.Don; Gen. Hist. 3: 848 (1834)
Name: Mountain azalea
Distribution: USA (Alabama, Arkansas, Delaware, Florida, Georgia, Kentucky, Louisiana, Maryland, Mississippi, North Carolina, Oklahoma, Pennsylvania, South Carolina, Tennessee, Texas)
74 USA 75 USA 77 USA 78 USA
Remarks: Subgen. Pentanthera, Sect. Pentanthera
Synonyms: hidden
= Azalea bicolor (Aiton) Pursh; Fl. Amer. Sept. 1: 153 (1813)
= Azalea candida Small; Bull. Torrey Bot. Club 360 (1901)
= Azalea canescens Michx.; Fl. Bor. Amer. 1: 150 (1803)
= Azalea canescens var. candida (Small) Ashe; J. Elisha Mitchell Sci. Soc. 38: 91 (1922)
= Azalea nudiflora var. bicolor Aiton; Hort. Kew. 1: 203 (1789)
= Azalea nudiflora var. canescens (Michx.) Rehder; Cycl. Amer. Hort. [L.H.Bailey] 1: 121 (1900)
= Rhododendron bicolor (Aiton) Sweet; Hort. Brit., ed. 2: 344 (1830)
= Rhododendron candidum (Small) Rehder; Stand. Cycl. Hort. 2945 (1916)
= Rhododendron canescens f. subglabrum Rehder; Wils. & Rehd., Monogr. Azaleas 145 (1921)
= Rhododendron canescens var. candidum (Small) Rehder; Monogr. Azaleas [E. H. Wilson & A. Rehder] 146 (1921)
species :
Rhododendron capellae
Kores; Blumea 24(1): 181 (1978)
Distribution: New Guinea (Papua New Guinea)
42 NWG
species :
Rhododendron capitatum
Maxim.; Bull. Acad. Petersb. 23: 351 (1877)
Distribution: China (Gansu, Qinghai, Shaanxi, NW-Sichuan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Lapponica
Synonyms: hidden
= Azalea capitata (Maxim.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
species :
Rhododendron carneum
Hutch.; Bot. Mag. t. 8634 (1915)
Distribution: China (NW-Yunnan); Myanmar (Kachin); Vietnam
36 CHI 41 MYA VIE
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Maddenia
species :
Rhododendron carrii
Sleumer; Reinwardtia 5: 124 (1960)
Distribution: New Guinea (Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron carringtoniae
F.Muell.; Vict. Naturalist 4: 110 (1887); et in Bot. Centralbl. 33: 55 (1888)
Distribution: New Guinea (Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron carstensense
Wernham; Trans. Linn. Soc. London, Bot. 9: 96 (1916)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron catacosmum
Balf.f. ex Tagg; Notes Roy. Bot. Gard. Edinburgh 15: 307 (1926)
Distribution: China (NW-Yunnan); SE-Tibet
36 CHI TIB
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Neriiflora
species :
Rhododendron catawbiense
Michx.; Fl. Bor. Amer. 1: 258 (1803)
Name: Catawba rosebay (EN)
Distribution: Germany [I]; Slovakia [I]; USA (Alabama, Georgia, Kentucky, Massachusetts, North Carolina, South Carolina, Tennessee, Virginia, West Virginia)
11 ger slo 75 USA 78 USA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Pontica
Synonyms: hidden
= Azalea catawbiensis (Michx.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Hymenanthes catawbiensis (Michx.) H.F.Copel.; Amer. Midl. Naturalist 30: 614 (1943)
= Rhododendron catawbiense f. album (P.Glass) Rehder; Bibliogr. Cult. Trees 504 (1949)
= Rhododendron catawbiense f. compactum Kelsey ex Nearing; Arbor. Bull., Washington 8(4): 3 (1945 publ. 1946)
= Rhododendron catawbiense f. insularis Coker; J. Elisha Mitchell Sci. Soc. 35: 81 (1919)
= Rhododendron catawbiense f. tomopetalum Rehder; J. Arnold Arbor. 20: 424 (1939)
= Rhododendron catawbiense var. album P.Glass; Natl. Hort. Mag. 16: 253 (1937)
species :
Rhododendron caucasicum
Pall.; Fl. Ross. [Pallas] 1: 46, t. 31 (1789)
Distribution: Northern Caucasus; Georgia [Caucasus]; Armenia; Azerbaijan; NE-Turkey
33 ARM AZE GEO NCS 34 TUR
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Pontica
Synonyms: hidden
= Azalea caucasica (Pall.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron caucasicum f. flavidum (Regel) Rehder; Bibliogr. Cult. Trees 506 (1949)
= Rhododendron caucasicum f. stramineum (Hook.) Rehder; Bibliogr. Cult. Trees 506 (1949)
= Rhododendron caucasicum var. albicans Van Geert; Nursery Cat. (Auguste Van Geert) 1854: 26 (1854)
= Rhododendron caucasicum var. alboroseum Van Geert; Nursery Cat. (Auguste Van Geert) 1854: 26 (1854)
= Rhododendron caucasicum var. album-amoenum Van Geert; Nursery Cat. (Auguste Van Geert) 1854: 26 (1854)
= Rhododendron caucasicum var. album-egregium Verschaff. ex Van Geert; Nursery Cat. (Auguste Van Geert) 1854: 26 (1854)
= Rhododendron caucasicum var. album-lilacinum Van Geert; Nursery Cat. (Auguste Van Geert) 1854: 26 (1854)
= Rhododendron caucasicum var. album-mutabile Van Geert; Nursery Cat. (Auguste Van Geert) 1854: 26 (1854)
= Rhododendron caucasicum var. atrorubens Van Geert; Nursery Cat. (Auguste Van Geert) 1854: 26 (1854)
= Rhododendron caucasicum var. bicolor Verschaff. ex Van Geert; Nursery Cat. (Auguste Van Geert) 1854: 26 (1854)
= Rhododendron caucasicum var. delicatum-novum Verschaff. ex Van Geert; Nursery Cat. (Auguste Van Geert) 1854: 26 (1854)
= Rhododendron caucasicum var. flavescens Verschaff. ex Van Geert; Nursery Cat. (Auguste Van Geert) 1854: 26 (1854)
= Rhododendron caucasicum var. flavidum Regel; Gartenflora 16: 322 (1867)
= Rhododendron caucasicum var. grandiceps Van Geert; Nursery Cat. (Auguste Van Geert) 1854: 26 (1854)
= Rhododendron caucasicum var. nobile Van Geert; Nursery Cat. (Auguste Van Geert) 1854: 26 (1854)
= Rhododendron caucasicum var. roseum-delicatissimum Van Geert; Nursery Cat. (Auguste Van Geert) 1854: 26 (1854)
= Rhododendron caucasicum var. roseum-maculatiflorum Van Geert; Nursery Cat. (Auguste Van Geert) 1854: 26 (1854)
= Rhododendron caucasicum var. roseum-purpurascens Van Geert; Nursery Cat. (Auguste Van Geert) 1854: 26 (1854)
= Rhododendron caucasicum var. roseum-tigrinum Van Geert; Nursery Cat. (Auguste Van Geert) 1854: 26 (1854)
= Rhododendron caucasicum var. roseum-variabile Van Geert; Nursery Cat. (Auguste Van Geert) 1854: 26 (1854)
= Rhododendron caucasicum var. stramineum Hook.; Bot. Mag. 62: t. 3422 (1835)
= Rhododendron caucasicum var. triumphans Van Geert; Nursery Cat. (Auguste Van Geert) 1854: 26 (1854)
species :
Rhododendron cavaleriei
H.Lév.; Bull. Soc. Agric. Sarthe 31: 48 (1903)
Distribution: China (Fujian, Guangdong, Guangxi, W-Guizhou, Hainan, Jiangxi); N-Vietnam
36 CHI 41 VIE
Remarks: Subgen. Azaleastrum, Sect. Choniastrum
Synonyms: hidden
= Rhododendron dentampullum Chun ex P.C.Tam; Surv. Genus Rhododendron S. China 113, 80 (1983)
= Rhododendron henryi var. pubescens K.M.Feng & A.L.Chang; Acta Bot. Yunnan. 4(3): 257 (1982)
species :
Rhododendron celebicum
(Blume) DC.; Prod. 7: 725 (1839)
Distribution: Sulawesi
42 SUL
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Azalea celebica Blume ex DC.; Prodr. [A. P. de Candolle] 8: 725 (1844), nom. inval.
= Rhododendron discolor Warb. ex Sarasin; Reis. Celebes 1: 28 (1905), nom. illeg.
= Rhododendron tubulosum Reinw.; Reis Oost. Ged. Ind. Archip. 576 (1858)
= Vireya celebica Blume; Bijdr. Fl. Ned. Ind. 855 (1826)
species :
Rhododendron cephalanthum
Franch.; Bull. Soc. Bot. Fr. 32: 9 (1885)
Distribution: China (S-Qinghai, NW-Sichuan, Yunnan); S-Tibet; NE-India (Arunachal Pradesh); Myanmar (Chin, Kachin, Sagaing)
36 CHI TIB 40 IND 41 MYA
Remarks: Subgen. Rhododendron, Sect. Pogonanthum
Synonyms: hidden
= Azalea cephalantha (Franch.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron cephalanthum var. crebreflorum (Hutch. & Kingdon-Ward) Cowan & Davidian; Rhodod. Yearbook 2: 70 (19479
= Rhododendron chamaetortum Balf.f. & Kingdon-Ward; Notes Roy. Bot. Gard. Edinburgh 9: 218 (1916)
= Rhododendron crebreflorum Hutch. & Kingdon-Ward; Spec. Rhododendron, 206 (1930), et Notes Bot. Gard. Edinb. 16: 173 (1931), latine
= Rhododendron nwaiense Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 9: 252 (1916)
species :
Rhododendron cerasinum
Tagg; Notes Roy. Bot. Gard. Edinburgh 16(79): 188-189 (1931)
Distribution: SE-Tibet; India (Arunachal Pradesh:); N-Myanmar (Kachin)
36 TIB 40 IND 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Thomsonia
Synonyms: hidden
= Rhododendron cerasiflorum Kingdon-Ward; Gard. Chron., Ser. 3, 93: 277 (1933), nom. nud.
species :
Rhododendron cernuum
Sleumer; Reinwardtia 5: 111 (1960)
Distribution: S-Sumatra
42 SUM
Remarks: Subgen. Rhododendron
species :
Rhododendron chamaethomsonii
(Tagg & Forrest) Cowan & Davidian; Rhododendron Year Book 6: 70 (1951)
Distribution: China (NW-Yunnan); SE-Tibet; India (Arunachal Pradesh)
36 CHI TIB 40 IND
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Neriiflora
Synonyms: hidden
= Rhododendron repens var. chamaethomsonii Tagg & Forrest; Notes Roy. Bot. Gard. Edinburgh 16(79): 206-207 (1931)
variant :
var. chamaedoron
(Tagg & Forrest) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 37(2): 332 (1979)
Distribution: China (NW-Yunnan); SE-Tibet
36 CHI TIB
Synonyms: hidden
= Rhododendron repens var. chamaedoron Tagg & Forrest; Notes Roy. Bot. Gard. Edinburgh 16(79): 206 (1931)
variant :
var. chamaethauma
(Tagg) Cowan & Davidian; Rhododendron Year Book 6: 71 (1951)
Distribution: China (NW-Yunnan); SE-Tibet; India (Arunachal Pradesh)
36 CHI TIB 40 IND
Synonyms: hidden
= Rhododendron repens var. chamaethauma Tagg; Notes Roy. Bot. Gard. Edinburgh 16(79): 206 (1931)
species :
Rhododendron chamahense
Rafidah; Blumea 57(2): 114 (2012)
Distribution: peninsular Malaysia
42 MLY
species :
Rhododendron chamberlainii
Craven; Blumea 56(1): 34 (2011), nom. nov.
Distribution: China (NW-Yunnan); SE-Tibet; Nepal; Bhutan; N-India (Arunachal Pradesh, Sikkim, Chumbi); Myanmar (Kachin)
36 CHI TIB 40 BHU IND NEP 41 MYA
Synonyms: hidden
= Diplarche multiflora Hook.f. & Thomson; Hooker´s J. Bot. Kew Gard. Misc. 6: 383 (1854)
species :
Rhododendron championiae
Hook.; Bot. Mag. 77: t. 4609 (1851)
Distribution: China (Fujian, Guangdong, Guangxi, Hunan, Jiangxi, Zhejiang)
36 CHI
Remarks: Subgen. Azaleastrum, Sect. Choniastrum
Synonyms: hidden
= Azalea championiae (Hook.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron championiae var. ovalifolium P.C.Tam; Survey Genus Rhododendron S. China 73, 112 (1983)
= Rhododendron subespitatum Chun ex P.C.Tam; Bull. Bot. Res., Harbin 2(4): 90-91, f. 3 (1982)
species :
Rhododendron changii
(W.P.Fang) W.P.Fang; Acta Phytotax. Sin. 21(4): 465 (1983)
Distribution: China (Chongqing)
36 CHI
Synonyms: hidden
= Rhododendron valentianum var. changii W.P.Fang; Contr. Biol. Lab. Chin. Assoc. Advancem. Sci., Sect. Bot. 12: 71 (1939)
species :
Rhododendron chaoanense
T.C.Wu & P.C.Tam; Med. Mat. Guangdong 4: 35 (1978)
Distribution: China (Guangdong)
36 CHI
species :
Rhododendron charitopes
Balf.f. & Farrer; Notes Roy. Bot. Gard. Edinburgh 13: 243 (1922)
subspecies :
subsp. charitopes
Distribution: China (NW-Yunnan); NE-Myanmar (Kachin)
36 CHI 41 MYA
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Glauca
subspecies :
subsp. tsangpoense
(Ward) Cullen; Notes Roy. Bot. Gard. Edinburgh 36(1): 114 (1978)
Distribution: S-Tibet
36 TIB
Synonyms: hidden
= Rhododendron tsangpoense Kingdon-Ward; Gard. Chron., Ser. 3, 86: 504 (1929)
= Rhododendron tsangpoense var. curvistylum Kingdon-Ward ex Cowan & Davidian; Rhododendron Year Book 3: 90 (1948)
species :
Rhododendron charitostreptum
Balf.f. & Kingdon-Ward; Notes Roy. Bot. Gard. Edinburgh 13: 244 (1922)
Distribution: Myanmar (Kachin)
41 MYA
species :
Rhododendron chevalieri
Dop ex A.Chev.; Rev. Bot. Appliq. 9: 256 (1929)
Distribution: Laos; C-Vietnam
41 LAO VIE
Remarks: Subgen. Rhododendron
species :
Rhododendron chihsinianum
Chun & W.P.Fang; Acta Phytotax. Sin. 6(2): 168-169, pl. 40, f. 1 (1957)
Distribution: China (N-Guangxi)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Auriculata
species :
Rhododendron chilanshanense
Kurash.; Edinburgh J Bot. 56(1): 75 (1999)
Distribution: Taiwan
38 TAI
species :
Rhododendron chiliangense
S.S.Ying; New Taxa New Names 5: 217 (2022)
Distribution: Taiwan
38 TAI
Remarks: provisionally accepted name
species :
Rhododendron chionanthum
Tagg & Forrest; Notes Roy. Bot. Gard. Edinburgh 15(75): 309 (1927)
Distribution: China (W-Yunnan); NE-Myanmar
36 CHI 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Neriiflora
species :
Rhododendron christi
F.Först.; Repert. Spec. Nov. Regni Veg. 13: 222 (1914)
Distribution: New Guinea (Irian Jaya, Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron, Sect. Vireya
Synonyms: hidden
= Rhododendron christi var. loniceroides Schltr.; Bot. Jahrb. Syst. 55: 155 (1917)
species :
Rhododendron christianiae
Sleumer; Reinwardtia 5: 211 (1960)
Distribution: New Guinea (Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron chrysocalyx
H.Lév. & Vaniot; Repert. Spec. Nov. Regni Veg. 2(21): 113 (1906)
Distribution: China (S-Guizhou, W-Hubei, N-Guangxi)
36 CHI
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
Synonyms: hidden
= Rhododendron kouytchense H.Lév.; Fl. Kouy-Tcheou 152 (1914)
= Rhododendron spinigerum H.Lév.; Bull. Acad. Int. Geogr. Bot. 24(295-297): 251 (1914)
variant :
var. xiushanense
(W.P.Fang) M.Y.He; Fl. Reipubl. Popularis Sin. 57(2): 407 (1994)
Distribution: China (S-Sichuan)
36 CHI
Synonyms: hidden
= Rhododendron xiushanense W.P.Fang; Acta Phytotax. Sin. 21(4): 461-462, f. 6 (1983)
species :
Rhododendron chrysodoron
Tagg ex Hutch.; Gard. Chron., Ser. 3, 95: 276 (1934)
Distribution: China (NW-Yunnan); SE-Tibet; NE-Myanmar
36 CHI TIB 41 MYA
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Boothia
Synonyms: hidden
= Rhododendron chrysodorum W.W.Sm. ex Stair; Rhododendron Soc. Notes, 1929-31 3: No. 5, 307 (1932)
species :
Rhododendron chrysolepis
Hutch. & Kingdon-Ward; Spec. Rhododendron, 161 (1930), et Notes Bot. Gard. Edinb. 16: 172 (1931), latine
Distribution: Myanmar (Chin, Kachin, Sagaing)
41 MYA
species :
Rhododendron chunienii
Chun & W.P.Fang; Acta Phytotax. Sin. 6: 169 (1957)
Distribution: China (NE-Guangxi, Hunan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Maddenia
species :
Rhododendron chunii
W.P.Fang; Sunyatsenia 7(1-2): 1-2 (1948)
subspecies :
subsp. chunii
Distribution: China (N-Guangdong)
36 CHI
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
subspecies :
subsp. vietnamense
R.A.Baines & D.F.Chamb.; Edinburgh J. Bot. 78-363: 4 (2021)
Distribution: Vietnam
41 VIE
species :
Rhododendron ciliatum
Hook.f.; Rhod. Sikkim-Himal. t. 24 (1851)
Distribution: S-Tibet; W-Nepal; Bhutan; N-India (Sikkim)
36 TIB 40 BHU IND NEP
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Maddenia
Synonyms: hidden
= Azalea ciliata (Hook.f.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
species :
Rhododendron ciliicalyx
Franch.; Bull. Soc. Bot. Fr. 33: 233 (1886)
Distribution: China (Guizhou, Yunnan); ?NE-India (?Arunachal Pradesh); Myanmar; Thailand; Laos; Vietnam
36 CHI 41 LAO MYA THA VIE
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Maddenia. Synonymy fide Flora of Thailand vol. 13(1)
Synonyms: hidden
= Azalea ciliicalyx (Franch.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron ciliicalyx subsp. lyi (H.Lév.) R.C.Fang; Fl. Yunnan. 4: 479 (1986)
= Rhododendron leptocladon Dop; Fl. Indo-Chine [P.H.Lecomte et al.] 3: 745 (1930)
= Rhododendron ludwigianum Hosseus; Beih. Bot. Centralbl. 28(2): 422 (1911)
= Rhododendron lyi H.Lév.; Repert. Spec. Nov. Regni Veg. 13: 147 (1914)
= Rhododendron missionarium H.Lév.; Bull. Acad. Int. Géogr. Bot. 25: 20 (1915)
= Rhododendron nemorosum R.C.Fang; Acta Bot. Yunnan. 6(3): 290 (1984)
= Rhododendron pseudociliicalyx Hutch.; Notes Roy. Bot. Gard. Edinburgh 12: 54 (1919)
= Rhododendron saravanense Dop; Fl. Indo-Chine [P.H.Lecomte et al.] 3: 745 (1930)
= Rhododendron surasianum Balf.f. & Craib; Notes Roy. Bot. Gard. Edinburgh 10: 160 (1917)
species :
Rhododendron ciliilobum
Sleumer; Reinwardtia 5: 64 (1960)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron ciliipes
Hutch.; Spec. Rhododendron, 457 (1930), et Notes Bot. Gard. Edinb. 16: 177 (1931), latine
Distribution: China (Yunnan); Myanmar (Kachin, Sagaing)
36 CHI 41 MYA
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Maddenia
species :
Rhododendron cinchoniflorum
Sleumer; Reinwardtia 5: 68 (1960)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron cinerascens
Sleumer; Reinwardtia 5: 130 (1960)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron cinnabarinum
Hook.f.; Rhod. Sikkim-Himal. t. 8 (1849)
subspecies :
subsp. cinnabarinum
Distribution: Tibet; Nepal; Bhutan; N-India (Arunachal Pradesh, Sikkim, West Bengal)
36 TIB 40 BHU IND NEP
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Cinnabarina
Synonyms: hidden
= Azalea roylei (Hook.f.) Kuntze; Revis. Gen. Pl. 2: 386 (1891)
= Rhododendron basfordii Davidian; Rhododendrons (London), 1979-1980: 61 (1980)
= Rhododendron blandfordiiflorum Hook.; Bot. Mag. 82: t. 4930 (1856)
= Rhododendron cinnabarinum var. breviforme Davidian; J. Amer. Rhododendron Soc. 36(1): 16 (1982)
= Rhododendron cinnabarinum var. roylei (Hook.f.) Tagg; Stevenson, Spec. Rhododendron 222 (1930)
= Rhododendron roylei Hook.f.; Rhod. Sikkim-Himal. t. 7 (1849)
= Rhododendron thibaudiense Dombrain; Floral Mag. (London) 4: t. 253 (1865)
subspecies :
subsp. tamaense
(Davidian) Cullen; Notes Roy. Bot. Gard. Edinburgh 36(1): 113 (1978)
Distribution: China (NW-Yunnan); NE-Myanmar
36 CHI 41 MYA
Synonyms: hidden
= Rhododendron tamaense Davidian; Rhododendrons (London), 1972: 54 (1972)
subspecies :
subsp. xanthocodon
(Hutch.) Cullen; Notes Roy. Bot. Gard. Edinburgh 36(1): 113 (1978)
Distribution: Tibet; Bhutan; NE-India (Arunachal Pradesh)
36 TIB 40 BHU IND
Synonyms: hidden
= Rhododendron cinnabarinum var. pallidum Hook.; Bot. Mag. 80: t. 4788 (1854)
= Rhododendron cinnabarinum var. purpurellum Cowan; Notes Roy. Bot. Gard. Edinburgh 21: 147 (1953)
= Rhododendron concatenans Hutch.; Gard. Chron. 1935, Ser. 3, 97: 376 (1935)
= Rhododendron xanthocodon Hutch.; Gard. Chron., Ser. 3, 95: 409 (1934)
species :
Rhododendron circinnatum
Cowan & Kingdon-Ward in Cowan; Notes Roy. Bot. Gard. Edinburgh 19(93): 179-180 (1936)
Distribution: S-Tibet
36 TIB
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Lanata
species :
Rhododendron citriniflorum
Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 11(52-53): 35-37 (1919), et ex Cowan, Notes Bot. Gard. Edinb. 20: 74 (1940), descr. emend.
Distribution: China (NW-Yunnan); SE-Tibet; Myanmar (Kachin)
36 CHI TIB 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Neriiflora
Synonyms: hidden
= Rhododendron chlanidotum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 38 (1920)
variant :
var. horaeum
(Balf.f. & Forrest) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 37(2): 332 (1979)
Distribution: China (NW-Yunnan); SE-Tibet
36 CHI TIB
Synonyms: hidden
= Rhodendron horaeum var. rubens (Cowan) Davidian; Rhododendron Species, 3 (Ser. Neriiflorum-Thomsonii, etc.): 129 (1992)
= Rhododendron citriniflorum subsp. aureolum Cowan; Notes Roy. Bot. Gard. Edinburgh 20(97): 75 (1940)
= Rhododendron citriniflorum subsp. horaeum (Balf.f. & Forrest) Cowan; Notes Roy. Bot. Gard. Edinburgh 20(97): 76 (1940)
= Rhododendron citriniflorum subsp. rubens Cowan; Notes Roy. Bot. Gard. Edinburgh 20: 76 (1940)
= Rhododendron horaeum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13: 264 (1922)
= Rhododendron horaeum var. rubens (Cowan) Davidian; Rhododendron Species 3: 129 (1992)
species :
Rhododendron citrinum
(Hassk.) Hassk.; Cat. Pl. Hort. Bog. Alt. 161 (1844)
Distribution: Java; Lesser Sunda Isl.
42 JAW LSI
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Azalea citrina (Hassk.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron zippelii Blume; Fl. Javae, Pl. Inéd., t. 4 (1863-1883)
variant :
var. discoloratum
Sleumer; Reinwardtia 5: 145 (1960)
Distribution: Java
42 JAW
species :
Rhododendron clementinae
Forrest; Notes Roy. Bot. Gard. Edinburgh 8(40): 343 (1915)
Distribution: China (SW-Sichuan, NW-Yunnan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Taliensia
species :
Rhododendron cochlearifolium
Xiang Chen & Jia Y.Huang; Ann. Bot. Fenn. 49(5-6): 422 (2012)
Distribution: China (Guizhou)
36 CHI
species :
Rhododendron cockburnii
(Argent, A.Lamb & Phillipps) Craven; J. Adelaide Bot. Gard. 27(4): 28 (2014)
Distribution: Borneo (Sabah)
42 BOR
Synonyms: hidden
= Rhododendron brookeanum subsp. cockburnii (Argentina, A.Lamb & Phillipps) Argent; Edinburgh J. Bot. 52(3): 364 (1995)
= Rhododendron javanicum subsp. cockburnii Argent, A.Lamb & Phillipps; Notes Roy. Bot. Gard. Edinburgh 42(1): 113 (1984)
species :
Rhododendron codonanthum
Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(65): 249-250 (1922)
Distribution: China (NW-Yunnan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Taliensia
species :
Rhododendron coelicum
Balf.f. & Farrer; Notes Roy. Bot. Gard. Edinburgh 13: 250 (1922)
Distribution: China (W-Yunnan); Myanmar (Kachin)
36 CHI 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Neriiflora
species :
Rhododendron coeloneurum
Diels; Bot. Jahrb. Syst. 29: 513 (1900)
Distribution: China (Guizhou, S-Sichuan, NE-Yunnan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Taliensia
species :
Rhododendron coelorum
Wernham; Trans. Linn. Soc. London, Bot. 9: 96 (1916)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron colemanii
R.F.Mill.; J. Amer. Rhododendron Soc. 62(2): 76 (2008)
Distribution: USA (Alabama: Monroe Co.)
78 USA
species :
Rhododendron collettianum
Aitch. & Hemsl.; J. Linn. Soc., Bot. 18: 75 (1880)
Distribution: Afghanistan (Kunar / Nuristan, Paktia / Khost); Pakistan (Kurram, Chitral); India (Jammu & Kashmir)
34 AFG 40 IND PAK
Remarks: Subgen. Rhododendron, Sect. Pogonanthum
species :
Rhododendron columbianum
(Piper) Harmaja; Ann. Bot. Fenn. 27(2): 203 (1990)
Name: Western Labrador tea
Distribution: Canada (Alberta, British Columbia); USA (California, Idaho, Montana, Nevada, Oregon, Utah, Washington State, Wyoming)
71 CDN 73 USA 76 USA
Synonyms: hidden
= Ledum californicum Kellogg; Proc. Calif. Acad. Sci. 2: 14 (1863)
= Ledum columbianum Piper; Contr. U.S. Natl. Herb. 11: 441 (1906)
= Ledum glandulosum Nutt.; Trans. Amer. Philos. Soc., n. s. 8: 270 (1842)
= Ledum glandulosum subsp. columbianum (Piper) C.L.Hitchc.; Leafl. W. Bot. 8: 7 (1956)
= Ledum glandulosum subsp. olivaceum C.L.Hitchc.; Leafl. W. Bot. 8: 6 (1956)
= Ledum glandulosum var. australe C.L.Hitchc.; Leafl. W. Bot. 8: 8 (1956)
= Ledum glandulosum var. californicum (Kellogg) C.L.Hitchc.; Leafl. W. Bot. 7: 6 (1956)
= Ledum glandulosum var. columbianum (Piper) C.L.Hitchc.; Vasc. Pl. Pacif. N. W. [C.L. Hitchcock et al.] 4: 16 (1959)
= Ledum groenlandicum subsp. glandulosum (Nutt.) Á.Löve & D.Löve; Univ. Colorado Stud., Ser. Biol. 17: 25 (1965)
= Rhododendron neoglandulosum Harmaja; Ann. Bot. Fenn. 27: 203 (1990), nom. nov. superfl.
species :
Rhododendron comisteum
Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 11(52-53): 42-45 (1919)
Distribution: China (NW-Yunnan); SE-Tibet
36 CHI TIB
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Taliensia
species :
Rhododendron commonae
F.Först.; Repert. Spec. Nov. Regni Veg. 13: 223 (1914)
Distribution: New Guinea (Irian Jaya, Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron nitens Sleumer; Reinwardtia 5: 162 (1960) (non Hutch. (1936)
= Rhododendron pseudonitens Sleumer; Blumea 11: 124 (1961)
= Rhododendron stonori Sleumer; Reinwardtia 5: 155 (1960)
species :
Rhododendron commutatum
Sleumer; Reinwardtia 5: 201 (1960)
Distribution: Borneo
42 BOR
Remarks: Subgen. Rhododendron
species :
Rhododendron comparabile
Sleumer; Reinwardtia 5: 208 (1960)
Distribution: New Guinea (Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron complexum
Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 9: 222 (1916)
Distribution: China (W-Sichuan, NW-Yunnan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Lapponica
species :
Rhododendron comptum
C.H.Wright; Bull. Misc. Inform. Kew 103 (1899)
Distribution: New Guinea (Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
variant :
var. trichodes
Sleumer; Reinwardtia 5: 111 (1960)
Distribution: New Guinea (Papua New Guinea)
42 NWG
species :
Rhododendron concinnoides
Hutch. & Kingdon-Ward; Spec. Rhododendron, 780 (1930), et Notes Bot. Gard. Edinb. 16: 180 (1931), latine
Distribution: India (Arunachal Pradesh)
40 IND
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Monantha
species :
Rhododendron concinnum
Hemsl.; J. Linn. Soc., Bot. 26: 21 (1889)
Distribution: China (Shaanxi, Henan, Hubei. Guizhou, Sichuan, Yunnan); Tibet
36 CHI TIB
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Triflora
Synonyms: hidden
= Azalea concinna (Hemsl.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron apiculatum Rehder & E.H.Wilson; Pl. Wilson. [Sargent] 1(3): 520 (1913)
= Rhododendron atroviride Dunn; J. Linn. Soc., Bot. 39: 484 (1911), nom. illeg.
= Rhododendron benthamianum Hemsl.; Bull. Misc. Inform. Kew 1907, 319 (1907)
= Rhododendron concinnum var. benthamianum (Hemsl.) Davidian; Rhododendron Camellia Year Book 17: 194 (1963)
= Rhododendron concinnum var. laetevirens Cowan; Bot. Mag. 147: t. 8912 (1938)
= Rhododendron concinnum var. lepidanthum (Rehder & E.H.Wilson) Rehder; J. Arnold Arbor. 20: 424 (1939)
= Rhododendron concinnum var. pseudoyanthinum (Balf.f. ex Hutch.) Davidian; Rhododendron Year Book 17: 194 (1963), nom. superfl.
= Rhododendron coombense Hemsl.; Bot. Mag. 135: t. 8280 (1909)
= Rhododendron hutchinsonianum W.P.Fang; Acta Phytotax. Sin. 2: 83 (1953)
= Rhododendron pseudoyanthinum Balf.f. ex Hutch.; Spec. Rhododendron, 783 (1930)
= Rhododendron yanthinum Bureau & Franch.; J. Bot. [Morot] 5: 94 (1891)
= Rhododendron yanthinum var. lepidanthum Rehder & E.H.Wilson; Sarg., Pl. Wilson. [Sargent] 1: 519 (1913)
species :
Rhododendron coriaceum
Franch.; J. Bot. [Morot] 12(15-16): 258-259 (1898)
Distribution: China (NW-Yunnan); SE-Tibet
36 CHI TIB
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Falconera
Synonyms: hidden
= Rhododendron foveolatum Rehder & E.H.Wilson; Pl. Wilson. [Sargent] 1: 537 (1913)
species :
Rhododendron cornu-bovis
Sleumer; Reinwardtia 5: 152 (1960)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron correoides
J.J.Sm.; Meded. Herb. Leid. No. 25, 2 (1915)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron coniferum Wernham; Trans. Linn. Soc. London, Bot. 9: 97 (1916)
species :
Rhododendron coryanum
Tagg & Forrest; Notes Roy. Bot. Gard. Edinburgh 15(72): 99-103 (1926)
Distribution: China (NW-Yunnan); SE-Tibet
36 CHI TIB
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Argyrophylla
species :
Rhododendron costatum
S.S.Ying; New Taxa New Names 7: 297 (2024)
Distribution: Taiwan
38 TAI
Remarks: provisionally accepted name
species :
Rhododendron cowanianum
Davidian; Notes Bot. Gard. Edinb. 21: 99 (1952)
Distribution: Nepal
40 NEP
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Lepidota
species :
Rhododendron coxianum
Davidian; Rhododendrons (London), 1972: 51 (1972)
Distribution: NE-India (Assam)
40 IND
Remarks: status doubtful
species :
Rhododendron crassifolium
Stapf; Trans. Linn. Soc. London Ser. 2, 4: 195 (1894)
Distribution: Borneo
42 BOR
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron brevitubum J.J.Sm.; Ic. Bogor. t. 381 (1914)
= Rhododendron crassinervium Ridl.; J. Straits Branch Roy. Asiat. Soc. 63: 61 (1912)
variant :
var. pseudomurudense
(Sleumer) Argent; Rhododendrons subgen. Vireya, ed. 2: 305 (2015)
Distribution: EC-Borneo
42 BOR
Synonyms: hidden
= Rhododendron murudense Merr.; Sarawak Mus. J. 3: 542 (1928), non Merr.
= Rhododendron pseudomurudense Sleumer; Reinwardtia 5: 189 (1960)
species :
Rhododendron crassimedium
P.C.Tam; Bull. Bot. Res., Harbin 2(1): 96-97 (1982)
Distribution: China (S-Hunan, SW-Jiangxi)
36 CHI
species :
Rhododendron crassistylum
M.Y.He; J. Sichuan Univ., Nat. Sci. Ed. 24(1): 83, f. 1 (1987)
Distribution: China (SW-Jiangxi)
36 CHI
species :
Rhododendron crassum
Franch.; Bull. Soc. Bot. Fr. 34: 282 (1887)
Distribution: China (Yunnan); S-Tibet; N-India (Manipur, Nagaland, Arunachal Pradesh); NE-Myanmar (Chin, Kachin); Thailand; Laos; N-Vietnam
36 CHI TIB 40 IND 41 LAO MYA THA VIE
Synonyms: hidden
= Azalea crassa (Franch.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron chapaense Dop; Fl. Indo-Chine [P.H.Lecomte et al.] 3: 743 (1930)
= Rhododendron maddenii subsp. crassum (Franch.) Cullen; Notes Roy. Bot. Gard. Edinburgh 36(1): 107 (1978)
= Rhododendron maddenii var. obtusifolium Hutch.; Bot. Mag. 134: t. 8212 (1908)
= Rhododendron manipurense Balf.f. & G.Watt; Notes Roy. Bot. Gard. Edinburgh 10: 119 (1917)
= Rhododendron odoriferum Hutch.; Gard. Chron. 1927, Ser. 3, 82: 30 (1927)
species :
Rhododendron cravenii
Danet; Rhododendron (Melbourne) 55: 19 (2015)
Distribution: New Guinea (Irian Jaya)
42 NWG
species :
Rhododendron crenulatum
Hutch. ex Sleumer; Blumea, Suppl. 4, 44 (1958)
Distribution: Laos; Vietnam
41 LAO VIE
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Maddenia
species :
Rhododendron cretaceum
P.C.Tam; Survey Genus Rhododendron S. China 60, 108, f. 9 (1983)
Distribution: China (N-Guangdong)
36 CHI
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
species :
Rhododendron crinigerum
Franch.; J. Bot. [Morot] 12(15-16): 260 (1898)
Distribution: China (NW-Sichuan, NW-Yunnan); SE-Tibet; India (Arunachal Pradesh); Myanmar (Shan)
36 CHI TIB 40 IND 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Glischra
Synonyms: hidden
= Rhododendron ixeuticum Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 9(44-45): 240-241 (1916)
variant :
var. euadenium
Tagg & Forrest; Notes Roy. Bot. Gard. Edinburgh 16(79): 190 (1931)
Distribution: China (NW-Yunnan)
36 CHI
species :
Rhododendron cruttwellii
Sleumer; Reinwardtia 5: 120 (1960)
Distribution: New Guinea (Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron cuffeanum
Craib ex Hutch.; Bot. Mag. t. 8721 (1917)
Distribution: Myanmar (Chin, Kachin)
41 MYA
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Maddenia
species :
Rhododendron culminicola
F.Muell.; Trans. Roy. Soc. Vict. N. S. 1(2): 23 (1889)
Distribution: New Guinea (Irian Jaya, Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron convexum Sleumer; Reinwardtia 5: 218 (1960)
= Rhododendron gregarium Sleumer; Reinwardtia 5: 221 (1960)
= Rhododendron keysseri F.Först.; Repert. Spec. Nov. Regni Veg. 13: 223 (1914)
= Rhododendron nodosum C.H.Wright; Bull. Misc. Inform. Kew 1899: 103 (1899)
species :
Rhododendron cumberlandense
E.L.Braun; Rhodora 43: 33 (1941)
Name: Cumberland rhododendron
Distribution: USA (Alabama, Georgia, Kentucky, North Carolina, South Carolina, Tennessee, Virginia)
78 USA
Remarks: Subgen. Pentanthera, Sect. Pentanthera
Synonyms: hidden
= Azalea cumberlandensis (E.L.Braun) H.F.Copel.; Amer. Midl. Naturalist 30: 595 (1943)
species :
Rhododendron cuneatum
W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 8: 200 (1914)
Distribution: China (SW-Sichuan, NW-Yunnan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Lapponica
Synonyms: hidden
= Rhododendron calcicola Millais; Rhododendrons, 132, 150 (1917)
= Rhododendron cheilanthum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 11: 32 (1919)
= Rhododendron ravum Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 9: 270 (1916)
= Rhododendron sclerocladum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 11: 133 (1919)
species :
Rhododendron cuneifolium
Stapf; Trans. Linn. Soc. London Ser. 2, 4: 198 (1894)
Distribution: Borneo; Sulawesi
42 BOR SUL
Synonyms: hidden
= Rhododendron cinnamomeum var. cunninghamii Paxton; Paxton´s Fl. Gard. 1: 81 (1850)
= Rhododendron quadrasianum var. cuneifolium (Stapf) H.F.Copel.
variant :
var. elongatum
Argent; Rhododendrons subgen. Vireya, ed. 2. 54 (2015)
Distribution: Borneo (Sabah)
42 BOR
variant :
var. microcarpum
Argent, A.Lamb & Phillipps; Notes Roy. Bot. Gard. Edinburgh 42(1): 118 (1984), as ´microcapum´
Distribution: Borneo (Sabah)
42 BOR
species :
Rhododendron curviflorum
J.J.Sm.; Bull. Jard. Bot. Buitenz., Ser. 2, 8: 50 (1912)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron cuspidellum
Sleumer; Reinwardtia 5: 200 (1960)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron cyanocarpum
(Franch.) W.W.Sm.; Trans. Bot. Soc. Edinburgh 26(3): 274-277 (1914)
Distribution: China (W-Yunnan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Thomsonia
Synonyms: hidden
= Rhododendron cyanocarpum var. eriphyllum (Balf.f. & W.W.Sm.) Tagg; Spec. Rhododendron 738 (1930)
= Rhododendron eriphyllum Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 10: 98 (1917)
= Rhododendron hedythamnum var. eglandulosum Hand.-Mazz.; Anz. Akad. Wiss. Wien, Math.-Naturwiss. Kl. 19: 3 (1923)
= Rhododendron thomsonii var. cyanocarpum Franch.; J. Bot. [Morot] 9: 389 (1895)
species :
Rhododendron cyrtophyllum
Wernham; Trans. Linn. Soc. London, Bot. 9: 97 (1916)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron dachengense
G.Z.Li; Acta Bot. Yunnan. 23: 287 (2001)
Distribution: China (EC-Guangxi)
36 CHI
species :
Rhododendron dalhousiae
Hook.f.; Rhod. Sikkim-Himal. 2. t. 1 (1849)
Distribution: Tibet; W-Nepal; Bhutan; N-India (Arunachal Pradesh, Sikkim, West Bengal); Bangladesh
36 TIB 40 BAN BHU IND NEP
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Maddenia
Synonyms: hidden
= Azalea macrocarpa (Griff.) Kuntze; Revis. Gen. Pl. 2: 386 (1891)
= Rhododendron dalhousieae var. pulchellum Van Geert; Nursery Cat. (Auguste Van Geert) 78: 18 (1879)
= Rhododendron lindleyanum Lavallée; Arb. Segrez. 156 (1877)
= Rhododendron macrocarpos Griff.; Itin. Pl. Khasyah Mts. 138 (1848)
= Rhododendron macrocarpum Van Houtte; J. Gén. Hort. 12: 83 (1857)
variant :
var. rhabdotum
(Balf.f. & Cooper) Cullen; Notes Roy. Bot. Gard. Edinburgh 36(1): 107 (1978)
Distribution: S-Tibet; Bhutan; India (Arunachal Pradesh)
36 TIB 40 BHU IND
Synonyms: hidden
= Rhododendron rhabdotum Balf.f. & Cooper; Notes Roy. Bot. Gard. Edinburgh 10: 141 (1917)
variant :
var. tashii
(Pradhan & Lachungpa) D.Bhattach.; Fasc. Fl. India 25: 51 (2014)
Distribution: N-India (Sikkim)
40 IND
Synonyms: hidden
= Rhododendron dalhousiae subsp. tashii Pradhan & Lachungpa; Sikkim-Himalayan Rhododendrons 30 (1990)
species :
Rhododendron danbaense
L.C.Hu; Bull. Bot. Res., Harbin 6(1): 155-156, pl. (1986)
Distribution: China (W-Sichuan)
36 CHI
species :
Rhododendron dasycladoides
Hand.-Mazz.; Symb. Sin. 7(4): 781-782 (1936)
Distribution: China (SW-Sichuan, NW-Yunnan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Selensia
species :
Rhododendron dasypetalum
Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 11: 45 (1919)
Distribution: China (NW-Yunnan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Lapponica
species :
Rhododendron datiandingense
Z.J.Feng; J. S. China Agric. Univ. 17(1): 59-60, f. 1 (1996)
Distribution: China (W-Guangdong)
36 CHI
species :
Rhododendron dauricum
L.; Sp. Pl. [Linnaeus] 392 (1753)
Distribution: Siberia (Altai, Buryatia, Chita, Irkutsk, Krasnoyarsk, Tuva, W-Siberia, Yakutia); Russian Far East (Amur, Khabarovsk, Primorye); China (Heilongjiang, Nei Mongol, Jilin); Mongolia; North Korea; South Korea; Japan (Hokkaido)
30 SIB 31 RFE 36 CHI 37 MON 38 JAP KOR NKO
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Rhodorastra
Synonyms: hidden
= Azalea dahurica (L.) K.Koch; Dendrologie 3 (1872)
= Azalea daurica (L.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron atrovirens (Ker Gawl.) Tagg; Stevenson, Spec. Rhododendron 851 (1930), nom. illeg.
= Rhododendron dauricum f. albiflorum (Turcz.) C.F.Fang; Clav. Pl. Chin. Bor.-Or., ed. 2 (ed. P. Y. Fu) 496 (1995), isonym
= Rhododendron dauricum f. albiflorum (Turcz.) Y.C.Zhu; Pl. Medik. Chinae Bor.-orient. (ed. Zhu You Chang): 864 (1989)
= Rhododendron dauricum subsp. ledebourii (Pojark.) Alexandrova & P.A.Schmidt; Betr. Gehölzk. 67 (1981 publ. 1982)
= Rhododendron dauricum var. atrovirens Ker Gawl.; Bot. Reg. 3: t. 194 (1817)
= Rhododendron dauricum var. pallidum Regel; Gartenflora 11: 377 (1862)
= Rhododendron dauricum var. roseum DC.; Prodr. [A. P. de Candolle] 7: 757 (1839)
= Rhododendron dauricum var. sempervirens Sims; Bot. Mag. 44: t. 1888 (1817)
= Rhododendron ledebourii Pojark.; Fl. URSS 18: 722 (1952)
species :
Rhododendron davidi
Franch.; Bull. Soc. Bot. France 33: 230-231 (1886)
Distribution: China (W-Sichuan, NE-Yunnan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Fortunea
species :
Rhododendron davidsonianum
Rehder & E.H.Wilson; Sarg., Pl. Wilson. [Sargent] 1: 515 (1913)
Distribution: China (W-Sichuan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Triflora
Synonyms: hidden
= Rhododendron charianthum Hutch.; Bot. Mag. t. 8665 (1916)
species :
Rhododendron dawuense
H.P.Yang; Bull. Bot. Res. North-East. Forest. Inst. 3(2): 98 (1983)
Distribution: China (NW-Sichuan)
36 CHI
species :
Rhododendron dayaoshanense
L.M.Gao & D.Z.Li; Novon 13: 189 (2003)
Distribution: China (E-Guangxi)
36 CHI
species :
Rhododendron dayiense
M.Y.He; Acta Phytotax. Sin. 35(1): 63-66, f. 1 (1997)
Distribution: China (Sichuan)
36 CHI
species :
Rhododendron declivatum
Ching & H.P.Yang; Bull. Bot. Res. North-East. Forest. Inst. 3(2): 89 (1983)
Distribution: China (SW-Shaanxi)
36 CHI
species :
Rhododendron decorum
Franch.; Bull. Soc. Bot. Fr. 33: 230 (1886); et in Nouv. Arch. Mus. Paris, Ser. 2(10): 45 (1888)
subspecies :
subsp. decorum
Distribution: China (SW-Sichuan, W-Guizhou, NW-Yunnan); SE-Tibet; NE-Myanmar (Kachin); Laos
36 CHI TIB 41 LAO MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Fortunea
Synonyms: hidden
= Azalea decora (Franch.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron franchetianum H.Lév.; Bull. Soc. Agric. Sarthe 39: 45 (1903)
= Rhododendron giraudiasii H.Lév.; Repert. Spec. Nov. Regni Veg. 13(368-369): 340 (1914)
= Rhododendron spooneri Hemsl. & E.H.Wilson; Bull. Misc. Inform. Kew 1910(4): 110-111 (1910)
subspecies :
subsp. cordatum
W.K.Hu; Bull. Bot. Res., Harbin 8(3): 58, pl. 9 (1988)
Distribution: China (Yunnan)
36 CHI
subspecies :
subsp. diaprepes
(Balf.f. & W.W.Sm.) T.L.Ming; Acta Bot. Yunnan. 6(2): 147 (1984)
Distribution: China (SW-Sichuan, W-Yunnan); Myanmar (Kachin); Vietnam
36 CHI 41 MYA VIE
Synonyms: hidden
= Hymenanthes diaprepes (Balf.f. & W.W.Sm.) H.F.Copel.; Amer. Midl. Naturalist 30: 614 (1943)
= Rhododendron diaprepes Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 10(47-48): 100-101 (1917)
= Rhododendron rasile Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 10(47-48): 139-141 (1917)
subspecies :
subsp. parvistigmaticum
W.K.Hu; Bull. Bot. Res., Harbin 8(3): 57-58, pl. 8 (1988)
Distribution: China (SW-Sichuan)
36 CHI
species :
Rhododendron degronianum
Carrière; Rev. Hortic. 368 (1869)
Distribution: Japan (Honshu)
38 JAP
Synonyms: hidden
= Azalea degroniana (Carrière) Makino; J. Jap. Bot. 5: No. 8, sub tab. (1928)
= Rhododendron degronianum f. leucanthum (Makino) H.Hara; Enum. Spermatophytarum Japon. 1: 30 (1948)
= Rhododendron hymenanthes var. pentamerum (Maxim.) Makino; Bot. Mag. (Tokyo) 16: 33 (1902)
= Rhododendron japonicum var. pentamerum (Maxim.) Hutch.; Bot. Mag. 137: t. 8403 (1911)
= Rhododendron metternichii subsp. pentamerum (Maxim.) Sugim.; New Keys Jap. Trees 470 (1961)
= Rhododendron metternichii var. degronianum (Carrière) Makino; Ill. Fl. Nippon 250 (1940)
= Rhododendron metternichii var. pentamerum Maxim.; Mém. Acad. Imp. Sci. Saint Pétersbourg, Sér. 7, 16(9): 22 (1870)
= Rhododendron nakaii Komatsu; Icon. Pl. Koisikav. 1: 145 (1913)
= Rhododendron pentamerum (Maxim.) Matsum. & Nakai; Cat. Sem. Hort. Bot. Univ. Imp. Tokyo, 1915-16, 24 (1916)
variant :
var. amagianum
(T.Yamaz.) T.Yamaz.; Fl. Japan, 3a: 42 (1993)
Distribution: Japan (Honshu)
38 JAP
Synonyms: hidden
= Rhododendron metternichii f. amagianum T.Yamaz.; J. Jap. Bot. 56(11): 365 (1981)
= Rhododendron degronianum f. amagianum (T.Yamaz.) H.Hara; J. Jap. Bot. 61(8): 246 (1986)
species :
Rhododendron dekatanum
Cowan; Notes Bot. Gard. Edinb. 19: 226 (1937)
Distribution: S-Tibet; India (Arunachal Pradesh)
36 TIB 40 IND
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Boothia
species :
Rhododendron delavayi
Franch.; Bull. Soc. Bot. France 33: 231 (1886)
Distribution: China (NW-Guangxi, W-Guizhou, Yunnan, SW-Sichuan); Bhutan; India (Arunachal Pradesh, Manipur, Mizoram, Meghalaya, Nagaland); Myanmar (Chin, Kachin); N-Thailand; N-Vietnam
36 CHI 40 BHU IND 41 MYA THA VIE
Synonyms: hidden
= Azalea delavayi (Franch.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron arboreum subsp. delavayi (Franch.) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 37(2): 328 (1979)
= Rhododendron pilovittatum Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 10(47-48): 134-135 (1917)
variant :
var. adenostylum
Xiang Chen & Jia Y.Huang; Ann. Bot. Fenn. 47(5): 401 (2010)
Distribution: China (Guizhou)
36 CHI
variant :
var. peramoenum
(Balf.f. & Forrest) T.L.Ming; Acta Bot. Yunnan. 6(2): 148 (1984)
Distribution: China (W-Guizhou, W-Yunnan); SE-Tibet; NE-India (Arunachal Pradesh); Myanmar
36 CHI TIB 40 IND 41 MYA
Synonyms: hidden
= Rhododendron arboreum var. peramoenum (Balf.f. & Forrest) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 37(2): 328 (1979)
= Rhododendron peramoenum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 56 (1920)
variant :
var. pilostylum
K.M.Feng; Acta Bot. Yunnan. 5(3): 265 (1983)
Distribution: China (SE-Yunnan)
36 CHI
species :
Rhododendron delicatulum
Sleumer; Reinwardtia 5: 78 (1960)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
variant :
var. lanceolatoides
Sleumer; Reinwardtia 5: 78 (1960)
Distribution: New Guinea (Irian Jaya)
42 NWG
species :
Rhododendron dendricola
Hutch.; Notes Roy. Bot. Gard. Edinburgh 12: 60 (1919)
Distribution: China (NW-Yunnan); SE-Tibet; NE-India (Arunachal Pradesh); N-Myanmar (Kachin, Sagaing)
36 CHI TIB 40 IND 41 MYA
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Maddenia
Synonyms: hidden
= Rhododendron atentsiense Hand.-Mazz.; Anz. Akad. Wiss. Wien, Math.-Naturwiss. Kl. 58: 152 (1921)
= Rhododendron notatum Hutch.; Spec. Rhododendron, 469 (1930), et Notes Bot. Gard. Edinb. 16: 177 (1931), latine
species :
Rhododendron dendrocharis
Franch.; Bull. Soc. Bot. Fr. 33: 233 (1886); et in Nouv. Arch. Mus. Paris. Ser. 2(10): 51, t. 13, fig. a. (1887 publ. 1888)
Distribution: China (W-Sichuan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Moupinensia
species :
Rhododendron densifolium
K.M.Feng; Acta Bot. Yunnan. 5(3): 266 (1983)
Distribution: China (SE-Yunnan); Vietnam
36 CHI 41 VIE
species :
Rhododendron denudatum
H.Lév.; Repert. Spec. Nov. Regni Veg. 13(368-369): 339 (1914)
Distribution: China (NW-Guizhou, SW-Sichuan, E-Yunnan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Argyrophylla
Synonyms: hidden
= Rhododendron xanthoneuron H.Lév.; Repert. Spec. Nov. Regni Veg. 13(368-369): 340 (1914)
variant :
var. glabriovarium
Xiang Chen & X.Chen; Nordic J. Bot. 28(4): 498 (2010)
Distribution: China (Guizhou)
36 CHI
species :
Rhododendron detersile
Franch.; J. Bot. [Morot] 12(15-16): 260-261 (1898)
Distribution: China (Shaanxi, NE-Sichuan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Taliensia
species :
Rhododendron detzneranum
Sleumer; Blumea 21(2): 359 (1973)
Distribution: New Guinea (Irian Jaya, Papua New Guinea)
42 NWG
species :
Rhododendron dianthosmum
Sleumer; Blumea 12: 100 (1963)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron dichroanthum
Diels; Notes Roy. Bot. Gard. Edinburgh 5(25): 212-213 (1912), et ex Cowan, Notes Bot. Gard. Edinb. 20: 85 (1940), descr. emend.
subspecies :
subsp. dichroanthum
Distribution: China (W-Yunnan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Neriiflora
subspecies :
subsp. apodectum
(Balf.f. & W.W.Sm.) Cowan; Notes Roy. Bot. Gard. Edinburgh 20(97): 86 (1940)
Distribution: China (W-Yunnan); Myanmar
36 CHI 41 MYA
Synonyms: hidden
= Rhododendron apodectum Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 10(47-48): 83-84 (1917)
= Rhododendron dichroanthum var. apodectum (Balf.f. & W.W.Sm.) T.L.Ming; Acta Bot. Yunnan. 6(2): 168 (1984)
= Rhododendron jangtzowense Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(65): 271-272 (1922)
= Rhododendron liratum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(65): 274 (1922)
subspecies :
subsp. scyphocalyx
(Balf.f. & Forrest) Cowan; Notes Roy. Bot. Gard. Edinburgh 20(97): 88 (1940)
Distribution: China (NW-Yunnan); Myanmar (Kachin)
36 CHI 41 MYA
Synonyms: hidden
= Rhododendron dichroanthum subsp. herpesticum (Balf.f. & Kingdon-Ward) Cowan; Notes Roy. Bot. Gard. Edinburgh 20(97): 87 (1940)
= Rhododendron dichroanthum var. scyphocalyx (Balf.f. & Forrest) T.L.Ming; Acta Bot. Yunnan. 6(2): 170 (1984)
= Rhododendron herpesticum Balf.f. & Kingdon-Ward; Notes Roy. Bot. Gard. Edinburgh 10(47-48): 114-116 (1917)
= Rhododendron scyphocalyx Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(65): 291-292 (1922)
= Rhododendron torquatum Balf.f. & Farrer; Notes Roy. Bot. Gard. Edinburgh 13: 303 (1922)
subspecies :
subsp. septentrionale
Cowan; Notes Roy. Bot. Gard. Edinburgh 20(97): 87 (1940)
Distribution: China (W-Yunnan); NE-Myanmar
36 CHI 41 MYA
Synonyms: hidden
= Rhododendron dichroanthum var. septentrionale (Cowan) T.L.Ming; Acta Bot. Yunnan. 6: 170 (1984)
= Rhododendron scyphocalyx var. septentrionale Tagg ex Davidian; Rhododendron Species, 2 (Ser. Arboreum-Lacteum): 308 (1989)
species :
Rhododendron dielsianum
Schltr.; Bot. Jahrb. Syst. 55: 150 (1918)
Distribution: New Guinea (Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron laureola Schltr.; Bot. Jahrb. Syst. 55: 151 (1918)
variant :
var. stylotrichum
Sleumer; Reinwardtia 5: 80 (1960)
Distribution: New Guinea (Papua New Guinea)
42 NWG
species :
Rhododendron dignabile
Cowan; Notes Roy. Bot. Gard. Edinburgh 19(94): 241-242 (1937)
Distribution: S-Tibet
36 TIB
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Taliensia
species :
Rhododendron dilatatum
Miq.; Ann. Mus. Bot. Lugduno-Batavi 1: 34 (1863)
subspecies :
subsp. dilatatum
Distribution: Japan (Honshu)
38 JAP
Remarks: Subgen. Tsutsusi, Sect. Brachycalyx
Synonyms: hidden
= Azalea dilatata (Miq.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron decandrum var. pilosum H.Hara; Enum. Spermatophytarum Japon. 1: 29 (1948)
= Rhododendron dilatatum f. hypopilosum Sh.Kurata; Illustr. Forest Trees Japan 3: 124 (1971)
= Rhododendron dilatatum f. inobeanum (Honda) Minamit.; J. Jap. Bot. 94: 216 (2019)
= Rhododendron dilatatum f. leucanthum Sugim.; New Keys Woody Pl. Jap. 377 (1972), nom. illeg.
= Rhododendron dilatatum f. niveum Minamit.; J. Jap. Bot. 93: 91 (2018)
= Rhododendron dilatatum f. pilosum (H.Hara) Minamit.; J. Jap. Bot. 94: 216 (2019)
= Rhododendron inobeanum Honda; Bot. Mag. (Tokyo) 53: 383 (1939)
variant :
var. boreale
Sugim.; New Keys Woody Pl. Jap. 509 (1972)
Distribution: Japan (Hokkaido)
38 JAP
Synonyms: hidden
= Rhododendron hidakanum H.Hara; J. Jap. Bot. 49(12): 353 (1974)
variant :
var. decandrum
Makino; Bot. Mag. (Tokyo) 7: (134) (1893)
Distribution: Japan (Honshu)
38 JAP
Synonyms: hidden
= Rhododendron decandrum (Makino) Makino; J. Jap. Bot. 1: 21 (1917)
= Rhododendron dilatatum f. albiflorum (Honda) Hatus.; Sci. Rep. Yokosuka City Mus. 15: 21 (1969)
= Rhododendron dilatatum f. decandrum (Makino) Minamit.; J. Jap. Bot. 94(4): 216 (2019)
= Rhododendron dilatatum subsp. decandrum (Makino) X.F.Jin & B.Y.Ding; Ann. Missouri Bot. Gard. 97(2): 174 (2010)
variant :
var. lasiocarpum
(H.Hara) T.Yamaz.; Rev. Gen. Rhododendron Japan, Taiwan, Korea & Sakhalin 93 (1996)
Distribution: Japan (Honshu)
38 JAP
Synonyms: hidden
= Rhododendron decandrum f. lasiocarpum H.Hara; Enum. Spermatophytarum Japon. 1: 29 (1948)
= Rhododendron dilatatum f. lasiocarpum (H.Hara) T.Yamaz.; Fl. Japan, 3a: 33 (1993)
variant :
var. nippoense
Minamit.; J. Jap. Bot. 93(2): 88 (2018)
Distribution: Japan
38 JAP
variant :
var. occidentalitosaense
Minamit.; J. Jap. Bot. 93(2): 92 (2018)
Distribution: Japan
38 JAP
variant :
var. ookuemontanum
Minamit.; J. Jap. Bot. 93(2): 89 (2018)
Distribution: Japan
38 JAP
Synonyms: hidden
= Rhododendron dilatatum f. ookuemontanum Minamit.; J. Jap. Bot. 93(2): 89 (2018)
subspecies :
subsp. arborescens
Minamit.; J. Jap. Bot. 93(2): 92 (2018)
Distribution: Japan
38 JAP
subspecies :
subsp. satsumense
(T.Yamaz.) Minamit.; J. Jap. Bot. 93(2): 88 (2018)
Distribution: Japan (Honshu)
38 JAP
Synonyms: hidden
= Rhododendron dilatatum var. satsumense T.Yamaz.; J. Jap. Bot. 56(11): 363 (1981)
species :
Rhododendron dimitrum
Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 11(52-53): 50-54 (1919)
Distribution: China (W-Yunnan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. unknown
species :
Rhododendron discolor
Franch.; J. Bot. [Morot] 9(21): 391 (1895)
Distribution: China (Anhui, Chongqing, Guangxi, Guizhou, Hubei, Hunan, Jiangxi, Shaanxi, Sichuan, Yunnan, Zhejiang)
36 CHI
Synonyms: hidden
= Rhododendron discolor f. carneum E.H.Wilson; J. Arnold Arbor. 5: 97 (1924)
= Rhododendron fortunei subsp. discolor (Franch.) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 37(2): 330 (1979)
= Rhododendron fortunei var. houlstonii (Hemsl. & E.H.Wilson) Rehder & E.H.Wilson; Sarg., Pl. Wilson. [Sargent] 1: 541 (1913)
= Rhododendron fortunei var. kwangfuense (Chun & W.P.Fang) G.Z.Li; Guihaia 15(3): 195 (1995)
= Rhododendron houlstonii Hemsl. & E.H.Wilson; Bull. Misc. Inform. Kew 1910(4): 110 (1910)
= Rhododendron kwangfuense Chun & W.P.Fang; Acta Phytotax. Sin. 6(2): 170-171, pl. 41, f. 2 (1957)
= Rhododendron mandarinorum Diels; Bot. Jahrb. Syst. 29(3-4): 510-511 (1900)
species :
Rhododendron disterigmoides
Sleumer; Reinwardtia 5: 140 (1960)
subspecies :
subsp. disterigmoides
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
subspecies :
subsp. astromontium
Argent; Folia Malaysiana 4(2): 125 (2003)
Distribution: New Guinea (Papua New Guinea)
42 NWG
species :
Rhododendron diversipilosum
(Nakai) Harmaja; Ann. Bot. Fenn. 35(4): 263 (1998 publ. 1999)
Distribution: Russian Far East (Amur, Khabarovsk, Kuril Isl., Primorye, Sakhalin); Japan (Hokkaido)
31 RFE 38 JAP
Synonyms: hidden
= Ledum palustre f. diversiplosum (Nakai) Makino & Tanaka; Man. Fl. Nippon 421 (1927)
= Ledum palustre f. yesoense (Nakai) Makino & Tanaka; Man. Fl. Nippon 421 (1927)
= Ledum palustre subsp. diversipilosum (Nakai) H.Hara; J. Fac. Sci. Univ. Tokyo, sect. III 7: 351 (1956)
= Ledum palustre var. diversipilosum Nakai; Bot. Mag. (Tokyo) 31: 102 (1917)
= Ledum palustre var. nipponicum Nakai; Nakai & G. Koidz., Trees Shrubs Japan 12 (1922)
= Ledum palustre var. yesoense Nakai; Nakai & G. Koidz., Trees Shrubs Japan 13 (1922)
species :
Rhododendron dumicola
Tagg & Forrest; Notes Roy. Bot. Gard. Edinburgh 16(79): 190-191 (1931)
Distribution: China (NW-Yunnan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Taliensia
species :
Rhododendron durionifolium
Becc.; Malesia 1: 202 (1878)
subspecies :
subsp. durionifolium
Distribution: Borneo
42 BOR
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron mjoebergii Merr.; Sarawak Mus. J. 3: 542 (1928)
subspecies :
subsp. sabahense
Argent, A.Lamb & Phillipps; Notes Roy. Bot. Gard. Edinburgh 42(1): 119 (1984)
Distribution: Borneo (Sabah)
42 BOR
species :
Rhododendron dutartrei
Danet; Adansonia 29(1): 108 (2007)
Distribution: New Guinea (Irian Jaya)
42 NWG
species :
Rhododendron eastmanii
Kron & Creel; Novon 9(3): 377 (1999)
Name: Santee azalea
Distribution: USA (South Carolina)
78 USA
species :
Rhododendron ebianense
M.Y.Fang; Rhododendron Notes Rec. 2: 23 (1985), et Acta Phytotax. Sin. 30(6): 553 (1992)
Distribution: China (SC-Sichuan)
36 CHI
species :
Rhododendron eclecteum
Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 12(57-58): 105-108 (1920)
Distribution: China (SW-Sichuan, NW-Yunnan); SE-Tibet; NE-India (Arunachal Pradesh); NE-Myanmar
36 CHI TIB 40 IND 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Thomsonia
Synonyms: hidden
= Rhododendron brachyandrum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 32 (1920)
= Rhododendron eclecteum var. brachyandrum (Balf.f. & Forrest) Cowan & Davidian; Rhododendron Year Book 6: 169 (1951)
variant :
var. bellatulum
Balf.f. ex Tagg; Spec. Rhododendron 739 (1930)
Distribution: China (NW-Yunnan); SE-Tibet; Myanmar (Kachin)
36 CHI TIB 41 MYA
Remarks: possible hybrid between Rhododendron eclecteum and R. selense
species :
Rhododendron edanoi
Merr. & Quisumb.; Philipp. J. Sci. 82: 333 (1954)
subspecies :
subsp. edanoi
Distribution: Palawan
42 PLW
Remarks: Subgen. Rhododendron
subspecies :
subsp. pneumonanthum
(Sleumer) Argent; Gard. Bull. Singapore 56(1-2): 93 (2004)
Distribution: Borneo
42 BOR
Synonyms: hidden
= Rhododendron pneumonanthum Sleumer; Reinwardtia 5: 132 (1960)
species :
Rhododendron edgeworthii
Hook.f.; Rhod. Sikkim-Himal. 2. t. 21 (1849)
Distribution: China (SW-Sichuan, Yunnan); SE-Tibet; Bhutan; India (Sikkim, West Bengal, Arunachal Pradesh); Myanmar (Kachin)
36 CHI TIB 40 BHU IND 41 MYA
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Edgeworthia
Synonyms: hidden
= Azalea bullata (Franch.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Azalea edgeworthii (Hook.f.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron bullatum Franch.; Bull. Soc. Bot. Fr. 34: 281 (1887)
= Rhododendron sciaphilum Balf.f. & Kingdon-Ward; Notes Roy. Bot. Gard. Edinburgh 10: 146 (1917)
species :
Rhododendron eheinense
M.Y.He & Z.J.Zhao; J. Sichuan Univ., Nat. Sci. Ed. 32(4): 477 (1995)
Distribution: China (Sichuan)
36 CHI
species :
Rhododendron elegantulum
Tagg & Forrest; Notes Roy. Bot. Gard. Edinburgh 15(75): 311-312 (1927)
Distribution: China (SW-Sichuan, NW-Yunnan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Taliensia
species :
Rhododendron elliottii
G.Watt ex Lace & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 8: 214 (1914), descr. ampl.
Distribution: India (Nagaland)
40 IND
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Parishia
species :
Rhododendron emarginatum
Hemsl. & E.H.Wilson; Bull. Misc. Inform. Kew 118 (1910)
Distribution: China (Guangxi, Guizhou, SE-Yunnan); Laos; Vietnam
36 CHI 41 LAO VIE
Remarks: Subgen. Rhododendron, Sect. Vireya
Synonyms: hidden
= Rhododendron emarginatum var. eriocarpum K.M.Feng; Acta Bot. Yunnan. 5(3): 268 (1983)
= Rhododendron euonymifolium H.Lév.; Repert. Spec. Nov. Regni Veg. 12: 103 (1913)
= Rhododendron leiboense Z.J.Zhao; Bull. Bot. Res., Harbin 7(3): 57 (1987)
= Rhododendron maguanense K.M.Feng; Acta Bot. Yunnan. 5: 268 (1983)
= Rhododendron poilanei Dop; Fl. Indo-Chine [P.H.Lecomte et al.] 3: 739 (1930)
species :
Rhododendron englerianum
Koord.; Nova Guinea 8: 186 (1909)
Distribution: New Guinea (Irian Jaya, Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron erastum
Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 11(52-53): 60-62 (1919)
Distribution: China (NW-Yunnan); SE-Tibet
36 CHI TIB
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Neriiflora
Synonyms: hidden
= Rhododendron porphyrophyllum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 11(52-53): 108-110 (1919)
= Rhododendron serpens Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 11(52-53): 135-137 (1919)
species :
Rhododendron ericoides
H.Low ex Hook.f.; Hooker´s Icon. Pl., t. 887 (1852)
Distribution: N-Borneo
42 BOR
Remarks: Subgen. Rhododendron
species :
Rhododendron eriobotryoides
Xiang Chen & Jia Y.Huang; J. Trop. Subtrop. Bot. 18(3): 260 (2010)
Distribution: China (Guizhou)
36 CHI
species :
Rhododendron eriocarpum
(Hayata) Nakai; Nakai & Koidz. Trees & Shrubs Japan Proper, ed. 1, 97 (1922)
Distribution: Japan (Kyushu)
38 JAP
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
Synonyms: hidden
= Rhododendron indicum var. eriocarpum Hayata; Icon. Pl. Formosan. 3: 134 (1913)
= Rhododendron indicum var. tamurae Makino; Bot. Mag. (Tokyo) 18: 102 (1904)
= Rhododendron tamurae (Makino) Masam.; Prelim. Rep. Veg. Yakus. 106 (1929)
variant :
var. tawadae
Ohwi; Bull. Nat. Sci. Mag. Tokyo 34: 4 (1954)
Distribution: Ryukyu Isl.
38 NNS
Synonyms: hidden
= Rhododendron simsii var. tawadae (Ohwi) Hatus.; J. Geobot. 7: 21 (1958)
= Rhododendron tawadae (Ohwi) Ohwi; J. Jap. Bot. 29: 369 (1954)
species :
Rhododendron erosipetalum
J.J.Sm.; Nova Guinea 18: 91 (1936)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron erosum
Cowan; Notes Roy. Bot. Gard. Edinburgh 19(94): 225-226 (1937)
Distribution: Tibet
36 TIB
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Barbata
species :
Rhododendron esetulosum
Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 42-43 (1920)
Distribution: China (NW-Yunnan); SE-Tibet
36 CHI TIB
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Selensia
Synonyms: hidden
= Rhododendron manopeplum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(65): 275-276 (1922)
species :
Rhododendron euchroum
Balf.f. & Kingdon-Ward; Notes Roy. Bot. Gard. Edinburgh 9(44-45): 228-229 (1916)
Distribution: China (W-Yunnan); NE-Myanmar (Kachin)
36 CHI 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Neriiflora
species :
Rhododendron eudoxum
Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 11(52-53): 62-64 (1919)
Distribution: China (NW-Yunnan); SE-Tibet; NE-India (Arunachal Pradesh)
36 CHI TIB 40 IND
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Neriiflora
Synonyms: hidden
= Rhododendron eudoxum subsp. trichomiscum (Balf.f. & Forrest) Tagg; Spec. Rhododendron 549 (1930)
= Rhododendron fulvastrum subsp. trichomiscum (Balf.f. & Forrest) Cowan; Notes Roy. Bot. Gard. Edinburgh 20(97): 79 (1940)
= Rhododendron fulvastrum subsp. trichophlebium (Balf.f. & Forrest) Cowan; Notes Roy. Bot. Gard. Edinburgh 20(97): 79 (1940)
= Rhododendron temenium subsp. albipetalum Cowan; Notes Roy. Bot. Gard. Edinburgh 20(97): 83 (1940)
= Rhododendron temenium subsp. rhodanthum Cowan; Notes Roy. Bot. Gard. Edinburgh 20(97): 81-82 (1940)
= Rhododendron trichomiscum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 12(57-58): 169-173 (1920)
= Rhododendron trichophlebium Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 62 (1920)
variant :
var. brunneifolium
(Balf.f. & Forrest) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 37(2): 333 (1979)
Distribution: China (NW-Yunnan); SE-Tibet
36 CHI TIB
Synonyms: hidden
= Rhododendron brunneifolium Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 33 (1920)
= Rhododendron eudoxum subsp. brunneifolium (Balf.f. & Forrest) Cowan; Notes Roy. Bot. Gard. Edinburgh 20(97): 77-78 (1940), isonym
= Rhododendron eudoxum subsp. brunneifolium (Balf.f. & Forrest) Tagg; Spec. Rhododendron 549 (1930)
variant :
var. mesopolium
(Balf.f. & Forrest) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 37(2): 333 (1979)
Distribution: China (NW-Yunnan); SE-Tibet
36 CHI TIB
Synonyms: hidden
= Rhododendron asteium Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(65): 235-236 (1922)
= Rhododendron epipastum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(65): 258-259 (1922)
= Rhododendron eudoxum subsp. asteium (Balf.f. & Forrest) Tagg; Spec. Rhododendron 549 (1930)
= Rhododendron eudoxum subsp. epipastum (Balf.f. & Forrest) Tagg; Spec. Rhododendron 549 (1930)
= Rhododendron eudoxum subsp. mesopolium (Balf.f. & Forrest) Tagg; Spec. Rhododendron 549 (1930)
= Rhododendron fulvastrum subsp. epipastum (Balf.f. & Forrest) Cowan; Notes Roy. Bot. Gard. Edinburgh 20(97): 80 (1940)
= Rhododendron fulvastrum subsp. mesopolium (Balf.f. & Forrest) Cowan; Notes Roy. Bot. Gard. Edinburgh 20(97): 79 (1940)
= Rhododendron mesopolium Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 51-52 (1920)
species :
Rhododendron eurysiphon
Tagg & Forrest; Notes Roy. Bot. Gard. Edinburgh 16(79): 191-192 (1931)
Distribution: SE-Tibet; Myanmar (Kachin)
36 TIB 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Thomsonia
species :
Rhododendron evelyneae
Danet; Adansonia 27(2): 270 (2005)
Distribution: New Guinea (Irian Jaya)
42 NWG
species :
Rhododendron exasperatum
Tagg; Stevenson, Spec. Rhododendron 836 (1930), et Notes Roy. Bot. Gard. Edinburgh 16(79): 192-194 (1931)
Distribution: Tibet; NE-India (Arunachal Pradesh); Myanmar (Kachin, Sagaing)
36 TIB 40 IND 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Barbata
species :
Rhododendron excellens
Hemsl. & E.H.Wilson; Bull. Misc. Inform. Kew 113 (1910)
Distribution: China (S-Guizhou, SE-Yunnan); N-Vietnam
36 CHI 41 VIE
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Maddenia
species :
Rhododendron excelsum
A.Chev.; Rev. Bot. Appliq. 9: 255 (1929)
Distribution: C-Vietnam
41 VIE
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Irrorata
species :
Rhododendron extraneum
(Sleumer) Craven; J. Adelaide Bot. Gard. 27(4): 28 (2014)
Distribution: Sumatra
42 SUM
Synonyms: hidden
= Rhododendron brookeanum var. extraneum Sleumer; Reinwardtia 5: 225 (1960)
species :
Rhododendron extrorsum
J.J.Sm.; Nova Guinea 18: 95 (1936)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron exuberans
(Sleumer) Argent; Bot. J. Linn. Soc. 85(1): 12 (1982)
Distribution: Borneo
42 BOR
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron nervulosum var. exuberans Sleumer; Blumea 12: 113 (1963)
species :
Rhododendron eymae
Sleumer; Reinwardtia 5: 74 (1960)
Distribution: Sulawesi
42 SUL
Remarks: Subgen. Rhododendron
species :
Rhododendron faberi
Hemsl.; J. Linn. Soc., Bot. 26(173): 22-23 (1889)
Distribution: China (W-Sichuan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Taliensia
Synonyms: hidden
= Azalea faberi (Hemsl.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron faberioides Balf.f.; Notes Roy. Bot. Gard. Edinburgh 13(61): 44 (1920)
= Rhododendron ochrocalyx Delavay ex Millais; Rhododendrons 160 (1917)
= Rhododendron wuense Balf.f.; Notes Roy. Bot. Gard. Edinburgh 13(61): 64 (1920)
species :
Rhododendron facetum
Balf.f. & Kingdon-Ward; Notes Roy. Bot. Gard. Edinburgh 10: 104 (1917)
Distribution: China (W-Yunnan); NE-Myanmar (Kachin); N-Vietnam
36 CHI 41 MYA VIE
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Parishia
Synonyms: hidden
= Rhododendron eriogynum Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 10(47-48): 101-103 (1917)
species :
Rhododendron facium
D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 36(1): 124 (1978)
Distribution: SE-Tibet
36 TIB
Remarks: status unconfirmed
species :
Rhododendron faithiae
Chun; Sunyatsenia 2(1): 78-80, t. 19 (1934)
Distribution: China (SW-Guangdong, E-Guangxi)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Fortunea
species :
Rhododendron falconeri
Hook.f.; Rhod. Sikkim-Himal. t. 10 (1849)
Distribution: Nepal; Bhutan; N-India (Sikkim, Darjeeling, Arunachal Pradesh); Myanmar (Chin, Kachin)
40 BHU IND NEP 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Falconera
Synonyms: hidden
= Azalea falconeri (Hook.f.) Kuntze; Revis. Gen. Pl. 2: 386 (1891)
= Rhododendron eximium Nutt.; Hooker´s J. Bot. Kew Gard. Misc. 5: 364 (1853)
= Rhododendron falconeri subsp. eximium (Nutt.) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 37: 330 (1979)
= Rhododendron venosum Nutt.; Hooker´s J. Bot. Kew Gard. Misc. 5: 365 (1853)
species :
Rhododendron fallacinum
Sleumer; Reinwardtia 5: 99 (1960)
Distribution: Borneo
42 BOR
Remarks: Subgen. Rhododendron
species :
Rhododendron fangchengense
P.C.Tam; Guihaia 2(2): 71, f. 3 (1982)
Distribution: China (S-Guangxi)
36 CHI
Remarks: status doubtful, not listed in Fl. of China
species :
Rhododendron farinosum
H.Lév.; Repert. Spec. Nov. Regni Veg. 13(368-369): 340. 1914.
Distribution: China (NE-Yunnan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Argyrophylla
species :
Rhododendron farrerae
Sweet; Brit. Fl. Gard. 2: t. 95 (1831)
Distribution: China (Chongqing, Fujian, Guangdong, Guangxi, Hunan, Jiangxi)
36 CHI
Remarks: Subgen. Tsutsusi, Sect. Brachycalyx
Synonyms: hidden
= Azalea farrerae (Sweet) K.Koch; Dendrologie 2(2): 178 (1873)
= Azalea farrerae (Sweet) Kuntze; Revis. Gen. Pl. 2: 387 (1891), isonym
= Azalea squamata Lindl.; J. Hort. Soc. 1: 152 (1849)
= Azalea squamosa (Lindl.) Kuntze; Revis. Gen. Pl. 2: 386 (1891)
= Rhododendron cinereoserratum P.C.Tam; Bull. Bot. Res., Harbin 2(4): 77 (1982), et Survey Genus Rhododendron S. China 95, 28 (1982 publ. 1983)
= Rhododendron farrerae var. leucotrichum Franch.; J. Bot. [Morot] 9: 394 (1895)
species :
Rhododendron fastigiatum
Franch.; Bull. Soc. Bot. Fr. 33: 234 (1886)
Distribution: China (W-Yunnan, NW-Yunnan, SW-Sichuan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Lapponica
Synonyms: hidden
= Azalea fastigiata (Franch.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron nanum H.Lév.; Repert. Spec. Nov. Regni Veg. 12: 285 (1913)
species :
Rhododendron faucium
D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 36(1): 121, 124 (1978)
Distribution: SE-Tibet; NE-India (Arunachal Pradesh)
36 TIB 40 IND
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Thomsonia
species :
Rhododendron feddei
H.Lév.; Repert. Spec. Nov. Regni Veg. 12: 102 (1913)
Distribution: China (Guizhou)
36 CHI
species :
Rhododendron ferrugineum
L.; Sp. Pl. [Linnaeus] 392 (1753)
Name: Rostblättrige Alpenrose (DE)
Distribution: Germany (+Baden-Württemberg, Bayern); Switzerland; Liechtenstein; Austria; N-Spain (Pyrenees); Andorra; France; Italy; Slovenia; Croatia; Serbia; Kosovo; North Macedonia; Albania
11 AUT GER LIE SWI 12 ADO FRA SPA 13 ALB CRO ITA KOS NMA SLV SRB
Remarks: Sect. Rhododendron, subsect. Rhododendron
Synonyms: hidden
= Azalea ferruginea (L.) Kuntze; Revis. Gen. Pl. 2: 386 (1891)
= Chamaerhododendron ferrugineum (L.) Bubani; Fl. Pyren. [Bubani] 2: 5 (1900)
= Plinthochroma ferrugineum (L.) Dulac; Fl. Hautes-Pyrénées 419 (1867)
= Rhododendron ferrugineum f. albiflorum (Thürlings) Braun-Blanq.; 1640 (1926)
= Rhododendron ferrugineum f. albiflorum Rhiner; 220 (1894), nom. inval.
= Rhododendron ferrugineum f. album (D.Don) Zabel; Handb. Laubholzben. [Beissner et al.] [Beissner et al.] 375 (1903)
= Rhododendron ferrugineum f. atrococcineum (Bean) Rehder; Bibliogr. Cult. Trees 509 (1949)
= Rhododendron ferrugineum f. erectum (Millais) Rehder; Bibliogr. Cult. Trees 510 (1949)
= Rhododendron ferrugineum f. plenum Rehder; Bibliogr. Cult. Trees 510 (1949)
= Rhododendron ferrugineum f. variegatum (Bean) Rehder; Bibliogr. Cult. Trees 509 (1949)
= Rhododendron ferrugineum var. albiflorum Brügger; Naturgesch. Beitr. Umg. Chur [Fl. Curiensis] 81 (1874), nom. inval.
= Rhododendron ferrugineum var. albiflorum DC.; Prodr. [A. P. de Candolle] 7: 724 (1839)
= Rhododendron ferrugineum var. album D.Don; Sw., Brit. Fl. Gard., Ser. 2, 3: t. 258 (1835)
= Rhododendron ferrugineum var. atrococcineum Bean; Trees & Shrubs Brit. Isles 2: 355 (1914)
= Rhododendron ferrugineum var. erectum Millais; Rhododendrons 164 (1917)
= Rhododendron ferrugineum var. variegatum Bean; Trees & Shrubs Brit. Isles 2: 355 (1914)
= Rhododendron germanicum var. ferrugineum (L.) Hoppe; Flora (Regensburg) 20: 187 (1837), nom. superfl.
species :
Rhododendron fictolacteum
Balf.f.; Trans. Bot. Soc. Edinburgh 27: 97 (1916)
Distribution: China (SW-Sichuan, NW-Yunnan); SE-Tibet; NE-Myanmar (Kachin)
36 CHI TIB 41 MYA
Synonyms: hidden
= Rhododendron fictolacteum var. miniforme Davidian; Rhododendron Species, 2 (Ser. Arboreum-Lacteum): 308, 170 (1989)
= Rhododendron lacteum var. macrophyllum Franch.; Bull. Soc. Bot. France 34: 280 (1887)
= Rhododendron rex subsp. fictolacteum (Balf.f.) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 37(2): 330 (1979)
species :
Rhododendron flammeum
(Michx.) Sarg.; Rhododendron Soc. Notes 1: 120 (1917)
Name: Piedmont azalea
Distribution: USA (Georgia, South Carolina)
78 USA
Remarks: Subgen. Pentanthera, Sect. Pentanthera
Synonyms: hidden
= Azalea calendulacea var. flammea Michx.; Fl. Bor.-Amer. (Michx.) 1: 151 (1803)
= Azalea coccinea (Aiton) Bosse; Vollst. Handb. Bl.-gärtn. 1: 237 (1829)
= Azalea coccinea C.F.Ludw.; Neue Wilde Baumz. 7 (1783)
= Azalea nudiflora var. coccinea Aiton; Hort. Kew. 1: 202 (1789)
= Azalea nudiflora var. thyrsiflora Gowen ex Lindl.; Bot. Reg. 16: t. 1367 (1830)
= Azalea periclymenoides var. coccinea (Aiton) Pursh; Fl. Amer. Sept. 1: 202 (1813)
= Azalea speciosa var. coccinea (Aiton) DC.; Prodr. [A. P. de Candolle] 7: 717 (1839)
= Azalea speciosa Willd.; Enum. Pl. Suppl. [Willd.] 10 (1814)
= Rhododendron calendulaceum f. speciosum (Willd.) Voss; Vilm. Blumengärtn. ed. 3. 1: 588 (1894)
= Rhododendron calendulaceum var. flammeum (Michx.) Sweet; Hort. Brit., ed. 2: 343 (1830)
= Rhododendron luteum var. flammeum (Michx.) C.K.Schneid.; Ill. Handb. Laubholzk. 2: 500 (1911)
= Rhododendron nudiflorum var. coccineum (Aiton) Sweet; Hort. Brit., ed. 2: 343 (1830)
= Rhododendron speciosum (Willd.) Sweet; Hort. Brit. [Sweet], ed. 2: 343 (1830)
species :
Rhododendron flavantherum
Hutch. & Kingdon-Ward; Spec. Rhododendron, 786 (1930), et Notes Bot. Gard. Edinb. 16: 181 (1931), latine
Distribution: S-Tibet
36 TIB
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Monantha
species :
Rhododendron flavidum
Franch.; J. Bot. [Morot] 9: 395 (1895)
Distribution: China (W-Sichuan, NW-Sichuan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Lapponica
Synonyms: hidden
= Rhododendron primulinum Hemsl.; Gard. Chron. 47: 4 (1910)
variant :
var. psilostylum
Rehder & E.H.Wilson; Pl. Wilson. [Sargent] 1: 513 (1913)
Distribution: China (NW-Sichuan)
36 CHI
Synonyms: hidden
= Rhododendron psilostylum (Rehder & E.H.Wilson) Balf.f.
species :
Rhododendron flavoflorum
T.L.Ming; Acta Bot. Yunnan. 6(2): 153-154, f. 3 (1984)
Distribution: China (SW-Yunnan)
36 CHI
species :
Rhododendron flavoviride
J.J.Sm.; Meded. Herb. Leid. No. 25, 4 (1915)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron fletcherianum
Davidian; R. H. S. Rhododendron & Camellia Year Book 16: 103 (1961)
Distribution: China (NW-Yunnan); SE-Tibet
36 CHI TIB
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Maddenia
species :
Rhododendron fleuryi
Dop ex A.Chev.; Rev. Bot. Appliq. 9: 255 (1929)
Distribution: C-Vietnam
41 VIE
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Maddenia
species :
Rhododendron floccigerum
Franch.; J. Bot. [Morot] 12(15-16): 259-260 (1898)
Distribution: China (NW-Yunnan); SE-Tibet
36 CHI TIB
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Neriiflora
species :
Rhododendron floribundum
Franch.; Bull. Soc. Bot. Fr. 33: 232 (1886); et in Nouv. Arch. Mus. Paris, Ser. 2(10): 49 (1887 publ. 1888)
Distribution: China (SW-Sichuan, W-Guizhou, NE-Yunnan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Argyrophylla
species :
Rhododendron flosculum
W.P.Fang & G.Z.Li; Bull. Bot. Res., Harbin 4(1): 4-6, photo. 4 (1984)
Distribution: China (S-Sichuan)
36 CHI
species :
Rhododendron flumineum
W.P.Fang & M.Y.He; Bull. Bot. Res., Harbin 2(2): 91-92, pl. 8 (1982)
Distribution: China (S-Yunnan)
36 CHI
Synonyms: hidden
= Rhododendron mariae subsp. flumineum (W.P.Fang & M.Y.He) X.F.Jin & B.Y.Ding; Nordic J. Bot. 27(3): 197 (2009)
species :
Rhododendron formosanum
Hemsl.; Bull. Misc. Inform. Kew 1895(104): 183 (1895)
Distribution: S-Taiwan
38 TAI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Argyrophylla
species :
Rhododendron formosum
Wall.; Pl. Asiat. Rar. [Wallich] 3: 3. t. 207 (1831)
Distribution: NE-India (Arunachal Pradesh, Meghalaya); Myanmar (Kachin, Mon)
40 IND 41 MYA
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Maddenia
Synonyms: hidden
= Azalea formosa (Wall.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron assamicum Anon.; Gard. Chron., n. s. 15: 8 (1881)
= Rhododendron formosum var. salicifolium C.B.Clarke; Hook.f., Fl. Brit. India [J. D. Hooker] 3: 473 (1882)
= Rhododendron gibsonii Paxton; Mag. Bot. 8: t. 217 (1841)
= Rhododendron iteophyllum Hutch.; Notes Roy. Bot. Gard. Edinburgh 12: 83 (1919)
species :
Rhododendron forrestii
Balf.f. ex Diels; Notes Roy. Bot. Gard. Edinburgh 5(25): 211 (1912), et ex Balf.f., Notes Roy. Bot. Gard. Edinburgh 11: 121 (1919), descr. emend.
subspecies :
subsp. forrestii
Distribution: Slovakia [I]; China (NW-Yunnan); SE-Tibet; NE-India (Arunachal Pradesh); NE-Myanmar (Kachin)
11 slo 36 CHI TIB 40 IND 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Neriiflora
Synonyms: hidden
= Rhododendron forrestii var. repens (Balf.f. & Forrest) Cowan & Davidian; Rhododendron Year Book 6: 69 (1951)
= Rhododendron repens Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 11(52-53): 115-120 (1919)
= Rhododendron forrestii var. tumescens Cowan & Davidian; Rhododendron Year Book 6: 69 (1951)
subspecies :
subsp. papillatum
D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 37(2): 338 (1979)
Distribution: SE-Tibet
36 TIB
species :
Rhododendron fortunans
J.J.Sm.; Bull. Jard. Bot. Buitenz., Ser. 3, 1: 401 (1920)
Distribution: C-Borneo
42 BOR
Remarks: Subgen. Rhododendron
species :
Rhododendron fortunei
T.Moore ex Lindl.; Gard. Chron. 868 (1859)
Distribution: China (Shaanxi, Hubei, Hunan, Henan, Anhui, Zhejiang, Jiangxi, Fujian, Guangdong, Guangxi, Sichuan, Guizhou, NE-Yunnan); Myanmar (Kachin); Vietnam
36 CHI 41 MYA VIE
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Fortunea
Synonyms: hidden
= Azalea fortunei (Lindl.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron albicaule H.Lév.; Repert. Spec. Nov. Regni Veg. 13(355-358): 148 (1914)
= Rhododendron kirkii Millais; Rhododendrons 169 (1917), pro syn.
species :
Rhododendron fragariflorum
Kingdon-Ward; Gard. Chron., Ser. 3, 86: 504 (1929), et ex Hutch. in Notes Bot. Gard. Edinb. 16: 179 (1931)
Distribution: SE-Tibet; Bhutan
36 TIB 40 BHU
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Fragariiflora
species :
Rhododendron frey-wysslingii
J.J.Sm.; Contr. Arnold Arbor. 8: 123 (1934)
Distribution: N-Sumatra
42 SUM
Remarks: Subgen. Rhododendron
species :
Rhododendron fuchsiifolium
H.Lév.; Repert. Spec. Nov. Regni Veg. 13(355-358): 148 (1914)
Distribution: China (Guangdong, Guangxi, S-Guizhou)
36 CHI
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
Synonyms: hidden
= Rhododendron tenue Ching ex W.P.Fang & M.Y.He; Bull. Bot. Res., Harbin 2(2): 87 (1982)
species :
Rhododendron fulgens
Hook.f.; Rhododendron Sikkim Himalaya 27, t. 25 (1849)
Distribution: S-Tibet; Nepal; Bhutan; N-India (Arunachal Pradesh, Darjeeling, Sikkim, Chumbi); Myanmar (Kachin)
36 TIB 40 BHU IND NEP 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Fulgensia
Synonyms: hidden
= Azalea fulgens (Hook.f.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
species :
Rhododendron fulvum
Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 10(47-48): 110-112 (1917)
subspecies :
subsp. fulvum
Distribution: China (W-Yunnan); NE-Myanmar (Kachin)
36 CHI 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Fulva
subspecies :
subsp. fulvoides
(Balf.f. & Forrest) D.F.Chamb.; R. H. S. Rhododendron Handb. 1998: 350 (1998)
Distribution: China (SW-Sichuan, W-Yunnan); SE-Tibet
36 CHI TIB
Synonyms: hidden
= Rhododendron fulvoides Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 12(57-58): 112-115 (1920)
species :
Rhododendron fuscipilum
M.Y.He; J. Sichuan Univ., Nat. Sci. Ed. 1984(1): 94, photo. 3 (1984)
Distribution: China (Guangxi)
36 CHI
species :
Rhododendron fuyuanense
Zheng H.Yang; Acta Phytotax. Sin. 35(2): 189, f. 2 (1997)
Distribution: China (E-Yunnan)
36 CHI
species :
Rhododendron galactinum
Balf.f. ex Tagg; Notes Roy. Bot. Gard. Edinburgh 15(72): 103-106 (1926)
Distribution: China (W-Sichuan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Falconera
species :
Rhododendron gannanense
Z.C.Feng; Bull. Bot. Res., Harbin 12(2): 145-146, f. 1-4 (1992)
Distribution: China (S-Gansu)
36 CHI
species :
Rhododendron gardenia
Schltr.; Bot. Jahrb. Syst. 55: 158 (1918)
Distribution: New Guinea (Irian Jaya, Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron gaultheriifolium
J.J.Sm.; Nova Guinea 18: 90 (1936)
Distribution: New Guinea (Irian Jaya, Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
variant :
var. expositum
Sleumer; Reinwardtia 5: 56 (1960)
Distribution: New Guinea (Irian Jaya)
42 NWG
species :
Rhododendron gemmiferum
M.N.Philipson & Philipson; Notes Roy. Bot. Gard. Edinburgh 33(3): 493 (1975)
Distribution: China (NW-Yunnan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Triflora
species :
Rhododendron genestierianum
Forrest; Notes Bot. Gard. Edinb. 12: 122 (1920)
Distribution: China (W-Yunnan); SE-Tibet; Myanmar (Kachin, Chin, Sagaing)
36 CHI TIB 41 MYA
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Genesteriana
species :
Rhododendron gideonii
Argent; Folia Malaysiana 4(2): 104 (2003)
Distribution: Bismarck Arch.
43 BIS
species :
Rhododendron giulianettii
Lauterb.; K. Schum. & Lauterb. Nachtr. Fl. Deutsch. Südsee, 338 (1905)
Distribution: New Guinea (Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron glabrifilum
J.J.Sm.; Nova Guinea 12: 134 (1914)
Distribution: New Guinea (Irian Jaya, Papua New Guinea)
42 NWG
Synonyms: hidden
= Rhododendron macgregoriae var. glabrifilum (J.J.Sm.) Sleumer; Reinwardtia 5: 206 (1960)
= Rhododendron macgregoriae var. mayrii (J.J.Sm.) Sleumer; (1960)
= Rhododendron mayrii J.J.Sm.; Nova Guinea 18: 97 (1936)
= Rhododendron torricellense Schltr.; Bot. Jahrb. Syst. 55: 142 (1917)
species :
Rhododendron glabriflorum
J.J.Sm.; Meded Herb. Leid No. 25, 6 (1915)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron glanduliferum
Franch.; Bull. Soc. Bot. France 33: 231 (1886)
Distribution: China (NE-Yunnan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Fortunea
species :
Rhododendron glandulosum
(Standl. ex Small) Millais; Rhododendrons 173 (1917)
Distribution: Russian Far East (Kamchatka, Sakhalin); Japan; Alaska
31 RFE 38 JAP 70 ASK
Synonyms: hidden
= Rhododendron camtschaticum subsp. glandulosum (Standl. ex Small) Hultén; Kongl. Svenska Vetensk. Acad. Handl., Ser. 3, 5(4): 15 (1930)
= Rhododendron camtschaticum subsp. glandulosum (Standl. ex Small) B.Boivin; Naturaliste Canad. 94: 630 (1967), isonym
= Rhododendron camtschaticum var. pumilum E.A.Busch; Fl. Sibir. Orient. Extremi 2: 35 (1915)
= Therorhodion camtschaticum var. barbatum Nakai; Nakai & G. Koidz., Trees Shrubs Japan, rev. ed. 42 (1927)
= Therorhodion camtschaticum var. pumilum (E.A.Busch) T.Yamaz.; Fl. Japan, 3a: 11 (1993)
= Therorhodion glandulosum Standl. ex Small; Britton et al. (eds.), N. Amer. Fl. 29: 45 (1914)
species :
Rhododendron glaucophyllum
Rehder; J. Arnold Arbor. 26: 73 (1945)
Distribution: Nepal; Bhutan; N-India (Sikkim)
40 BHU IND NEP
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Glauca
Synonyms: hidden
= Azalea glauca (Hook.f.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron glaucophyllum var. album Davidian; J. Amer. Rhododendron Soc. 36: 16 (1982)
= Rhododendron glaucum Hook.f.; Rhododendr. Sikkim-Himalaya 2: t. 17 (1851), nom. illeg.
species :
Rhododendron glischroides
Tagg & Forrest; Spec. Rhododendron, 137 (1930), et Notes Bot. Gard. Edinb. 16: 194 (1931), latine
Distribution: Myanmar (Kachin)
41 MYA
Synonyms: hidden
= Rhododendron glischroides var. arachnoideum Tagg & Forrest; Notes Roy. Bot. Gard. Edinburgh 16: 196 (1931)
= Rhododendron glischrum subsp. glischroides (Tagg & Forrest) Chamb.; Notes Roy. Bot. Gard. Edinburgh 36(1): 117 (1978)
species :
Rhododendron glischrum
Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 9: 229 (1916)
subspecies :
subsp. glischrum
Distribution: China (NW-Yunnan); S-Tibet; Myanmar (Kachin)
36 CHI TIB 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Glischra
subspecies :
subsp. rude
(Tagg & Forrest) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 36(1): 117 (1978)
Distribution: China (NW-Yunnan); SE-Tibet; NE-India (Arunachal Pradesh); Myanmar (Kachin)
36 CHI TIB 40 IND 41 MYA
Synonyms: hidden
= Rhododendron rude Tagg & Forrest; Spec. Rhododendron, 141 (1930), et Notes Roy. Bot. Gard. Edinburgh 16(79): 207-208 (1931), latine
species :
Rhododendron gologense
C.J.Xu & Z.J.Zhao; Flora lignosus Qinghaica Addenda 2 (1987)
Distribution: China (SE-Qinghai)
36 CHI
species :
Rhododendron gonggashanense
W.K.Hu; Bull. Bot. Res., Harbin 8(3): 55-56, pl. 5 (1988)
Distribution: China (W-Sichuan)
36 CHI
species :
Rhododendron gongshanense
T.L.Ming; Acta Bot. Yunnan. 6(2): 151-152, f. 2 (1984)
Distribution: China (NW-Yunnan)
36 CHI
species :
Rhododendron goodenoughii
Sleumer; Reinwardtia 5: 131 (1960)
Distribution: New Guinea (Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron goyozanense
(M.Kikuchi) Craven; Blumea 56(1): 34 (2011)
Distribution: Japan (Honshu)
38 JAP
Synonyms: hidden
= Menziesia goyozanensis M.Kikuchi; J. Jap. Bot. 37: 355 (1962)
species :
Rhododendron gracilentum
F.Muell.; Trans. Roy. Soc. Vict. N. S. 1(2): 22 (1889)
Distribution: New Guinea (Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron grande
Wight; Calcutta J. Nat. Hist. 8: 176 (1847)
Distribution: S-Tibet; Nepal; Bhutan; N-India (Darjeeling, Sikkim, Arunachal Pradesh, West Bengal)
36 TIB 40 BHU IND NEP
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Grandia
Synonyms: hidden
= Azalea grandis (Wight) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron argenteum Hook.f.; Rhododendron Sikkim Himalaya t. 9 (1849)
= Rhododendron grande var. singalense U.Rai, Lama, N.Thapa & Baraily; Pleione 8(1): 161 (2014)
= Rhododendron longiflorum Nutt.; Hooker´s J. Bot. Kew Gard. Misc. 5: 366 (1853)
= Rhododendron wilsonii Nutt. ex Hook.; Bot. Mag. 85: t. 5116 (1859)
= Waldemaria argentea (Hook.f.) Klotzsch; Bot. Ergebn. Reise Waldemar [Klotzsch & Garcke] 99 (1862)
species :
Rhododendron griersonianum
Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 11(52-53): 69-71 (1919)
Distribution: China (W-Yunnan); Myanmar
36 CHI 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Griersoniana
Synonyms: hidden
= Hymenanthes griersoniana (Balf.f. & Forrest) H.F.Copel.; Amer. Midl. Naturalist 30: 614 (1943)
species :
Rhododendron griffithianum
Wight; Icon. Pl. Ind. Orient. 4: 6, t. 1203 (1851)
Distribution: S-Tibet; W-Nepal; Bhutan; N-India (Sikkim, Darjeeling, Arunachal Pradesh)
36 TIB 40 BHU IND NEP
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Fortunea
Synonyms: hidden
= Azalea griffithiana (Wight) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron aucklandii Hook.f.; Rhododendron Sikkim Himalaya t. 11 (1851)
= Rhododendron griffithianum var. aucklandii (Hook.f.) Hook.; Bot. Mag. 84: t. 5065 (1858)
= Rhododendron oblongum Griff.; Icon. Pl. Asiat. t. 523 (1854)
species :
Rhododendron groenlandicum
(Oeder) Kron & Judd; Syst. Bot. 15(1): 67 (1990)
Name: Bog Labrador tea (EN), Grönländischer Porst (DE)
Distribution: England [I]; Germany [I]; Alaska; Greenland; Canada (Alberta, British Columbia, Labrador, Manitoba, New Brunswick, Newfoundland, Nova Scotia, Northern Territories, Nunavut, Ontario, Prince Edward Isl., Québec, Saskatchewan, Yukon); St. Pierre et Miquelon; USA (Connecticut, Idaho, Massachusetts, Maine, Michigan, Minnesota, North Dakota, New Hampshire, New Jersey, New York, Ohio, Oregon, Pennsylvania, South Dakota, Vermont, Washington State, Wisconsin)
10 grb 11 ger 70 ASK CDN GNL 71 CDN 72 CDN SPM 73 USA 74 USA 75 USA
Synonyms: hidden
= Ledum canadense G.Lodd.; Bot. Cab. 11: t. 1049 (1826)
= Ledum groenlandicum f. compactum (Bean) Rehder; Bibliogr. Cult. Trees 504 (1949)
= Ledum groenlandicum Oeder; Fl. Dan. 4: Fasc. 10, 5 (1771)
= Ledum groenlandicum var. aridiphilum D.Löve; Taxon 17: 89 (1968)
= Ledum groenlandicum var. compactum (Bean) Rehder; Man. Cult. Trees 679 (1927)
= Ledum latifolium Jacq.; Collectanea [Jacquin] 2: 308 (1789), nom. illeg.
= Ledum latifolium var. canadense (G.Lodd.) DC.; Prodr. [A. P. de Candolle] 7: 730 (1839)
= Ledum latifolium var. compactum Bean; Trees & Shrubs Brit. Isles 2: 13 (1914)
= Ledum latifolium var. palustre Alph.Wood; Class-book Bot. 237 (1845)
= Ledum pacificum Small; Britton et al. (eds.), N. Amer. Fl. 29: 37 (1914)
= Ledum palustre Michx.; Fl. Bor. Amer. 1: 259 (1803), non L.
= Ledum palustre subsp. groenlandicum (Oeder) Hultén; Acta Univ. Lund., Ser. 2, 44(1): 1219 (1948)
= Ledum palustre var. groenlandicum (Oeder) Rosenv.; Meddel. Grønland 3: 292 (1892)
= Ledum palustre var. latifolium (Jacq.) Hook.; Fl. Bor.-Amer. (Hook.) 2: 44 (1834)
species :
Rhododendron guangnanense
R.C.Fang; Acta Bot. Yunnan. 4(3): 254 (1982)
Distribution: China (SE-Yunnan)
36 CHI
species :
Rhododendron guanwuense
S.S.Ying; New Taxa New Names 7: 290 (2024)
Distribution: Taiwan
38 TAI
Remarks: provisionally accepted name
species :
Rhododendron guihainianum
G.Z.Li; Guihaia 15(4): 299-300, f. 3 (1995)
Distribution: China (E-Guangxi)
36 CHI
species :
Rhododendron guizhongense
G.Z.Li; Guihaia 15(3): 198 (1995), nom. nov.
Distribution: China (W-Hunan, N-Guangxi, E-Guizhou)
36 CHI
Synonyms: hidden
= Rhododendron glandulostylum W.P.Fang & M.Y.He; Bull. Bot. Res., Harbin 2(2): 84-85, pl. 3 (1982) (not Komatsu (1918)
species :
Rhododendron guizhouense
M.Y.Fang; Proc. Fourth Intern. Rhodod. Conf. 58 (1988), et Acta Phytotax. Sin. 30(6): 555 (1992)
Distribution: China (N-Guangxi, E-Guizhou, W-Hunan)
36 CHI
species :
Rhododendron gumineense
Craven; J. Adelaide Bot. Gard. 27(4): 31 (2014)
Distribution: New Guinea (Irian Jaya, Papua New Guinea)
42 NWG
species :
Rhododendron habbemae
Koord.; Nova Guinea 8: 877 (1912)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron bodenii Wernham; Trans. Linn. Soc. London, Bot. 9: 94 (1916)
species :
Rhododendron habrotrichum
Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 9(44-45): 232-233 (1916)
Distribution: China (W-Yunnan); NE-Myanmar (Kachin)
36 CHI 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Glischra
species :
Rhododendron haematodes
Franch.; Bull. Soc. Bot. France 33: 232 (1886)
subspecies :
subsp. haematodes
Distribution: China (W-Yunnan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Neriiflora
Synonyms: hidden
= Azalea haematodes (Franch.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron haematodes var. calycinum Franch.; Bull. Soc. Bot. France 34: 280 (1887)
= Rhododendron haematodes var. hypoleucum Franch.; Bull. Soc. Bot. France 34: 280 (1887)
subspecies :
subsp. chaetomallum
(Balf.f. & Forrest in Balf.Balf.) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 37(2): 333 (1979)
Distribution: China (NW-Yunnan); SE-Tibet; NE-India; Myanmar (Kachin)
36 CHI TIB 40 IND 41 MYA
Synonyms: hidden
= Rhododendron chaetomallum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 12: 95 (1920)
= Rhododendron chaetomallum var. chamaephytum Cowan; Notes Roy. Bot. Gard. Edinburgh 19: 146 (1936)
= Rhododendron chaetomallum var. glaucescens Tagg & Forrest; Notes Roy. Bot. Gard. Edinburgh 16: 189 (1931)
= Rhododendron hillieri Davidian; Rhododendrons Magnolias Camellias 1974: 47 (1974)
species :
Rhododendron haematophthalmum
Sleumer; Reinwardtia 5: 89 (1960)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron hainanense
Merr.; Philipp. J. Sci. 21(4): 350 (1922)
Distribution: China (S-Guangxi, Hainan); Vietnam
36 CHI 41 VIE
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
species :
Rhododendron hameliiflorum
Wernham; Trans. Linn. Soc. London, Bot. 9: 98 (1916)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron hanceanum
Hemsl.; J. Linn. Soc., Bot. 26: 24 (1889)
Distribution: China (C-Sichuan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Tephropepla
Synonyms: hidden
= Azalea hanceana (Hemsl.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron willmottiae Anon.; Gard. Chron., Ser. 3, 55: 319 (1914)
species :
Rhododendron hancockii
Hemsl.; Bull. Misc. Inform. Kew 1895(100-101): 107 (1895)
Distribution: China (SE-Yunnan, Guangxi)
36 CHI
Remarks: Subgen. Azaleastrum, Sect. Choniastrum
variant :
var. longisepalum
R.C.Fang & C.H.Yang; Acta Bot. Yunnan. 23: 294 (2001)
Distribution: China (SE-Yunnan)
36 CHI
species :
Rhododendron haofui
Chun & W.P.Fang; Acta Phytotax. Sin. 6(2): 169-170, pl. 41, f. 1 (1957)
Distribution: China (N-Guangxi, Guizhou, S-Hunan, SW-Jiangxi, E-Yunnan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Argyrophylla
species :
Rhododendron hartleyi
Sleumer; Blumea 21(2): 366 (1973)
Distribution: New Guinea (Papua New Guinea)
42 NWG
species :
Rhododendron hatamense
Becc.; Malesia 1: 202 (1878)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron coenenii J.J.Sm.; Nova Guinea 12: 132 (1914)
= Rhododendron gibbsiae J.J.Sm.; Gibbs, Phytogeogr. & Fl. Arfak Mts. 169 (1917)
species :
Rhododendron heatherae
Rushforth; New Plantsman 8(4): 248 (2001)
Distribution: Tibet
36 TIB
species :
Rhododendron heizhugouense
M.Y.He & L.C.Hu; Acta Bot. Yunnan. 18(3): 295-296, f. 1 (1996)
Distribution: China (Sichuan)
36 CHI
species :
Rhododendron heliolepis
Franch.; Bull. Soc. Bot. Fr. xxxiv 283 (1887)
Distribution: China (Sichuan, Yunnan); Tibet; Myanmar (Kachin)
36 CHI TIB 41 MYA
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Heliolepida
Synonyms: hidden
= Azalea heliolepis (Franch.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron brevistylum Franch.; J. Bot. [Morot] 3(5): 261 (1898)
= Rhododendron heliolepis var. brevistylum (Franch.) Cullen; Notes Roy. Bot. Gard. Edinburgh 36(1): 110 (1978)
= Rhododendron pholidotum Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 10: 132 (1917)
= Rhododendron plebeium Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 10: 136 (1917)
= Rhododendron porrosquameum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13: 57 (1920)
variant :
var. fumidum
(Balf.f. & W.W.Sm.) R.C.Fang; Acta Bot. Yunnan. 4(3): 253 (1982)
Distribution: China (NE-Yunnan)
36 CHI
Synonyms: hidden
= Rhododendron fumidum Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 10: 112 (1917)
variant :
var. oporinum
(Balf.f. & Kingdon-Ward) A.L.Chang; Acta Bot. Yunnan. 4(3): 253 (1982)
Distribution: China (Yunnan); Myanmar (Kachin)
36 CHI 41 MYA
Synonyms: hidden
= Rhododendron oporinum Balf.f. & Kingdon-Ward; Notes Roy. Bot. Gard. Edinburgh 10: 129 (1917)
species :
Rhododendron hellwigii
Warb.; Bot. Jahrb. Syst. 16: 5, 26 (1892)
Distribution: New Guinea (Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron helodes
Sleumer; Reinwardtia 5: 161 (1960)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron hemitrichotum
Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 12: 115 (1920)
Distribution: China (Sichuan, NW-Yunnan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Scabrifolia
species :
Rhododendron hemsleyanum
E.H.Wilson; Bull. Misc. Inform. Kew 1910(4): 109-110 (1910)
Distribution: China (SW-Sichuan: Emei Shan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Fortunea
variant :
var. chengianum
(D.Fang) W.P.Fang ex W.K.Hu; Fl. Reipubl. Popularis Sin. 57(2): 30 (1994)
Distribution: China (SW-Sichuan: Emei Shan)
36 CHI
Synonyms: hidden
= Rhododendron chengianum D.Fang; Icon. Pl. Omeiensium 1(1): t. 31 (1942)
species :
Rhododendron henanense
W.P.Fang; Acta Phytotax. Sin. 21(4): 457-459, f. 2 (1983)
subspecies :
subsp. henanense
Distribution: China (N-Henan)
36 CHI
subspecies :
subsp. lingbaoense
W.P.Fang; Acta Phytotax. Sin. 21(4): 459, f. 3 (1983)
Distribution: China (W-Henan)
36 CHI
species :
Rhododendron henryi
Hance; J. Bot. 19(224): 243 (1881)
Distribution: China (Fujian, Guangdong, Guangxi, Jiangxi, Zhejiang); Taiwan
36 CHI 38 TAI
Remarks: Subgen. Azaleastrum, Sect. Choniastrum
Synonyms: hidden
= Azalea henryi (Hance) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron ciliatopedicellatum Hayata; Icon. Pl. Formosan. 3: 131-132 (1913)
= Rhododendron shiwandashanense P.C.Tam; Guihaia 3(3): 184, f. 6 (1983)
variant :
var. dunnii
(E.H.Wilson) M.Y.He; Fl. Reipubl. Popularis Sin. 57(2): 365 (1995)
Distribution: China (Fujian, Guangdong, Guangxi, Jiangxi, Zhejiang)
36 CHI
Synonyms: hidden
= Rhododendron dunnii E.H.Wilson; J. Arnold Arbor. 6(3): 170-171 (1925)
species :
Rhododendron herzogii
Warb.; Bot. Jahrb. Syst. 16: 15, 25 (1892)
Distribution: New Guinea (Irian Jaya, Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
variant :
var. occidentale
Argent; Rhododendrons subgen. Vireya, ed. 2. 73 (2015)
Distribution: New Guinea (Irian Jaya)
42 NWG
species :
Rhododendron heteroclitum
H.P.Yang; Bull. Bot. Res. North-East. Forest. Inst. 9(1): 17 (1989)
Distribution: China (W-Sichuan)
36 CHI
species :
Rhododendron heterolepis
Danet; Adansonia 32(1): 136 (2010)
Distribution: New Guinea (Irian Jaya)
42 NWG
species :
Rhododendron himantodes
Sleumer; Bot. Jahrb. Syst. 71: 145 (1940)
Distribution: NE-Borneo
42 BOR
Remarks: Subgen. Rhododendron
variant :
var. lavandulifolium
Sleumer; Reinwardtia 5: 97 (1960)
Distribution: E-Borneo
42 BOR
species :
Rhododendron hippophaeoides
Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 9: 236 (1916)
Distribution: China (Yunnan, Sichuan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Lapponica
Synonyms: hidden
= Rhododendron fimbriatum Hutch.; Gard. Chron., Ser. 3, 111: 438 (1932)
variant :
var. occidentale
M.N.Philipson & Philipson; Notes Roy. Bot. Gard. Edinburgh 34(1): 20 (1975)
Distribution: China (Yunnan)
36 CHI
species :
Rhododendron hirsutipetiolatum
R.C.Fang & A.L.Zhang; Notes Roy. Bot. Gard. Edinburgh 41(1): 162 (1983)
Distribution: China (Yunnan)
36 CHI
species :
Rhododendron hirsutum
L.; Sp. Pl. [Linnaeus] 392 (1753)
Name: Bewimperte Alpenrose, Behaarte Alpenrose (DE)
Distribution: Germany (Bayern); Switzerland; Liechtenstein; Austria; Slovakia; France; Italy; Slovenia; Croatia; Bosnia & Hercegovina
11 AUT GER LIE SLO SWI 12 FRA 13 BIH CRO ITA SLV
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Rhododendron
Synonyms: hidden
= Azalea hirsuta (L.) Kuntze; Revis. Gen. Pl. 2: 386 (1891)
= Chamaerhododendron hirsutum (L.) Bubani; Fl. Pyren. [Bubani] 2: 18 (1900)
= Rhododendron angustifolium Hoppe; Flora (Regensburg) 20: 185, 205 (1837)
= Rhododendron germanicum Hoppe; Flora (Regensburg) 20: 187 (1837)
= Rhododendron germanicum var. hirsutum (L.) Hoppe; Flora (Regensburg) 20: 188 (1837), nom. illeg.
= Rhododendron glabratum Hoppe; Flora (Regensburg) 20: 185 (1837)
= Rhododendron hirsutum f. albiflorum (Goiran) Braun-Blanq.; 1638 (1926)
= Rhododendron hirsutum f. album Schinz & R.Keller; Fl. Schweiz, ed. 2: 169 (1905)
= Rhododendron hirsutum f. dryadifolium (Murr) Braun-Blanq.; Ill. Fl. Mitt.-Eur. 5: 1628 (1926)
= Rhododendron hirsutum f. glabratum (Asch. & Kuhn) Zabel; Handb. Laubholzben. [Beissner et al.] [Beissner et al.] 375 (1903)
= Rhododendron hirsutum f. laciniatum (Schröt.) Braun-Blanq.; Ill. Fl. Mitt.-Eur. 5: 1628 (1926)
= Rhododendron hirsutum f. latifolium (Hoppe) Braun-Blanq.; 1638 (1926)
= Rhododendron hirsutum f. latifolium (Hoppe) Zabel; Handb. Laubholzben. [Beissner et al.] [Beissner et al.] 375 (1903)
= Rhododendron hirsutum f. microphyllum (Briq.) Bolzon; Nuovo Giorn. Bot. Ital., n. s. 21: 193 (1914)
= Rhododendron hirsutum f. microphyllum (Briq.) Braun-Blanq.; 1638 (1926)
= Rhododendron hirsutum f. nanum Bolzon; Nuovo Giorn. Bot. Ital., n. s. 21: 192 (1914)
= Rhododendron hirsutum f. variegatum (G.Don) Rehder; Bibliogr. Cult. Trees 510 (1949)
= Rhododendron hirsutum lusus laciniatum Schröt.; Ber. Schweiz. Bot. Ges. 13: 130 (1903)
= Rhododendron hirsutum var. albiflorum (Goiran) Schröt.; Ber. Schweiz. Bot. Ges. 13: 130 (1903)
= Rhododendron hirsutum var. ciliatum Braun-Blanq.; Ill. Fl. Mitt.-Eur. 5: 1628 (1926)
= Rhododendron hirsutum var. dryadifolium Murr; Deutsche Bot. Monatsschr. 15: 201 (1897)
= Rhododendron hirsutum var. fallax Bornm.; Mitt. Thüring. Bot. Vereins N. F. 36: 48 (1925)
= Rhododendron hirsutum var. glabratum Asch. & Kuhn; Oesterr. Bot. Z. 14: 301 (1864)
= Rhododendron hirsutum var. hispidissimum Schröt.; Ber. Schweiz. Bot. Ges. 14: 66 (1905)
= Rhododendron hirsutum var. laciniatum (Schröt.) Bean; Trees & Shrubs Brit. Isles 2: 360 (1914)
= Rhododendron hirsutum var. lasiopus Brügger ex Schröd.; Pflanzenleben Alp. 113 (1904)
= Rhododendron hirsutum var. latifolium Hoppe; Flora (Regensburg) 5: 525 (1822)
= Rhododendron hirsutum var. microphyllum Briq.; Bull. Lab. Bot. Gén. Univ. Genève 1: 482 (1897)
= Rhododendron hirsutum var. parvifolium L.Keller; Verh. K.K. Zool.-Bot. Ges. Wien 49: 377 (1899)
= Rhododendron hirsutum var. variegatum G.Don; Gen. Hist. 3: 844 (1834)
= Rhododendron intermedium Schur; Enum. Pl. Transsilv. 448 (1866), nom. illeg.
= Rhododendron latifolium Hoppe; Flora (Regensburg) 23: 525 (1840), nom. illeg.
species :
Rhododendron hirtipes
Tagg; Spec. Rhododendron 40 (1930)
Distribution: SE-Tibet
36 TIB
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Selensia. Status doubtful, not listed in Fl. of China
Synonyms: hidden
= Rhododendron xizangense W.P.Fang & W.K.Hu; Bull. Bot. Res., Harbin 6(1): 167-168 (1986)
species :
Rhododendron hirtolepidotum
J.J.Sm.; Nova Guinea 12: 135 (1914)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron hodgsonii
Hook.f.; Rhododendron Sikkim Himalaya 16, t. 15 (1851)
Distribution: S-Tibet; Nepal; Bhutan; N-India (Arunachal Pradesh, West Bengal, Darjeeling, Sikkim, Chumbi); Myanmar (Kachin)
36 TIB 40 BHU IND NEP 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Falconera
Synonyms: hidden
= Azalea hodgsonii (Hook.f.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron hodgsonii var. album D.Bhattach.; Fasc. Fl. India 25: 118 (2014)
species :
Rhododendron hoi
W.P.Fang; Acta Sci. Nat. Univ. Szechuan. 1957(2): 216 (1957)
Distribution: China (NC-Sichuan)
36 CHI
Synonyms: hidden
= Rhododendron anthopogonoides subsp. hoi (W.P.Fang) W.P.Fang & Xiong; Acta Phytotax. Sin. 21(4): 466 (1983)
species :
Rhododendron hongkongense
Hutch.; Spec. Rhododendron 562 (1930)
Distribution: China (Guangdong)
36 CHI
Remarks: Subgen. Azaleastrum, Sect. Azaleastrum
Synonyms: hidden
= Azalea myrtifolia Champ.; Hook. Bot. Mag. 77: sub t. 4609 (1851) (not Rhododendron myrtifolium Lodd. (1824), nor Schott & Kotschy (1851)
species :
Rhododendron hooglandii
Sleumer; Reinwardtia 5: 75 (1960)
Distribution: New Guinea (Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron hookeri
Nutt.; Hooker´s J. Bot. Kew Gard. Misc. 5: 359 (1853)
Distribution: SE-Tibet; Nepal; NE-India (Arunachal Pradesh)
36 TIB 40 IND NEP
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Thomsonia
Synonyms: hidden
= Azalea hookeri (Nutt.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
species :
Rhododendron horlickianum
Davidian; Rhododendrons (London), 1972: 53 (1972)
Distribution: Myanmar (Kachin)
41 MYA
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Maddenia
species :
Rhododendron huadingense
B.Y.Ding & Y.Y.Fang; Bull. Bot. Res., Harbin 10(1): 31-32, f. 1 (1990), et Taxon 54(3): 804 (2005)
Distribution: China (Zhejiang)
36 CHI
species :
Rhododendron huangpingense
Xiang Chen & Jia Y.Huang; Novon 20(4): 386 (2010)
Distribution: China (Guizhou)
36 CHI
species :
Rhododendron huanshanense
S.S.Ying; New Taxa New Names 4: 149 (2022)
Distribution: Taiwan
38 TAI
Remarks: provisionally accepted name
species :
Rhododendron huanum
W.P.Fang; Contr. Biol. Lab. Chin. Assoc. Advancem. Sci., Sect. Bot. 12: 38 (1939) ("huianum")
Distribution: China (Chongqing, NE-Guizhou, Sichuan, NE-Yunnan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Fortunea
species :
Rhododendron huguangense
P.C.Tam; Bull. Bot. Res., Harbin 2(1): 98-99, f. 2 (1982)
Distribution: China (Guangdong, E-Guangxi, S-Hunan)
36 CHI
Synonyms: hidden
= Rhododendron hukwangense P.C.Tam; Survey Genus Rhododendron S. China 76, f. 12 (1983), orth. var.
species :
Rhododendron huidongense
T.L.Ming; Acta Bot. Yunnan. 3(1): 115-117, f. 1, 6-10 (1981)
Distribution: China (SW-Sichuan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Parishia
species :
Rhododendron hunanense
Chun ex P.C.Tam; Bull. Bot. Res., Harbin 2(1): 92-93 (1982)
Distribution: China (S-Hunan, E-Jiangxi)
36 CHI
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
Synonyms: hidden
= Rhododendron hunanense var. mangshanicum P.C.Tam; Bull. Bot. Res. North-East. Forest. Inst. 2(1): 93 (1982)
species :
Rhododendron hunnewellianum
Rehder & E.H.Wilson; Pl. Wilson. [Sargent] 1(3): 535 (1913)
subspecies :
subsp. hunnewellianum
Distribution: China (NW-Sichuan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Argyrophylla
Synonyms: hidden
= Rhododendron leucolasium Diels; Repert. Spec. Nov. Regni Veg. 17(486-491): 196 (1921)
subspecies :
subsp. rockii
(E.H.Wilson) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 37(2): 329 (1979)
Distribution: China (S-Gansu, N-Sichuan)
36 CHI
Synonyms: hidden
= Rhododendron rockii E.H.Wilson; J. Arnold Arbor. 9(2-3): 103-104 (1928)
species :
Rhododendron hyacinthosmum
Sleumer; Blumea 21(2): 363 (1973)
Distribution: New Guinea (Papua New Guinea)
42 NWG
species :
Rhododendron hylaeum
Balf.f. & Farrer; Notes Roy. Bot. Gard. Edinburgh 13: 265 (1922)
Distribution: China (NW-Yunnan); SE-Tibet; NE-Myanmar (Kachin)
36 CHI TIB 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Thomsonia
species :
Rhododendron hyperythrum
Hayata; Icon. Pl. Formosan. 3: 133-134 (1913)
Distribution: NC-Taiwan
38 TAI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Pontica
Synonyms: hidden
= Rhododendron rubropunctatum Hayata; Icon. Pl. Formosan. 3: 141-142 (1913), not H. Lév. & Vaniot (1911), nor T. L. Ming (1984)
species :
Rhododendron hypoglaucum
Hemsl.; J. Linn. Soc., Bot. 26(173): 25 (1889)
Distribution: China (Chongqing, W-Hubei, S-Shaanxi, E-Sichuan)
36 CHI
Synonyms: hidden
= Azalea hypoglauca (Hemsl.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron argyrophyllum subsp. hypoglaucum (Hemsl.) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 37(2): 329 (1979)
= Rhododendron gracilipes Franch.; J. Bot. [Morot] 9(21): 391 (1895)
species :
Rhododendron hypoleucophyllum
Makino; Enum. Spermatophytarum Japon. 1: 33 (1941)
Distribution: Japan
38 JAP
Remarks: provisionally accepted name
species :
Rhododendron hypoleucum
(Kom.) Harmaja; Ann. Bot. Fenn. 27(2): 203 (1990)
Distribution: Russian Far East (Amur, Khabarovsk, Kuril Isl., Primorye, Sakhalin); Japan (Hokkaido)
31 RFE 38 JAP
Synonyms: hidden
= Ledum hypoleucum Kom.; Izv. Imp. Bot. Sada Petra Velikago 16: 175 (1916)
species :
Rhododendron hyugaense
(T.Yamaz.) T.Yamaz.; J. Jap. Bot. 62(3): 72 (1987)
Distribution: Japan (Kyushu)
38 JAP
Remarks: Subgen. Tsutsusi, Sect. Brachycalyx
Synonyms: hidden
= Rhododendron hyugaense f. albiflorum Hatus. ex Minamit.; J. Jap. Bot. 94(4): 220 (2019)
= Rhododendron viscistylum var. hyugaense T.Yamaz.; J. Jap. Bot. 59(7): 208 (1984)
species :
Rhododendron igneum
Cowan; Notes Bot. Gard. Edinb. 19: 235 (1937)
Distribution: SE-Tibet
36 TIB
species :
Rhododendron impeditum
Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 9: 239 (1916)
Distribution: China (SW-Sichuan, NW-Yunnan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Lapponica
Synonyms: hidden
= Rhododendron litangense Balf.f. ex Hutch.; Notes Bot. Gard. Edinb. 17: 27 (1929)
species :
Rhododendron impositum
J.J.Sm.; Bot. Jahrb. Syst. 68: 201 (1937)
Distribution: SW-Sulawesi
42 SUL
Remarks: Subgen. Rhododendron
species :
Rhododendron impressopunctatum
J.J.Sm.; Repert. Spec. Nov. Regni Veg. 30: 164 (1932)
Distribution: Moluccas (Buru Isl.)
42 MOL
Remarks: Subgen. Rhododendron
species :
Rhododendron inaequale
(C.B.Clarke) Hutch.; Notes Roy. Bot. Gard. Edinburgh 12: 15, 75 (1919)
Distribution: NE-India (Arunachal Pradesh, Manipur, Meghalaya, Nagaland); Myanmar (Chin)
40 IND 41 MYA
Synonyms: hidden
= Rhododendron formosum var. inaequale C.B.Clarke; Hook.f., Fl. Brit. India [J. D. Hooker] 3: 473 (1882)
species :
Rhododendron incommodum
Sleumer; Reinwardtia 5: 70 (1960)
Distribution: New Guinea (Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron inconspicuum
J.J.Sm.; Meded. Herb. Leid. No. 25, 1 (1915)
Distribution: New Guinea (Irian Jaya, Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron invasorium Sleumer; Reinwardtia 5: 60 (1960)
= Rhododendron luteosquamatum Sleumer; Reinwardtia 5: 166 (1960)
species :
Rhododendron indicum
(L.) Sweet; Hort. Brit. (ed. 2) 343 (1833)
Distribution: S-Japan (Honshu, Kyushu); China [I]; South Korea [I]; Taiwan [I]; Myanmar [I]; Java [I]; Mexico [I]; Honduras [I]
36 chi 38 JAP kor tai 41 mya 42 jaw 79 mex 80 hon
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
Synonyms: hidden
= Azalea balsaminiflora Carrière; Rev. Hort. (Paris) 54: 432 (1882)
= Azalea burgeri Miq.; Ann. Mus. Bot. Lugduno-Batavi 1: 34 (1863)
= Azalea calycina Lem.; Jard. Fl. 3: t. 257 (1853)
= Azalea crispiflora Hook.; Bot. Mag. t. 4726 (1844)
= Azalea crispiflora var. rosea J.Dix; Proc. Roy. Hort. Soc. London 1: 479 (1861)
= Azalea danielsiana Paxton; Paxton´s Mag. Bot. 1: 129 (1834)
= Azalea decumbens (D.Don ex G.Don) DC.; Prodr. [A. P. de Candolle] 7: 718 (1839)
= Azalea indica L.; Sp. Pl. [Linnaeus] 150 (1753)
= Azalea indica var. angustifolia Blume; Bijdr. Fl. Ned. Ind. 852 (1826)
= Azalea indica var. balsaminiflora (Carrière) Kelsey & Dayton; Standard. Pl. Names, ed. 2: 32 (1942)
= Azalea indica var. bealei John Edwards; Natl. Gard. Almanack 1855: 312 (1855)
= Azalea indica var. coccinea (Reider) P.B.Mead; Young Churchman Misc. 3: 80 (1848)
= Azalea indica var. copii P.B.Mead; Young Churchman Misc. 3: 80 (1848)
= Azalea indica var. crispiflora (Hook.) Van Houtte; Fl. Serres Jard. Eur. 9: 79 (1854)
= Azalea indica var. crystallina Verschaff.; Nursery Cat. (Ambroise Verschaffelt) 79: 2 (1866)
= Azalea indica var. elegans P.B.Mead; Young Churchman Misc. 3: 80 (1848)
= Azalea indica var. floribunda Blume; Bijdr. Fl. Ned. Ind. 853 (1826)
= Azalea indica var. garibaldii Ivery; Proc. Roy. Hort. Soc. London 4: 98 (1864)
= Azalea indica var. lateritia Lindl.; Edwards´s Bot. Reg. 20: t. 1700 (1834)
= Azalea indica var. obtusa (Lindl.) Rehder; Cycl. Amer. Hort. [L.H.Bailey] 1: 122 (1900)
= Azalea indica var. obtusa-alba (Anon.) Rehder; Cycl. Amer. Hort. [L.H.Bailey] 1: 122 (1900)
= Azalea indica var. purpurea P.B.Mead; Young Churchman Misc. 3: 80 (1848)
= Azalea indica var. rosiflora (Dean) Rehder; Cycl. Amer. Hort. [L.H.Bailey] 1: 122 (1900)
= Azalea indica var. sinensis Van Houtte; Fl. Serres 20: 151 (1874)
= Azalea indica var. spatulata Blume; Bijdr. Fl. Ned. Ind. 852 (1826)
= Azalea indica var. speciosa P.B.Mead; Young Churchman Misc. 3: 80 (1848)
= Azalea indica var. stella Veitch; Proc. Roy. Hort. Soc. London 4: 97 (1864)
= Azalea indica var. variagata Van Houtte; Hort. Belge 5: 306 (1838)
= Azalea indica var. versicolor Low; Proc. Roy. Hort. Soc. London 4: 98 (1864)
= Azalea indica virginalis J.J.Veitch; Cat. New Beautiful Pl. 1863: 9 (1863)
= Azalea lateritia (Lindl.) André; Belgique Hort. 15: 185 (1865)
= Azalea macrantha Bunge; Enum. Pl. Corea 41 (1833)
= Azalea obtusa Lindl.; J. Hort. Soc. London 1: 152 (1846)
= Azalea ramentacea Lindl.; J. Hort. Soc. 4: 291 (1849)
= Azalea rollissonii T.Moore; Florist & Pomol. 1878: 35 (1878)
= Azalea rosiflora Dean; Fl. Mag. (London), n. s., 1880: t. 418 (1880)
= Azalea thunbergii (Planch.) André; Belgique Hort. 15: 184 (1865)
= Enkianthus biflorus Lour.; Fl. Cochinch. 1: 277 (1790)
= Iposues obovata Raf.; Autik. Bot. 186 (1840)
= Loiseleria indica (L.) Rchb.; Fl. Germ. Excurs. 1: 416 (1831)
= Rhododendron austrokiusianum Hatus.; J. Jap. Bot. 24: 81 (1949)
= Rhododendron balsaminiflorum (Carrière) T.Moore; Florist & Pomol. 1883: 81 (1883)
= Rhododendron brachycarpum Zucc. ex Maxim.; Mém. Acad. Imp. Sci. Saint Pétersbourg, Sér. 7, 16(9): 39 (1871), nom. illeg.
= Rhododendron buergeri Miq.; Ann. Mus. Bot. Lugduno-Batavi 1: 34 (1863)
= Rhododendron crispiflorum (Hook.) Planch.; Fl. Serres Jard. Eur. 9: 83 (1853)
= Rhododendron danielsianum Planch.; Fl. Serres Jard. Eur. 9: 79 (1854)
= Rhododendron decumbens D.Don ex G.Don; Gen. Hist. 3: 846 (1834)
= Rhododendron hangnoense Nakai; Bot. Mag. (Tokyo) 29: 261 (1915)
= Rhododendron hispidum D.Don; Edinburgh Philos. J. 6: 48 (1822)
= Rhododendron indicum f. balsaminiflorum (Carrière) Rehder; Bibliogr. Cult. Trees 514 (1949)
= Rhododendron indicum f. crispiflorum (Hook.) Rehder; Bibliogr. Cult. Trees 514 (1949)
= Rhododendron indicum f. laciniatum Makino; Bot. Mag. (Tokyo) 27: 110 (1910)
= Rhododendron indicum f. lateritium (Lindl.) Maxim.; Mém. Acad. Imp. Sci. Saint Pétersbourg, Sér. 7, 16(9): 39 (1870)
= Rhododendron indicum f. otakumi T.Yamaz.; J. Jap. Bot. 41: 348 (1966)
= Rhododendron indicum obtusum-album Anon.; Gard. & Forest 9: 394 (1896)
= Rhododendron indicum subvar. lateritium (Lindl.) Makino; Bot. Mag. (Tokyo) 27: 110 (1910)
= Rhododendron indicum var. balsaminiflorum (Carrière) G.Nicholson; Hand-List Trees Shrubs 2: 53 (1896)
= Rhododendron indicum var. brachytrichum Komatsu; Bot. Mag. (Tokyo) 31: (18) (1918)
= Rhododendron indicum var. crispiflorum (Hook.) C.K.Schneid.; Ill. Handb. Laubholzk. 2: 506 (1911)
= Rhododendron indicum var. kirishima Millais; Rhododendrons 193 (1917)
= Rhododendron indicum var. lateritium (Lindl.) DC.; Prodr. [A. P. de Candolle] 7: 726 (1839)
= Rhododendron indicum var. macranthum (Bunge) Maxim.; Mém. Acad. Imp. Sci. Saint Pétersbourg, Sér. 7, 16(9): 39 (1870)
= Rhododendron indicum var. obtusum (Lindl.) Maxim.; Mém. Acad. Imp. Sci. Saint Pétersbourg, Sér. 7, 16(9): 40 (1870)
= Rhododendron indicum var. rollissonii (T.Moore) Millais; Rhododendrons 183 (1917)
= Rhododendron indicum var. rosiflorum (Dean) Rehder; Stand. Cycl. Hort. 5: 2944 (1916)
= Rhododendron kiusianum var. sataense (Nakai) D.F.Chamb. & Rae; Edinburgh J. Bot. 47(2): 122 (1990)
= Rhododendron lateritium (Lindl.) Planch.; Fl. Serres Jard. Eur. 9: 80 (1853)
= Rhododendron lateritium var. brachytrichum Nakai; Bot. Mag. (Tokyo) 29: (261) (1915), nom. nud.
= Rhododendron macranthum (Bunge) G.Don; Gen. Hist. 3: 846 (1834)
= Rhododendron obtusum (Lindl.) Planch.; Fl. Serres Jard. Eur. 9: 80 (1853), nom. illeg.
= Rhododendron obtusum f. album (H.J.Veitch ex Mottet) C.K.Schneid.; Ill. Handb. Laubholzk. 2: 506 (1911)
= Rhododendron obtusum f. honkirishima Komatsu; Bot. Mag. (Tokyo) 32: (39) (1918)
= Rhododendron ramentaceum (Lindl.) Planch.; Fl. Serres Jard. Eur. 9: 81 (1853)
= Rhododendron sataense Nakai; Bull. Nat. Sci. Mus., Tokyo, No. 27, 33 (1949)
= Rhododendron sieboldii var. minor Miq.; Ann. Mus. Bot. Lugduno-Batavi 1: 33 (1863)
= Rhododendron sieboldii var. serrulatum Miq.; Ann. Mus. Bot. Lugduno-Batavi 1: 33 (1863)
= Rhododendron thunbergii Planch.; Fl. Serres Jard. Eur. 9: 78 (1853)
species :
Rhododendron insculptum
Kingdon-Ward; Gard. Chron., Ser. 3, 81: 251 (1927); Hutch. & Kingdon-Ward in Spec. Rhododendron, 821 (1930); Hutch. in Notes Bot. Gard. Edinb. 16: 182 (1931), latine
Distribution: Myanmar (Kachin)
41 MYA
species :
Rhododendron insigne
Hemsl. & E.H.Wilson; Bull. Misc. Inform. Kew 1910(4): 113 (1910)
Distribution: China (SW-Sichuan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Argyrophylla
variant :
var. hejiangense
(W.P.Fang) M.Y.Fang; Fl. Reipubl. Popularis Sin. 57(2): 152 (1995)
Distribution: China (S-Sichuan)
36 CHI
Synonyms: hidden
= Rhododendron argyrophyllum subsp. hejiangense W.P.Fang; Acta Phytotax. Sin. 21(4): 457, f. 1 (1983)
= Rhododendron insigne var. hejiangense (Fang) M.Y.Fang; Bull. Bot. Res. North-East. Forest. Inst. 12(3): 219 (1992)
species :
Rhododendron intranervatum
Sleumer; Blumea 11: 129 (1961)
Distribution: S-Borneo
42 BOR
Remarks: Subgen. Rhododendron
species :
Rhododendron intricatum
Franch.; J. Bot. [Morot] 9: 395 (1895)
Distribution: China (W-Sichuan, NW-Yunnan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Lapponica
Synonyms: hidden
= Rhododendron blepharocalyx Franch.; J. Bot. [Morot] 9: 396 (1895)
= Rhododendron peramabile Hutch.; Gard. Chron. 1932, Ser. 3, 91: 366 (1932)
species :
Rhododendron invictum
Balf.f. & Farrer; Notes Roy. Bot. Gard. Edinburgh 10: 116 (1917)
Distribution: China (S-Gansu)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Heliolepida
species :
Rhododendron irroratum
Franch.; Bull. Soc. Bot. France 34: 280 (1887)
subspecies :
subsp. irroratum
Distribution: China (NW-Guizhou, SW-Sichuan, N-Yunnan); Myanmar (Kachin, Sagaing)
36 CHI 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Irrorata
Synonyms: hidden
= Azalea irrorata (Franch.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron maximowiczianum H.Lév.; Bull. Soc. Agric. Sarthe 39: 47 (1903)
= Rhododendron ningyuenense Hand.-Mazz.; Anz. Akad. Wiss. Wien, Math.-Naturwiss. Kl. 57: 288 (1920)
subspecies :
subsp. kontumense
(Sleumer) Chamb.; Notes Roy. Bot. Gard. Edinburgh 36(1): 117 (1978)
Distribution: C-Vietnam
41 VIE
Synonyms: hidden
= Rhododendron kontumense Sleumer; Blumea, Suppl. 4, 54 (1958)
= Rhododendron langbianense A.Chev. ex Dop; Fl. Indo-Chine [P.H.Lecomte et al.] 3: 745 (1930)
subspecies :
subsp. pogonostylum
(Balf.f. & W.W.Sm.) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 36(1): 117 (1978)
Distribution: China (W-Guizhou, SE-Yunnan); N-Vietnam
36 CHI 41 VIE
Synonyms: hidden
= Rhododendron adenostemomum Balf. & W.W.Sm.; Trans. Bot. Soc. Edin. 27: 174 (1917)
= Rhododendron pogonostylum Balf.f. & W.W.Sm.; Trans. Bot. Soc. Edinburgh 27(2): 210-214 (1917)
subspecies :
subsp. yiliangense
M.Rob. & McQuire ex N.Lancaster; Rhododendrons Magnolias Camellias 62: 119 (2011)
Distribution: China (Yunnan)
36 CHI
species :
Rhododendron japonicum
(A.Gray) Suringar; Gartenflora 57: 517 (1908)
Name: Japanese azalea
Distribution: Japan; USA [I] (Connecticut [I], New Jersey [I])
38 JAP 75 usa
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Pontica
Synonyms: hidden
= Azalea japonica A.Gray; Mem. Amer. Acad. N. S. 6: 400 (1858 publ. 1859)
= Azalea macrostemon (Maxim.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Azalea mollis var. glabrior (Miq.) Regel; Gartenflora 16: 289 (1867)
= Azalea sinensis var. glabrior (Miq.) Maxim.; Index Sem. (St. Petersburg [Petropolitanus]) 1868(Suppl.): 11 (1869 publ. 1870)
= Rhododendron japonicum f. aureum E.H.Wilson; Wils. & Rehd., Monogr. Azaleas 102 (1921)
= Rhododendron japonicum f. canescens Sugim.; J. Geobot. 22: 52 (1975)
= Rhododendron japonicum f. flavum (Miyoshi) Nakai; Nakai & G. Koidz., Trees Shrubs Japan, rev. ed. 82 (1927)
= Rhododendron japonicum f. glaucophyllum (Nakai) H.Hara; Enum. Spermatophytarum Japon. 1: 36 (1948)
= Rhododendron japonicum f. multifidum Nakai; Nakai & G. Koidz., Trees Shrubs Japan, rev. ed. 82 (1927)
= Rhododendron japonicum var. glaucophyllum Nakai; Nakai & G. Koidz., Trees Shrubs Japan, rev. ed. 82 (1927)
= Rhododendron macrostemon Maxim.; Mém. Acad. Imp. Sci. Saint Pétersbourg, Sér. 7, 16(9): 41 (1871)
= Rhododendron molle f. canescens (Sugim.) Yonek.; J. Jap. Bot. 80: 327 (2005)
= Rhododendron molle f. flavum (Miyoshi) Yonek.; J. Jap. Bot. 80: 327 (2005)
= Rhododendron molle f. glaucophyllum (Nakai) Yonek.; J. Jap. Bot. 80: 327 (2005)
= Rhododendron molle f. multifidum (Nakai) Yonek.; J. Jap. Bot. 80: 327 (2005)
= Rhododendron molle subsp. japonicum (A.Gray) Kron; Edinburgh J. Bot. 50(3): 279 (1993)
= Rhododendron molle var. glabrior Miq.; Ann. Mus. Bot. Lugduno-Batavi 1: 33 (1846)
= Rhododendron sinense f. flavum Miyoshi; Saishin Shokubutsugaku Kôgi 3: t. 32 (1921)
species :
Rhododendron japonoheptamerum
Kitam.; Acta Phytotax. Geobot. 38: 382 (1987), nom. nov.
Distribution: Japan (Honshu, Shikoku, Kyushu)
38 JAP
Synonyms: hidden
= Azalea japonica (Blume) Kuntze; Revis. Gen. Pl. 2: 386 (1891)
= Hymenanthes japonica Blume; Bijdr. Fl. Ned. Ind. 862 (1826)
= Rhododendron degronianum subsp. heptamerum (Maxim.) H.Hara; J. Jap. Bot. 61(8): 246 (1986)
= Rhododendron degronianum var. heptamerum (Maxim.) Sealy ex Davidian; Rhododendron Species, 3 (Ser. Neriiflorum-Thomsonii, etc.): 161 (1992)
= Rhododendron hymenanthes Makino; Bot. Mag. (Tokyo) 16: 33 (1902)
= Rhododendron hymenanthes var. heptamerum (Maxim.) Makino; Bot. Mag. (Tokyo) 16: 33 (1902)
= Rhododendron japonicum (Blume) C.K.Schneid.; Ill. Handb. Laubholzk. 2: 490 (1909), nom. illeg.
= Rhododendron japonoheptamerum f. albiflorum (Takeda) T.Yamaz.; Fl. Japan 3a: 41 (1993)
= Rhododendron maximum Thunb.; Fl. Jap. 181 (1784), nom. illeg.
= Rhododendron metternichii f. albiflorum Takeda; Engei Dai-jiten 3: 1120 (1953)
= Rhododendron metternichii f. latifolium Sugim.; J. Geobot. 22(4): 53 (1975)
= Rhododendron metternichii Siebold & Zucc.; Fl. Jap. 1: 23 (1835), nom. superfl.
= Rhododendron metternichii var. heptamerum Maxim.; Mém. Acad. Imp. Sci. Saint Pétersbourg, Sér. 7, 16(9): 21 (1870)
variant :
var. hondoense
(Nakai) Kitam.; Acta Phytotax. Geobot. 38: 382 (1987)
Distribution: Japan (Honshu, Shikoku)
38 JAP
Synonyms: hidden
= Rhododendron degronianum var. hondoense (Nakai) H.Hara; J. Jap. Bot. 61(8): 246 (1986)
= Rhododendron japonoheptamerum f. leucanthum (Nakai) T.Yamaz.; Fl. Japan 3a: 41 (1993)
= Rhododendron metternichii f. leucanthum Nakai; Nakai & G. Koidz., Trees Shrubs Japan, rev. ed. 65 (1927)
= Rhododendron metternichii var. hondoense Nakai; Bot. Mag. (Tokyo) 1924: 26 (1924)
variant :
var. kyomaruense
(T.Yamaz.) T.Yamaz.; Fl. Japan, 3a: 41 (1993)
Distribution: Japan (Honshu)
38 JAP
Synonyms: hidden
= Rhododendron degronianum var. kyomaruense (T.Yamaz.) H.Hara; J. Jap. Bot. 61: 246 (1986)
= Rhododendron metternichii var. kyomaruense T.Yamaz.; J. Jap. Bot. 39: 17 (1964)
variant :
var. okiense
(T.Yamaz.) T.Yamaz.; Fl. Japan, 3a: 42 (1993)
Distribution: Japan (Oki Isl.)
38 JAP
Synonyms: hidden
= Rhododendron degronianum var. okiense T.Yamaz.; (1989)
= Rhododendron metternichii f. brevifolium Takeda; Engei Dai-jiten 3: 1120 (1951), nom. illeg.
species :
Rhododendron jasminiflorum
T.Moore & Ayres; Gard. Mag. Bot. 1: 251 (1850)
subspecies :
subsp. jasminiflorum
Distribution: peninsular Malaysia (Gunung Ledang, Johor, Kedah, Perak, Pahang)
42 MLY
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Azalea jasminiflora (Hook.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron elongatum Blume; Fl. Javae, Pl. Inéd., t. 7, f. 1 (1863-1883)
= Rhododendron jasminiflorum var. maculatum Ridl.; Fl. Malay Penins. 2: 218 (1923)
= Rhododendron jasminiflorum var. punctatum Ridl.; J. Fed. Malay States Mus. 4: 42 (1909)
subspecies :
subsp. chamaepitys
(Sleumer) Argent; Rhododendrons subgen. Vireya 158 (2006)
Distribution: Borneo
42 BOR
Synonyms: hidden
= Rhododendron chamaepitys Sleumer; Bot. Jahrb. Syst. 71: 144 (1940)
subspecies :
subsp. copelandii
(Merr.) Argent; Rhododendrons subgen. Vireya 159 (2006)
Distribution: Philippines (Mindanao)
42 PHI
Synonyms: hidden
= Rhododendron copelandii Merr.; Philipp. Gov. Lab. Bur. Bull. 29: 42 (1905)
= Rhododendron jasminiflorum var. copelandii (Merr.) Sleumer; Reinwardtia 5: 130 (1960)
subspecies :
subsp. heusseri
(J.J.Sm.) Argent; Rhododendrons subgen. Vireya 159 (2006)
Distribution: Sumatra
42 SUM
Synonyms: hidden
= Rhododendron jasminiflorum var. heusseri (J.J.Sm.) Sleumer; Reinwardtia 5: 129 (1960)
= Rhododendron longiflorum var. heusseri J.J.Sm.; Bull. Jard. Bot. Buitenzorg, Sér. 3, 13: 447 (1935)
subspecies :
subsp. oblongifolium
(Sleumer) Argent; Rhododendrons subgen. Vireya 160 (2006)
Distribution: peninsular Malaysia (P. Tioman, Gunung Belumut, Johor); Borneo
42 BOR MLY
Synonyms: hidden
= Rhododendron jasminiflorum var. oblongifolium Sleumer; Reinwardtia 5: 130 (1960)
species :
Rhododendron jasminoides
M.Y.He; J. Sichuan Univ., Nat. Sci. Ed. 1984(1): 93, photo. 1 (1984)
Distribution: China (Guangxi)
36 CHI
species :
Rhododendron javanicum
(Blume) Benn.; Pl. Jav. Rar. 85. t. 19 (1823)
subspecies :
subsp. javanicum
Distribution: Sumatra (incl. Lingga Arch.); Borneo (Natuna Isl.); Java; Lesser Sunda Isl. (Bali)
42 BOR JAW LSI SUM
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Azalea javanica (Blume) Kuntze; Revis. Gen. Pl. 1: 387 (1891)
= Rhododendron javanicum var. gymnocarpum Hochr.; Candollea 2: 490 (1925)
= Vireya javanica Blume; Bijdr. Fl. Ned. Ind. 854 (1826)
subspecies :
subsp. argentii
Mambrasar, Warseno & Kusw.; Edinburgh J. Bot. 81-1962: 4 (2024)
Distribution: Lesser Sunda Isl. (Bali)
42 LSI
subspecies :
subsp. brookeanum
(H.Low ex Lindl.) Argent & Phillipps; Bot. J. Linn. Soc. 85: 15 (1982)
Distribution: Borneo
42 BOR
Synonyms: hidden
= Azalea brookeana (H.Low ex Lindl.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron brookeanum H.Low ex Lindl.; J. Hort. Soc. 3: 82 (1848)
= Rhododendron brookeanum var. flavum Veitch ex J.Dix; Proc. Roy. Hort. Soc. London 1: 165 (1860)
subspecies :
subsp. cladotrichum
(Sleumer) Argent; Rhododendrons subgen. Vireya 247 (2006)
Distribution: EC-Borneo
42 BOR
Synonyms: hidden
= Rhododendron cladotrichum (Sleumer) Craven; J. Adelaide Bot. Gard. 27(4): 28 (2014)
= Rhododendron brookeanum var. cladotrichum Sleumer; Reinwardtia 5: 224 (1960)
subspecies :
subsp. gracile
(H.Low ex Lindl.) Argent, A.Lamb & Phillipps; Notes Roy. Bot. Gard. Edinburgh 42: 114 (1984)
Distribution: Borneo; Brunei
42 BOR BRN
Synonyms: hidden
= Rhododendron brookeanum subsp. gracile (H.Low ex Lindl.) Argent; Edinburgh J. Bot. 52(3): 364 (1995)
= Rhododendron gracile H.Low ex Lindl.; J. Hort. Soc. 3: 84 (1848)
= Rhododendron javanicum var. gracile (H.Low ex Lindl.) Sleumer
= Rhododendron obscurinervium Merr.; J. Straits Branch Roy. Asiat. Soc. 76: 109 (1917)
subspecies :
subsp. kinabaluense
(Argent, A.Lamb & Phillipps) Argent; Rhododendrons subgen. Vireya 248 (2006)
Distribution: Borneo (Sabah)
42 BOR
Synonyms: hidden
= Rhododendron brookeanum var. kinabaluense (Argent, A.Lamb & Phillipps) Argent; Edinburgh J. Bot. 52: 363 (1995)
= Rhododendron javanicum var. kinabaluense Argent, A.Lamb & Phillipps; Notes Roy. Bot. Gard. Edinburgh 42: 113 (1984)
= Rhododendron kinabaluense (Argent, A.Lamb & Phillipps) Craven; J. Adelaide Bot. Gard. 27: 29 (2014), nom. illeg.
subspecies :
subsp. moultonii
(Ridl.) Argent; Bot. J. Linn. Soc. 85: 16 (1982)
Distribution: Borneo
42 BOR
Synonyms: hidden
= Rhododendron brookeanum var. moultonii (Ridl.) Argent; Edinburgh J. Bot. 52(3): 364 (1995)
= Rhododendron moultonii Ridl.; J. Straits Branch Roy. Asiat. Soc. 63: 61 (1912)
subspecies :
subsp. palawanense
Argent; Gard. Bull. Singapore 56(1-2): 90 (2004)
Distribution: Palawan
42 PLW
Synonyms: hidden
= Rhododendron palawanense (Argent) Craven; J. Adelaide Bot. Gard. 27(4): 29 (2014)
subspecies :
subsp. schadenbergii
(Warb.) Argent; Edinburgh J. Bot. 52(3): 364 (1995)
Distribution: NE-Sulawesi; Palawan; Philippines (Luzon, Camiguin, Jolo, Mindanao)
42 PHI PLW SUL
Synonyms: hidden
= Rhododendron clementis Merr.; Philipp. J. Sci. 52: 160 (1908)
= Rhododendron javanicum var. schadenbergii (Warb.) Sleumer; Reinwardtia 5: 195 (1960)
= Rhododendron sarasinorum Warb.; K. F. Sarasin, Reis. Celebes 2: 386 (1905)
= Rhododendron schadenbergii Warb.; Fragm. Fl. Philipp. [Perkins] 172 (1905)
= Rhododendron spectabile Merr.; Philipp. Gov. Lab. Bur. Bull. 29: 42 (1905)
subspecies :
subsp. teysmannii
(Miq.) Argent; Rhododendrons subgen. Vireya 249 (2006)
Distribution: peninsular Malaysia (Kelantan, Pahang); Sumatra; Lesser Sunda Isl.
42 LSI MLY SUM
Synonyms: hidden
= Azalea teysmannii (Miq.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron basirotundatum J.J.Sm.; Contr. Arnold Arbor. 8: 124 (1934)
= Rhododendron javanicum var. teysmannii (Miq.) King & Gamble; J. Asiat. Soc. Bengal, Pt. 2, Nat. Hist. 74: 75 (1905)
= Rhododendron teysmannii Miq.; Fl. Ned. Ind., Eerste Bijv. 585 (1861)
species :
Rhododendron jiewhoei
Argent; Rhododendrons subgen. Vireya 259 (2006)
Distribution: Borneo (Sabah)
42 BOR
species :
Rhododendron jinboense
Xiang Chen & X.Chen; J. Trop. Subtrop. Bot. 18(3): 260 (2010)
Distribution: China (Guizhou)
36 CHI
species :
Rhododendron jinchangense
Z.H.Yang; Acta Phytotax. Sin. 35(2): 186-187, f. 1 (1997)
Distribution: China (Yunnan)
36 CHI
species :
Rhododendron jingangshanicum
P.C.Tam; Bull. Bot. Res., Harbin 2(1): 89 (1982)
Distribution: China (SW-Jiangxi)
36 CHI
species :
Rhododendron jinpingense
W.P.Fang & M.Y.He; Bull. Bot. Res., Harbin 2(2): 85-86, pl. 4 (1982)
Distribution: China (NE-Guangxi)
36 CHI
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
species :
Rhododendron jinxiuense
W.P.Fang & M.Y.He; Bull. Bot. Res., Harbin 2(2): 89, pl. 7 (1982)
Distribution: China (E-Guangxi)
36 CHI
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
species :
Rhododendron jiulongshanense
Xiang Chen & Jia Y.Huang; Ann. Bot. Fenn. 47(5): 399 (2010)
Distribution: China (Guizhou)
36 CHI
species :
Rhododendron johnstoneanum
G.Watt ex Hutch.; Notes Roy. Bot. Gard. Edinburgh 12: 72 (1919)
Distribution: India (Manipur, Mizoram, Nagaland); Myanmar (Chin, Kachin)
40 IND 41 MYA
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Maddenia
Synonyms: hidden
= Rhododendron formosum var. johnstonianum Brandis; Indian Trees 411 (1906)
species :
Rhododendron joniense
Ching & H.P.Yang; Bull. Bot. Res. North-East. Forest. Inst. 3(2): 95 (1983)
Distribution: China (S-Gansu)
36 CHI
species :
Rhododendron kaempferi
Planch.; Fl. des Serres 9: 77 (1853 publ. 1854)
Distribution: Japan (Hokkaido, Honshu, Shikoku, Kyushu)
38 JAP
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
Synonyms: hidden
= Azalea indica var. kaempferi (Planch.) Rehder; Cycl. Amer. Hort. [L.H.Bailey] 1: 122 (1900)
= Azalea kaempferi (Planch.) André; Belgique Hort. 15: 184 (1865)
= Rhododendron indicum var. kaempferi (Planch.) Maxim.; Mém. Acad. Imp. Sci. Saint Pétersbourg, Sér. 7, 16(9): 38 (1870)
= Rhododendron kaempferi f. kozushimense T.Yamaz.; Revis. Gen. Rhododendron Japan, Taiwan, Korea & Sakhalin 60 (1996)
= Rhododendron obtusum f. album Nakai; Bot. Mag. (Tokyo) 29: 261 (1915), nom. illeg.
= Rhododendron obtusum f. komatsui (Nakai) H.Hara; Enum. Spermatophytarum Japon. 1: 37 (1948)
= Rhododendron obtusum var. kaempferi (Planch.) E.H.Wilson; Wils. & Rehd., Monogr. Azaleas 38 (1921)
= Rhododendron scabrum var. kaempferi (Planch.) Nakai; Bot. Mag. (Tokyo) 33: 208 (1919)
= Rhododendron sieboldii Miq.; Ann. Mus. Bot. Lugduno-Batavi 1: 33 (1863)
variant :
var. iyoense
(Nakai) Sugim.; J. Geobot. 22(4): 52 (1975)
Distribution: Japan
38 JAP
Synonyms: hidden
= Rhododendron iyoense Nakai; Bot. Mag. (Tokyo) 43: 447 (1929)
variant :
var. lusidusculum
(Nakai) Sugim.; J. Geobot. 22(4): 52 (1975)
Distribution: Japan
38 JAP
Synonyms: hidden
= Rhododendron lusidusculum Nakai; Nakai & Koidz. Trees & Shrubs Japan Proper, ed. 1, 103 (1922), japonice
variant :
var. macrogemmum
Nakai; Nakai & G. Koidz., Trees Shrubs Japan 103 (1922)
Distribution: Japan (Honshu)
38 JAP
Synonyms: hidden
= Rhododendron macrogemmum (Nakai) Nakai; Bot. Mag. (Tokyo) 45: 128 (1931)
= Rhododendron obtusum var. macrogemma (Nakai) Kitam.; Acta Phytotax. Geobot. 25: 37 (1972)
variant :
var. mikawanum
(Makino) Makino; J. Jap. Bot. 1: 18 (1917)
Distribution: Japan (Honshu)
38 JAP
Synonyms: hidden
= Rhododendron indicum var. mikawanum Makino; Bot. Mag. (Tokyo) 23: 251 (1909)
= Rhododendron obtusum var. mikawanum (Makino) T.Yamaz.; Fl. Japan 3a: 27 (1993)
variant :
var. saikaiense
(T.Yamaz.) T.Yamaz.; Rev. Gen. Rhododendron Japan, Taiwan, Korea Sakhalin 61 (1996)
Distribution: Japan (Kyushu)
38 JAP
Synonyms: hidden
= Rhododendron obtusum var. saikaiense T.Yamaz.; Fl. Japan, 3a: 28 (1993)
variant :
var. tubiflorum
Komatsu; Ic. Pl. Koisik. 4: 7, t. 216 (1918)
Distribution: Japan (Honshu)
38 JAP
Synonyms: hidden
= Rhododendron obtusum f. tubiflorum (Komatsu) Makino; Ill. Fl. Nippon 255 (1940)
= Rhododendron obtusum var. tubiflorum (Komatsu) T.Yamaz.; Fl. Japan, 3a: 28 (1993)
species :
Rhododendron kailiense
W.P.Fang & M.Y.He; Bull. Bot. Res., Harbin 2(2): 83, pl. 2 (1982)
Distribution: China (W-Guizhou)
36 CHI
species :
Rhododendron kanehirae
E.H.Wilson; Wilson & Rehder, Monogr. Azaleas, 28 (1921)
Distribution: N-Taiwan
38 TAI
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
species :
Rhododendron kansuense
Millais; Rhododendrons, Ser. 2: 67 (1924)
Distribution: China (Gansu)
36 CHI
species :
Rhododendron kasoense
Hutch. & Kingdon-Ward; Spec. Rhododendron, 787 (1930); Hutch. in Notes Roy. Bot. Gard. Edinburgh 16: 181 (1931), latine
Distribution: SE-Tibet; NE-India (Arunachal Pradesh); Myanmar (Kachin)
36 TIB 40 IND 41 MYA
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Monantha
species :
Rhododendron katsumatae
(M.Tash. & H.Hatta) Craven; Blumea 56(1): 34 (2011)
Distribution: Japan (Honshu)
38 JAP
Synonyms: hidden
= Menziesia katsumatae f. duplex (Satomi & M.Hashim.) Satomi; J. Phytogeogr. Taxon. 36(2): 112 (1988)
= Menziesia katsumatae M.Tash. & H.Hatta; Bot. Mag. (Tokyo) 99 (1053): 29 (1986)
= Menziesia multiflora f. duplex Satomi & M.Hashim.
species :
Rhododendron kawakamii
Hayata; J. Coll. Sci. Imp. Univ. Tokyo 30: Art. 1, 171 (1911)
Distribution: Taiwan
38 TAI
Synonyms: hidden
= Rhododendron taiwanianum S.S.Ying; Quart. J. Chin. Forest. 9(4): 116 (1976) (nom. nov. superfl.)
= Rhododendron kawakamii var. flaviflorum Tang S.Liu & T.I.Chuang; Quart. J. Taiwan Mus. 13: 64 (1960)
species :
Rhododendron keiskei
Miq.; Ann. Mus. Bot. Lugduno-Batavi 2: 163 (1866)
Distribution: Japan (Honshu, Shikoku, Kyushu)
38 JAP
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Triflora
Synonyms: hidden
= Azalea keiskei (Miq.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Azalea jodogawa Hassk.; Cat. Hort. Bot. Bogor. Alt. 162 (1844)
= Rhododendron jodogawa Hassk.; Cat. Hort. Bot. Bogor. Alt. 162 (1844)
= Rhododendron keiskei var. cordifolium Masam.; J. Trop. Agric. 4: 195 (1932)
= Rhododendron laticostum Ingram; Rhododendron Camellia Year Book 35: 30 (1970)
= Rhododendron trichocalyx Ingram; Rhododendron Camellia Year Book 35: 33 (1970)
variant :
var. hypoglaucum
Sutô & Suzuki; Trans. Nat. Hist. Soc. Formosa 22: 23 (1932)
Distribution: Japan (Honshu)
38 JAP
Synonyms: hidden
= Rhododendron subnikomontanum Sutô & T.Suzuki; Nogakukenkyukwai-kwaisi (Utunomiya), No. 6, 31 (1930)
variant :
var. ozawae
T.Yamaz.; Fl. Japan, 3a: 20 (1993)
Distribution: Japan (Yakushima Isl.)
38 JAP NNS
species :
Rhododendron keleticum
Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13: 50 (1920)
Distribution: China (NW-Yunnan); SE-Tibet; Myanmar
36 CHI TIB 41 MYA
Synonyms: hidden
= Rhododendron calostrotum subsp. keleticum (Balf.f. & Forrest) Cullen; Notes Roy. Bot. Gard. Edinburgh 36(1): 112 (1978)
= Rhododendron radicans Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13: 290 (1922)
species :
Rhododendron kemulense
J.J.Sm.; Bull. Jard. Bot. Buitenz., Ser. 3, 13: 448 (1935)
Distribution: C-Borneo
42 BOR
Remarks: Subgen. Rhododendron
species :
Rhododendron kendrickii
Nutt.; Mag. Nat. Hist. 12: 10 (1853)
Distribution: E-Tibet; Bhutan; NE-India (Arunachal Pradesh); Myanmar (Kachin)
36 TIB 40 BHU IND 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Irrorata
Synonyms: hidden
= Azalea kendrickii (Nutt.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Azalea shepherdii (Nutt.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron pankimense Cowan & Kingdon-Ward; Notes Roy. Bot. Gard. Edinburgh 19(93): 180-182 (1936)
= Rhododendron shepherdii Nutt.; Hooker´s J. Bot. Kew Gard. Misc. 5: 360 (1853)
species :
Rhododendron kerowagiense
Argent; Folia Malaysiana 4(2): 108 (2003)
Distribution: New Guinea (Papua New Guinea)
42 NWG
species :
Rhododendron kesangiae
D.G.Long & Rushforth; Notes Roy. Bot. Gard. Edinburgh 45(2): 331 (1988 publ. 1989)
Distribution: Bhutan
40 BHU
Synonyms: hidden
= Rhododendron kesangiae var. album Namgyel & D.G.Long; New Plantsman 2: 68 (1995)
species :
Rhododendron keysii
Nutt.; Hooker´s J. Bot. Kew Gard. Misc. 5: 353 (1853)
Distribution: SE-Tibet; S-Tibet; Bhutan; N-India (Arunachal Pradesh)
36 TIB 40 BHU IND
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Cinnabarina
Synonyms: hidden
= Azalea keysii (Nutt.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron keysii var. unicolor Hutch.; J. Roy. Hort. Soc. 59: xxxix (1934)
species :
Rhododendron kiangsiense
W.P.Fang; Acta Phytotax. Sin. 7: 192 (1958)
Distribution: China (Jiangxi)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Maddenia
species :
Rhododendron kingianum
Watt; Gard. Chron., Ser. 3, 26: 306 (1899)
Distribution: NE-India (Arunachal Pradesh)
40 IND
Synonyms: hidden
= Rhododendron arboreum subsp. kingianum (Watt) Tagg; Stevenson, Spec. Rhododendron 15 (1930)
species :
Rhododendron kiusianum
Makino; Bot. Mag. (Tokyo) 28: 174 (1914)
Distribution: Japan (Kyushu)
38 JAP
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
Synonyms: hidden
= Rhododendron indicum f. japonicum Maxim.; Mém. Acad. Imp. Sci. Saint Pétersbourg, Sér. 7, 16(9): 41 (1870)
= Rhododendron indicum var. japonicum (Maxim.) Makino; Bot. Mag. (Tokyo) 22: 56 (1908)
= Rhododendron kaempferi var. japonicum (Maxim.) Rehder; Sarg., Trees & Shrubs 2: 30 (1907)
= Rhododendron kiusianum f. albiflorum Honda & Maeda; Nom. Pl. Jap., ed. emend. 385 (1957)
= Rhododendron kiusianum f. maedae Honda; Nom. Pl. Jap., ed. emend. 385 (1957)
= Rhododendron obtusum f. japonicum (Maxim.) E.H.Wilson; Wils. & Rehd., Monogr. Azaleas 33 (1921)
= Rhododendron obtusum var. japonicum (Maxim.) Kitam.; Acta Phytotax. Geobot. 25(2-3): 37 (1972)
= Rhododendron ×amoenum var. japonicum (Maxim.) Bean; Trees & Shrubs Brit. Isles 2: 341 (1914)
species :
Rhododendron kiyosumense
(Makino) Makino; Makino & Nemoto, Fl. Jap. ed. 2, 880 (1931)
Distribution: Japan (Honshu)
38 JAP
Remarks: Subgen. Tsutsusi, Sect. Brachycalyx
Synonyms: hidden
= Azalea kiyosumensis Makino; J. Jap. Bot. 6: 18 (1929)
= Rhododendron dilatatum var. kiyosumense (Makino) Hatus.; Sci. Rep. Yokosuka City Mus. 15: 22 (1969)
= Rhododendron kiyosumense f. glabrescens Minamit.; J. Jap. Bot. 94: 239 (2019)
= Rhododendron shimidzuanum Honda ex Makino & Nemoto; Fl. Japan., ed. 2 (Makino & Nemoto) 890 (1931), japonice
species :
Rhododendron kochii
Stein; Gartenflora 32: 193. t. 1195 (1885)
Distribution: ?Palawan; Philippines (Luzon, Mindoro, Negros, Mindanao)
42 PHI
Remarks: Subgen. Rhododendron
species :
Rhododendron kogo
Danet; Adansonia 29(1): 106 (2007)
Distribution: New Guinea (Irian Jaya)
42 NWG
species :
Rhododendron komiyamae
Makino; Three Pl. New Jap. 1 (1925); Makino in J. Jap. Bot. 3: 17 (1926)
Distribution: Japan (Honshu)
38 JAP
Synonyms: hidden
= Rhododendron surugaense Sugim. ex Kurata; Ill. For. Trees Jap. 4: 166, t. 37 (1973)
species :
Rhododendron kongboense
Kingdon-Ward ex Hutch.; Bot. Mag. 160: t. 9492 (1937)
Distribution: S-Tibet; Bhutan
36 TIB 40 BHU
Remarks: Subgen. Rhododendron, Sect. Pogonanthum
species :
Rhododendron konori
Becc.; Malesia 1: 200 (1878)
Distribution: New Guinea (Irian Jaya, Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron astrapiae F.Först.; Repert. Spec. Nov. Regni Veg. 13: 224 (1914)
= Rhododendron devrieseanum Koord.; Nova Guinea 8: 185 (1909)
= Rhododendron devrieseanum subsp. astrapiae F.Först.; (1914)
= Rhododendron heptaster Gilli; Ann. Naturhist. Mus. Wien 83: 434 (1979 publ. 1980)
= Rhododendron toverenae F.Muell.; Vict. Naturalist 1: 101 (1884)
variant :
var. phaeopeplum
(Sleumer) Argent; Edinburgh J. Bot. 52(3): 364 (1995)
Distribution: New Guinea (Irian Jaya)
42 NWG
Synonyms: hidden
= Rhododendron phaeopeplum Sleumer; Reinwardtia 5: 92 (1960)
species :
Rhododendron korthalsii
Miq.; Ann. Mus. Bot. Lugduno-Batavi 1: 43 (1863)
Distribution: C-Sumatra
42 SUM
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Irrorata
species :
Rhododendron kotschyi
Simonk.; Enum. Fl. Transsilv. 389 (1886)
Distribution: North Macedonia; ?Albania; Romania; Bulgaria; Ukraine
13 BUL NMA ROM 14 UKR
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Rhododendron
Synonyms: hidden
= Rhododendron ferrugineum album Millais; Rhododendrons 164 (1917), nom. illeg.
= Rhododendron ferrugineum subsp. kotschyi (Simonk.) Hayek
= Rhododendron ferrugineum var. myrtifolium (Schott & Kotschy) Schröt.; Pflanzenleben Alp. 113 (1904)
= Rhododendron kotschyi f. album Rehder; Bibliogr. Cult. Trees 510 (1949)
= Rhododendron myrtifolium Schott & Kotschy; Bot. Zeitung (Berlin) 9: 17 (1851), nom. illeg.
species :
Rhododendron kroniae
Craven; Blumea 56(1): 34 (2011), nom. nov.
Distribution: Japan (Kyushu)
38 JAP
Synonyms: hidden
= Menziesia purpurea Maxim.; Bull. Acad. Imp. Sci. Saint-Pétersbourg, Sér. 3, 11: 431 (1867)
species :
Rhododendron kuomeianum
Yu H.Chang, J.Nielsen & Y.P.Ma; Pl. Diversity 43(4): 296 (2021)
Distribution: China (Yunnan)
36 CHI
species :
Rhododendron kwangsiense
Hu; Iconogr. Cormophyt. Sin. 3: 149, f. 4252 (1974); et ex P. C. Tam, Survey Genus Rhododendron S. China 56, 105, f. 7 (1983); et ex W. P. Fang, Bull. Bot. Res., Harbin 3(4): 40-42, f. 2 (1983)
Distribution: China (W-Guangdong, N-Guangxi, SE-Guizhou, W-Hunan)
36 CHI
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
Synonyms: hidden
= Rhododendron kwangsiense var. salicinum P.C.Tam; Guihaia 3(3): 178 (1983)
= Rhododendron kwangsiense var. subfalcatum P.C.Tam; Guihaia 3(3): 178 (1983)
= Rhododendron mariae subsp. kwangsiense (Hu ex P.C.Tam) D.F.Chamb. & Rae; Edinburgh J. Bot. 47(2): 106 (1990)
= Rhododendron tiantangense G.Z.Li; Guihaia 15(4): 298-299, t. 2, f. 10-14 (1995)
variant :
var. obovatifolium
P.C.Tam; Guihaia 3(3): 178 (1983)
Distribution: China (SW-Guangdong)
36 CHI
species :
Rhododendron kwangtungense
Merr. & Chun; Sunyatsenia 1(1): 76-77 (1930)
Distribution: China (Guangdong, NE-Guangxi, Guizhou, S-Hunan)
36 CHI
Synonyms: hidden
= Rhododendron fongkaiense C.N.Wu & P.C.Tam; Med. Mat. Guangdong 4: 34, f. 2 (1978)
= Rhododendron rivulare var. kwangtungense (Merr. & Chun) X.F.Jin & B.Y.Ding; Taxon. Study Rhododendron subgen. Tsutsusi 135 (2009)
species :
Rhododendron kyawii
Lace & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 8: 216 (1914)
Distribution: China (W-Yunnan); NE-Myanmar (Kachin)
36 CHI 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Parishia
Synonyms: hidden
= Rhododendron agapetum Balf.f. & Kingdon-Ward; Notes Roy. Bot. Gard. Edinburgh 9(44-45): 212-213 (1916)
= Rhododendron prophantum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 58 (1920)
species :
Rhododendron kyushuense
Minamit.; J. Jap. Bot. 93(2): 101 (2018)
Distribution: Japan
38 JAP
Synonyms: hidden
= Rhododendron kyushuense f. albiflorum Minamit.; J. Jap. Bot. 93(2): 102 (2018)
= Rhododendron kyushuense f. glabrescens (Nakai & H.Hara) Minamit.; J. Jap. Bot. 94(4): 238 (2019)
= Rhododendron reticulatum f. glabrescens (Nakai & H.Hara) T.Yamaz.; Fl. Japan 3a: 37 (1993)
= Rhododendron reticulatum var. glabrescens Nakai & H.Hara; J. Jap. Bot. 11: 824 (1935)
species :
Rhododendron labolengense
Ching & H.P.Yang; Bull. Bot. Res. North-East. Forest. Inst. 3(2): 94 (1983)
Distribution: China (S-Gansu)
36 CHI
species :
Rhododendron lacteum
Franch.; Bull. Soc. Bot. France 33: 231 (1886)
Distribution: China (W-Yunnan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Taliensia
Synonyms: hidden
= Azalea lactea (Franch.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron mairei H.Lév.; Repert. Spec. Nov. Regni Veg. 12(325-330): 285 (1913)
species :
Rhododendron laetum
J.J.Sm.; Nova Guinea 12: 139 (1914)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron uliginosum J.J.Sm.; Nova Guinea 12: 136 (1914)
species :
Rhododendron lagopus
Nakai; Bot. Mag. (Tokyo) 40: 483 (1926)
Distribution: Japan (Honshu)
38 JAP
Remarks: Subgen. Tsutsusi, Sect. Brachycalyx
Synonyms: hidden
= Rhododendron nudipes var. lagopus (Nakai) T.Yamaz.; J. Jap. Bot. 59(7): 210 (1984)
= Rhododendron wadanum var. lagopus (Nakai) H.Hara; Enum. Spermatophytarum Japon. 1: 39 (1948)
variant :
var. niphophilum
(T.Yamaz.) T.Yamaz.; J. Jap. Bot. 63(12): 410 (1988)
Distribution: Japan (Honshu)
38 JAP
Synonyms: hidden
= Rhododendron lagopus f. albiflorum (Satomi & Fukush.) T.Yamaz.; Fl. Japan 3a: 35 (1993)
= Rhododendron lagopus f. niphophilum (T.Yamaz.) Minamit.; J. Jap. Bot. 94: 226 (2019)
= Rhododendron nudipes f. albiflorum Satomi & Fukush.; Sci. Stud. Hakusan Natl. Park 218 (1970)
= Rhododendron nudipes subsp. niphophilum T.Yamaz.; J. Jap. Bot. 56(11): 363 (1981)
species :
Rhododendron lagunculicarpum
J.J.Sm.; Bot. Jahrb. Syst. 68: 200 (1937)
Distribution: SW-Sulawesi
42 SUL
Remarks: Subgen. Rhododendron
species :
Rhododendron lambianum
Argent; Folia Malaysiana 4(2): 109 (2003)
Distribution: Borneo (Sabah, Sarawak)
42 BOR
species :
Rhododendron lamii
J.J.Sm.; Nova Guinea 18: 96 (1936)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron lampongum
Miq.; Fl. Ned. Ind., Eerste Bijv. 585 (1861)
Distribution: Sumatra
42 SUM
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Azalea lamponga (Miq.) Kuntze; Revis. Gen. Pl. 2: 386 (1891)
species :
Rhododendron lamrialianum
Argent & T.J.Barkman; New Plantsman 7(4): 208 (2000)
subspecies :
subsp. lamrialianum
Distribution: Borneo (Sabah)
42 BOR
subspecies :
subsp. gunsalamianum
Argent & T.J.Barkman; New Plantsman 7(4): 214 (2000)
Distribution: Borneo (Sabah)
42 BOR
species :
Rhododendron lanatoides
D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 39: 370, Map 115, 478 (1982)
Distribution: SE-Tibet
36 TIB
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Lanata
species :
Rhododendron lanatum
Hook.f.; Rhododendron Sikkim Himalaya t. 16 (1849)
Distribution: SE-Tibet; Nepal; Bhutan; N-India (Sikkim, Chumbi, Arunachal Pradesh)
36 TIB 40 BHU IND NEP
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Lanata
Synonyms: hidden
= Azalea lanata (Hook.f.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron flinckii Davidian; Quart. Bull. Amer. Rhododendron Soc. 25: 143 (1975)
species :
Rhododendron lanceolatum
Ridl.; J. Straits Branch Roy. Asiat. Soc. 63: 60 (1912)
Distribution: Borneo
42 BOR
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron partitum J.J.Sm.; Bull. Jard. Bot. Buitenz., Ser. 3, 13: 453 (1935)
species :
Rhododendron lanigerum
Tagg; Notes Roy. Bot. Gard. Edinburgh 16(79): 199-200 (1931)
Distribution: SE-Tibet; NE-India (Arunachal Pradesh)
36 TIB 40 IND
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Arborea
Synonyms: hidden
= Rhododendron lanigerum var. silvaticum (Cowan) Davidian; Rhododendron Species, 2 (Ser. Arboreum-Lacteum): 77 (1989)
= Rhododendron silvaticum Cowan; Notes Roy. Bot. Gard. Edinburgh 19(93): 185-186 (1936)
species :
Rhododendron laojunshanense
M.Y.Fang; J. Sichuan Univ., Nat. Sci. Ed. 1984(2): 111 (1984)
Distribution: China (SE-Yunnan)
36 CHI
Synonyms: hidden
= Rhododendron laojunense T.L.Ming; Acta Bot. Yunnan. 6(2): 150, f. 1 (1984)
species :
Rhododendron lapponicum
(L.) Wahlenb.; Fl. Lapp. 104 (1812)
Name: Lappland-Rose, Nordische Alpenrose, Lapland rosebay
Distribution: Norway; Sweden; Finland; Siberia (Yakutia); Russian Far East (Amur, Kamchatka, Khabarovsk, Magadan, Primorye, Sakhalin); China (Heilongjiang, Jilin, Liaoning, Nei Mongol); Mongolia; Ryukyu Isl.; Alaska; Greenland; Canada (Alberta, British Columbia, Labrador, Manitoba, Newfoundland, Nova Scotia, Northern Territories, Nunavut, Ontario, Québec, Yukon); USA (Connecticut, Maine, New Hampshire, New York, Wisconsin)
10 FIN NOR SWE 30 SIB 31 RFE 36 CHI 37 MON 38 NNS 70 ASK CDN GNL 71 CDN 72 CDN 74 USA 75 USA
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Lapponica
Synonyms: hidden
= Azalea ferruginosa Pall.; Fl. Ross. [Pallas] 2: t. 70 (1815)
= Azalea lapponica L.; Sp. Pl. [Linnaeus] 151 (1753)
= Azalea pallida Turcz.; Bull. Soc. Imp. Naturalistes Moscou 11: 96 (1838)
= Osmothamnus pallidus (Turcz.) DC.; Prodr. [A. P. de Candolle] 7: 715 (1839)
= Rhododendron confertissimum Nakai; Rep. Veg. Mt. Waigal-bon, N. Korea, 36 (1916) nomen
= Rhododendron lapponicum var. roseum Abrom.; Biblioth. Bot. 8(42, 2): 51 (1899)
= Rhododendron lapponicum var. viride Berlin; Öfvers. Kongl. Vetensk.-Akad. Förh. 41(7): 38 (1884)
= Rhododendron micranthum Maxim.; Mém. Acad. Imp. Sci. Saint Pétersbourg, Sér. 7, 16(9): 18 (1870), nom. illeg.
= Rhododendron pallidum (Turcz.) Dümmer; Gard. Chron., Ser. 3, 53: 264 (1913)
= Rhododendron parvifolium subsp. confertissimum (Nakai) A.P.Khokhr.; Sosud. Rast. Sovet. Dal´nego Vostoka 5: 133 (1991)
species :
Rhododendron lasiostylum
Hayata; Icon. Pl. Formosan. 3: 135-136 (1913)
Distribution: C-Taiwan
38 TAI
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
Synonyms: hidden
= Rhododendron sasakii E.H.Wilson; J. Arnold Arbor. 6(3): 181 (1925)
species :
Rhododendron lateriflorum
R.C.Fang & A.L.Zhang; Notes Roy. Bot. Gard. Edinburgh 41(1): 160 (1983)
Distribution: China (NW-Yunnan); SE-Tibet
36 CHI TIB
species :
Rhododendron latoucheae
Franch.; Bull. Soc. Bot. France 46: 210 (1899)
Distribution: China (Fujian, Guangdong, Guangxi, Guizhou, Hunan, Jiangxi, Sichuan, Zhejiang); Ryukyu Isl.
36 CHI 38 NNS
Remarks: Subgen. Azaleastrum, Sect. Choniastrum
Synonyms: hidden
= Azalea elliptica (Maxim.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron ellipticum Maxim.; Bull. Acad. Imp. Sci. Saint-Petersbourg 32(4): 497 (1888) (not Hoffmannsegg (1826)
= Rhododendron ellipticum var. leptosanthum (Hayata) S.S.Ying; Quart. J. Chin. Forest. 9(4): 122 (1976)
= Rhododendron ellipticum var. tanakae (Hayata) S.S.Ying; Coloured Ill. Fl. Taiwan 5: 122 (1995)
= Rhododendron latoucheae var. ionanthum (W.P.Fang) G.Z.Li; Guihaia 15(3): 205 (1995)
= Rhododendron leiopodum Hayata; Icon. Pl. Formosan. 3: 136-137, t. 24 (1913)
= Rhododendron leptanthum Hayata; Icon. Pl. Koisikav. 2: 93, t. 131 (1915) (not F. Muell. (1889)
= Rhododendron leptosanthum Hayata; Icon. Pl. Formosan. 3: 137-138 (1913)
= Rhododendron tanakae Hayata; Icon. Pl. Formosan. 4: 15 (1914)
= Rhododendron wilsoniae Hemsl. & E.H.Wilson; Bull. Misc. Inform. Kew 1910: 116 (1910)
= Rhododendron wilsoniae var. ionanthum W.P.Fang; Acta Phytotax. Sin. 21(4): 463-464, f. 8 (1983)
variant :
var. amamiense
Ohwi; Acta Phytotax. Geobot. 6: 49 (1937), pro syn.
Distribution: Ryukyu Isl.
38 NNS
Synonyms: hidden
= Rhododendron amamiense Ohwi; Acta Phytotax. Geobot. 6: 49 (1937)
species :
Rhododendron laudandum
Cowan; Notes Bot. Gard. Edinb. 19: 222 (1937)
Distribution: SE-Tibet; Bhutan
36 TIB 40 BHU
Remarks: Subgen. Rhododendron, Sect. Pogonanthum
variant :
var. temoense
Kingdon-Ward ex Cowan & Davidian; Rhodod. Yearbook 2: (1947)
Distribution: SE-Tibet
36 TIB
species :
Rhododendron leigongshanense
C.H.Yang, Z.G.Xie, Y.F.Yu & Z.R.Yang; Bangladesh J. Pl. Taxon. 22(2): 119 (2015)
Distribution: China (Guizhou)
36 CHI
species :
Rhododendron leishanicum
W.P.Fang & S.S.Chang ex D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 39(2): 261 (1982)
Distribution: China (E-Guangxi, NE-Guizhou)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Maculifera
Synonyms: hidden
= Rhododendron oligocarpum W.P.Fang; Acta Phytotax. Sin. 21(4): 466-467, pl. 1, f. 2 (1983) [fide Chen et al. 2024]
species :
Rhododendron lepidostylum
Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 12: 124 (1920)
Distribution: China (Yunnan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Trichoclada
species :
Rhododendron lepidotum
Wall.; Numer. List [Wallich] no. 758, ex Gen. Hist. 3: 845 (1834), descr.
Distribution: China (W-Sichuan, NW-Yunnan); SE-Tibet; Pakistan (Hazara); Nepal; Bhutan; India (Himachal Pradesh, Jammu & Kashmir); NE-Myanmar (Kachin)
36 CHI TIB 40 BHU IND NEP PAK 41 MYA
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Lepidota
Synonyms: hidden
= Azalea lepidota (Wall. ex G.Don) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron cremnastes Balf.f. & Farrer; Notes Roy. Bot. Gard. Edinburgh 13: 253 (1922)
= Rhododendron elaeagnoides Hook.f.; Rhod. Sikkim-Himal. 2. t. 23 B (1851)
= Rhododendron lepidotum subsp. obovatum (Hook.f.) Pradhan & Lachungpa; Sikkim-Himalayan Rhododendrons 45 (1990)
= Rhododendron lepidotum subsp. salignum (Hook.f.) Pradhan & Lachungpa; Sikkim-Himalayan Rhododendrons 45 (1990)
= Rhododendron lepidotum var. album Davidian; J. Amer. Rhododendron Soc. 36(1): 16 (1982)
= Rhododendron lepidotum var. minutiforme Davidian; J. Amer. Rhododendron Soc. 36(1): 17 (1982)
= Rhododendron obovatum Hook.f.; Rhod. Sikkim-Himal. Consp. 6 (1849)
= Rhododendron salignum Hook.f.; Rhod. Sikkim-Himal. Consp. 6. t. 23 (1849)
= Rhododendron sinolepidotum Balf.f.; Notes Roy. Bot. Gard. Edinburgh 10: 155 (1917)
species :
Rhododendron leptanthum
F.Muell.; Trans. Roy. Soc. Vict. N. S. 1(2): 24 (1889)
Distribution: New Guinea (Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
variant :
var. warianum
(Schltr.) Argent; Edinburgh J. Bot. 52(3): 365 (1995)
Distribution: New Guinea (Papua New Guinea)
42 NWG
Synonyms: hidden
= Rhododendron warianum Schltr.; Bot. Jahrb. Syst. 55: 151 (1918)
species :
Rhododendron leptobrachion
Sleumer; Reinwardtia 5: 203 (1960)
Distribution: C-Sulawesi
42 SUL
Remarks: Subgen. Rhododendron
species :
Rhododendron leptocarpum
Nutt.; Hooker´s J. Bot. Kew Gard. Misc. 6: 256 (1854)
Distribution: China (NW-Yunnan); S-Tibet; Bhutan; N-India (Arunachal Pradesh); NE-Myanmar
36 CHI TIB 40 BHU IND 41 MYA
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Boothia
Synonyms: hidden
= Azalea leptocarpa (Nutt.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron micromeres Tagg; Notes Bot. Gard. Edinb. 16: 211 (1931)
= Rhododendron pumilum Nutt.; Hooker´s J. Bot. Kew Gard. Misc. 5: 354 (1853), nom. illeg.
species :
Rhododendron leptomorphum
Sleumer; Reinwardtia 5: 160 (1960)
Distribution: EC-Sulawesi
42 SUL
Remarks: Subgen. Rhododendron
species :
Rhododendron leptopeplum
Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 11(52-53): 82-84 (1919)
Distribution: China (NW-Yunnan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Irrorata
species :
Rhododendron leptothrium
Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 11(52-53): 84-86 (1919)
Distribution: China (SW-Sichuan, W-Yunnan); SE-Tibet; Myanmar (Kachin)
36 CHI TIB 41 MYA
Remarks: Subgen. Azaleastrum, Sect. Azaleastrum
Synonyms: hidden
= Rhododendron australe Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 12(57-58): 93-95 (1920)
species :
Rhododendron leucaspis
Tagg; Gard. Chron., Ser. 3, 85: 308 (1929)
Distribution: S- & SE-Tibet
36 TIB
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Boothia
species :
Rhododendron leucogigas
Sleumer; Blumea 12: 102 (1963)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron levinei
Merr.; Philipp. J. Sci., Bot. 13: 153 (1918), et Metcalf in Lingnan Sci. J. 13: 522 (1934), descr. ampl.
Distribution: China (Fujian, Guangdong, Guangxi, Guizhou, Hunan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Maddenia
species :
Rhododendron leytense
Merr.; Philipp. J. Sci., Bot. 10: 55 (1915)
Distribution: Philippines (Leyte, Luzon, Camiguin)
42 PHI
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron flaviflorum Elmer ex Merr.; Enum. Philipp. Fl. Pl. 3: 244 (1923), pro syn.
variant :
var. loheri
(H.F.Copel.) Sleumer; Reinwardtia 5: 218 (1960)
Distribution: Philippines (Luzon)
42 PHI
Synonyms: hidden
= Rhododendron loheri H.F.Copel.; Philipp. J. Sci. 40: 137, 166 (1929)
species :
Rhododendron liangshanicum
Z.J.Zhao; J. Sichuan Univ., Nat. Sci. Ed. 41(6): 1298 (2004)
Distribution: China (Sichuan)
36 CHI
species :
Rhododendron liaoxigensis
S.L.Tung & Z.Lu; Bull. Bot. Res. North-East. Forest. Inst. 8(2): 155 (1988)
Distribution: China (W-Liaoning)
36 CHI
species :
Rhododendron liboense
Zheng R.Chen & K.M.Lan; Acta Phytotax. Sin. 41: 563 (2003)
Distribution: China (SE-Guizhou)
36 CHI
species :
Rhododendron lilacinum
Xiang Chen & X.Chen; Novon 20(4): 388 (2010)
Distribution: China (Guizhou)
36 CHI
species :
Rhododendron liliiflorum
H.Lév.; Repert. Spec. Nov. Regni Veg. 12: 102 (1913)
Distribution: China (Hunan, Guangxi, Guizhou, SE-Yunnan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Maddenia
species :
Rhododendron lindaueanum
Koord.; Nova Guinea 8: 878 (1912)
Distribution: New Guinea (Irian Jaya, Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron fuchsioides Schltr.; Bot. Jahrb. Syst. 55: 147 (1918)
= Rhododendron lindaueanum var. cyclopicum Sleumer; Reinwardtia 5: 59 (1960)
= Rhododendron lindaueanum var. latifolium J.J.Sm.; Nova Guinea 12: 130 (1914)
= Rhododendron lindaueanum var. psilacrum Sleumer; Reinwardtia 5: 58 (1960)
variant :
var. bantangense
J.J.Sm.; Repert. Spec. Nov. Regni Veg. 30: 163 (1932)
Distribution: SW-Sulawesi
42 SUL
species :
Rhododendron lindleyi
T.Moore; Gard. Chron. 364 (1864)
Distribution: Tibet; Nepal; Bhutan; N-India (Arunachal Pradesh, Sikkim, Darjeeling); Bangladesh; Myanmar (Kachin)
36 TIB 40 BAN BHU IND NEP 41 MYA
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Maddenia
Synonyms: hidden
= Rhododendron bhotanicum C.B.Clarke; Hook.f. Fl. Brit. India [J. D. Hooker] 3: 475 (1882)
= Rhododendron grothausii Davidian; Quart. Bull. Amer. Rhododendron Soc. 34(4): 211 (1980)
= Rhododendron lindleyanum Millais; Rhododendrons, 202 (1917)
species :
Rhododendron lineare
Merr.; J. Straits Branch Roy. Asiat. Soc. 76: 108 (1917)
Distribution: Borneo
42 BOR
Remarks: Subgen. Rhododendron
species :
Rhododendron linearilobum
R.C.Fang & A.L.Chang; Acta Bot. Yunnan. 4(3): 250 (1982)
Distribution: China (Yunnan)
36 CHI
species :
Rhododendron linguiense
G.Z.Li; Guihaia 15(4): 295-296, t. 2, f. 1-5 (1995)
Distribution: China (Guangxi)
36 CHI
species :
Rhododendron litchiifolium
T.C.Wu & P.C.Tam; Med. Mat. Guangdong 4: 35, f. 3 (1979)
Distribution: China (S-Guangdong)
36 CHI
species :
Rhododendron loboense
H.F.Copel.; Philipp. J. Sci. 40: 137, 172 (1929)
Distribution: Philippines (Luzon, Mindoro, Camiguin)
42 PHI
Remarks: Subgen. Rhododendron
species :
Rhododendron lochiae
F.Muell.; Vict. Naturalist 3: 157 (1887); in Gard. Chron. 1: 543 (1887); et in Bot. Centralbl. 30: 277 (1887)
Distribution: Australia (Queensland)
50 AUS
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Azalea lochiae (F.Muell.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron notiale Craven; Edinburgh J. Bot. 53: 33 (1996)
species :
Rhododendron loerzingii
J.J.Sm.; Meded. Dept. Landb. Ned.-Indië 18: 107 (1914)
Distribution: C-Java
42 JAW
Remarks: Subgen. Rhododendron
species :
Rhododendron lompohense
J.J.Sm.; Bull. Jard. Bot. Builena. Ser. 3, 1: 402 (1920)
Distribution: C-Sulawesi
42 SUL
Remarks: Subgen. Rhododendron
species :
Rhododendron longesquamatum
C.K.Schneid.; Ill. Handb. Laubholzk. 2: 483 (1909)
Distribution: China (W-Sichuan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Lanata
Synonyms: hidden
= Rhododendron brettii Hemsl. & E.H.Wilson; Bull. Misc. Inform. Kew 1910(4): 106 (1910)
= Rhododendron longesquamatum var. glabristylum Y.Y.Geng & Z.L.Zhao; Acta Phytotax. Sin. 41(2): 197 (2003)
species :
Rhododendron longicalyx
M.Y.Fang; Acta Phytotax. Sin. 26(1): 67-68, f. 2 (1988)
Distribution: China (W-Sichuan)
36 CHI
species :
Rhododendron longifalcatum
P.C.Tam; Guihaia 2(2): 73-74, f. 6 (1982)
Distribution: China (SW-Guangxi)
36 CHI
species :
Rhododendron longiflorum
Lindl.; J. Hort. Soc. 3: 88 (1848)
Distribution: peninsular Malaysia (Kedah, Pahang, Selangor); +Singapore; Sumatra (incl. Mentawai); Borneo (incl. Karimata Isl.)
42 BOR MLY SNG SUM
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron javanicum var. tubiflorum Hook.; (1885)
= Rhododendron lobbii H.J.Veitch; Nursery Cat. (Veitch) 1870: 16, 22 (1870)
= Rhododendron orion var. aurantiacum Ridl.; (1923)
= Rhododendron tubiflorum H.Low ex Lindl.; J. Hort. Soc. London 3: 88 (1848), nom. illeg.
variant :
var. bancanum
Sleumer; Reinwardtia 5: 210 (1960)
Distribution: Sumatra (Bangka Isl.)
42 SUM
variant :
var. longipetalum
Argent, A.Lamb & Phillipps; Notes Roy. Bot. Gard. Edinburgh 42(1): 114 (1984)
Distribution: Borneo (Sabah)
42 BOR
variant :
var. subcordatum
(Becc.) Argent; Bot. J. Linn. Soc. 85(1): 14 (1982)
Distribution: peninsular Thailand; Borneo
41 THA 42 BOR
Synonyms: hidden
= Rhododendron subcordatum Becc.; Malesia 1: 1203 (1878)
species :
Rhododendron longilobum
L.M.Gao & D.Z.Li; Novon 13: 192 (2003)
Distribution: China (SE-Yunnan)
36 CHI
species :
Rhododendron longipedicellatum
Lei Cai & Y.P.Ma; Phytotaxa 282(4): 296 (2016)
Distribution: China (Yunnan)
36 CHI
species :
Rhododendron longiperulatum
Hayata; Icon. Pl. Formosan. 3: 138-139 (1913)
Distribution: Taiwan
38 TAI
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
species :
Rhododendron longipes
Rehder & E.H.Wilson; Pl. Wilson. [Sargent] 1(3): 528 (1913)
Distribution: China (E-Guizhou, SW-Sichuan, NE-Yunnan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Argyrophylla
variant :
var. chienianum
(D.Fang) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 37(2): 329 (1979)
Distribution: China (Chongqing, ?NE-Yunnan)
36 CHI
Synonyms: hidden
= Rhododendron chienianum D.Fang; Contr. Biol. Lab. Chin. Assoc. Advancem. Sci., Sect. Bot. 12: 28 (1939)
species :
Rhododendron longistylum
Rehder & E.H.Wilson; Sarg., Pl. Wilson. [Sargent] 1: 514 (1913)
subspecies :
subsp. longistylum
Distribution: China (C-Sichuan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Tephropepla
subspecies :
subsp. decumbens
R.C.Fang; Acta Bot. Yunnan. 4(3): 249 (1982)
Distribution: China (NE-Yunnan)
36 CHI
species :
Rhododendron loniceriflorum
P.C.Tam; Bull. Bot. Res., Harbin 2(4): 81-82, photo. 3 (1982)
Distribution: China (S-Fujian)
36 CHI
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
species :
Rhododendron loranthiflorum
Sleumer; Notizbl. Bot. Gart. Berlin-Dahlem 12: 485 (1935)
subspecies :
subsp. loranthiflorum
Distribution: Bismarck Arch. (New Britain); Solomon Isl. (Bougainville)
43 BIS SOL
Remarks: Subgen. Rhododendron
subspecies :
subsp. lakekamuense
W.N.Takeuchi; Edinburgh J Bot. 57(3): 333 (2000)
Distribution: New Guinea (Papua New Guinea)
42 NWG
species :
Rhododendron lowii
Hook.f.; Hooker´s Icon. Pl., t. 883 (1852)
Distribution: Borneo
42 BOR
Remarks: Subgen. Rhododendron
species :
Rhododendron lowndesii
Davidian; Notes Bot. Gard. Edinb. 21: 99 (1952)
Distribution: Nepal
40 NEP
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Lepidota
species :
Rhododendron luciferum
(Cowan) Cowan; Notes Roy. Bot. Gard. Edinburgh 21(3): 145-146 (1953)
Distribution:
Synonyms: hidden
= Rhododendron lanatum var. luciferum Cowan; Notes Roy. Bot. Gard. Edinburgh 19(94): 228-229 (1937)
species :
Rhododendron ludlowii
Cowan; Notes Bot. Gard. Edinb. 19: 243 (1937)
Distribution: SE-Tibet; S-Tibet; NE-India (Arunachal Pradesh)
36 TIB 40 IND
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Uniflora
species :
Rhododendron luhuoense
H.P.Yang; Acta Bot. Yunnan. 10(3): 368 (1988)
Distribution: China (NW-Sichuan)
36 CHI
species :
Rhododendron lukiangense
Franch.; J. Bot. [Morot] 12(15-16): 257-258 (1898)
Distribution: China (SW-Sichuan, NW-Yunnan); SE-Tibet
36 CHI TIB
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Irrorata
Synonyms: hidden
= Rhododendron admirabile Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 27-28 (1920)
= Rhododendron adroserum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 28-29 (1920)
= Rhododendron ceraceum Balf.f. & W.W.Sm.; Trans. Bot. Soc. Edinburgh 27(2): 187-190 (1917)
= Rhododendron gymnanthum Diels; Notes Roy. Bot. Gard. Edinburgh 5(25): 211 (1912)
= Rhododendron lukiangense subsp. admirabile (Balf.f. & Forrest) Tagg; Spec. Rhododendron 351 (1930)
= Rhododendron lukiangense subsp. adroserum (Balf.f. & Forrest) Tagg; Spec. Rhododendron 351 (1930)
= Rhododendron lukiangense subsp. ceraceum (Balf.f. & W.W.Sm.) Tagg; Spec. Rhododendron 351 (1930)
= Rhododendron lukiangense subsp. gymnanthum (Diels) Tagg; Spec. Rhododendron 351 (1930)
species :
Rhododendron lulangense
L.C.Hu & Tateishi; Acta Phytotax. Sin. 30(6): 545-547, f. 4 (1992)
Distribution: S-Tibet
36 TIB
species :
Rhododendron lungchiense
W.P.Fang; Acta Sci. Nat. Univ. Szechuan. 1957(2): 218 (1957)
Distribution: China (NC-Sichuan)
36 CHI
species :
Rhododendron luraluense
Sleumer; Notizbl. Bot. Gart. Berlin-Dahlem 12: 485 (1935)
subspecies :
subsp. luraluense
Distribution: Bougainville
43 SOL
Remarks: Subgen. Rhododendron
subspecies :
subsp. whitmorei
Argent; Rhododendrons subgen. Vireya 313 (2006)
Distribution: Solomon Isl.
43 SOL
species :
Rhododendron luteiflorum
Davidian; Quart. Bull. Amer. Rhododendron Soc. 32(2): 82 (1978)
Distribution: Myanmar
41 MYA
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Glauca
Synonyms: hidden
= Rhododendron luteiflorum (Davidian) Cullen; Notes Roy. Bot. Gard. Edinburgh 36(1): 114 (1978)
species :
Rhododendron lutescens
Franch.; Bull. Soc. Bot. Fr. 33: 235 (1886); et in Nouv. Arch. Mus. Paris, Ser. 2, 10: 235 (1887 publ. 1888)
Distribution: China (W-Sichuan, SW-Sichuan, Guizhou, Yunnan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Triflora
Synonyms: hidden
= Rhododendron blinii H.Lév.; Bull. Acad. Int. Géogr. Bot. 25: 21 (1915)
= Rhododendron costulatum Franch.; J. Bot. [Morot] 9: 399 (1895)
= Rhododendron lemeei H.Lév.; Repert. Spec. Nov. Regni Veg. 13: 339 (1914)
= Rhododendron lutescens f. shimianense (W.P.Fang & P.S.Liu) Y.Y.Geng; Acta Phytotax. Sin. 42(6): 569 (2004)
= Rhododendron shimianense W.P.Fang & P.S.Liu; Bull. Bot. Res. North-East. Forest. Inst. 2(4): 3 (1982)
species :
Rhododendron luteum
Sweet; Hort. Brit. od. 2, 343 (1830)
Name: Pontische Azalee (DE)
Distribution: England [I]; Germany [I]; Austria; Poland; Slovakia; Slovenia; Belarus; C-European Russia; Ukraine; Northern Caucasus; Georgia [Caucasus]; Armenia; Azerbaijan; East Aegaean Isl. (Lesvos); Turkey (N-Anatolia, NE-Anatolia, WN-Anatolia)
10 grb 11 AUT ger POL SLO 13 SLV 14 BLR RUS UKR 33 ARM AZE GEO NCS 34 EAI TUR
Remarks: Subgen. Pentanthera, Sect. Pentanthera
Synonyms: hidden
= Anthodendron flavum (Hoffmanns.) Rchb.; Mössler, Handb. Gewächsk. ed. 2, 1: 309 (1827)
= Azalea flava Hoffmanns.; Verz. Pfl.-Kult., Nachtr. 2: 62 (1828)
= Azalea pontica var. flava (Hoffmanns.) DC.; Prodr. [A. P. de Candolle] 7: 718 (1839)
= Rhododendron flavum (Hoffmanns.) G.Don; Gen. Hist. 3: 847 (1834), nom. illeg.
= Rhododendron flavum f. macranthum (Bean) Rehder; Bibliogr. Cult. Trees 520 (1949)
= Rhododendron flavum var. coronarium Sweet; Brit. Fl. Gard., Ser. 2, 4: t. 331 (1836)
= Rhododendron flavum var. macranthum Bean; Trees & Shrubs Brit. Isles 2: 357 (1914)
= Rhododendron indicum var. luteum (Sweet) G.Don; Gen. Hist. 3: 846 (1834)
= Rhododendron luteum var. macranthum (Bean) E.H.Wilson; Wils. & Rehd., Monogr. Azaleas 105 (1921)
species :
Rhododendron macabeanum
G.Watt ex Balf.f.; Notes Bot. Gard Edin. 12: 128 (1920)
Distribution: NE-India (Nagaland)
40 IND
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Grandia
species :
Rhododendron macgregoriae
F.Muell.; J. Bot., Lond. 29: 177 (1891)
Distribution: New Guinea (Irian Jaya, Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron calceolarioides Wernham; Trans. Linn. Soc. London, Bot. 9: 95 (1916)
= Rhododendron gorumense Schltr.; Bot. Jahrb. Syst. 55: 142 (1917)
= Rhododendron hansemannii Warb.; Bot. Jahrb. Syst. 16: 26 (1892)
= Rhododendron lauterbachianum F.Först.; Repert. Spec. Nov. Regni Veg. 13: 224 (1914)
= Rhododendron vonroemeri Koord.; Nova Guinea 8: 879 (1912)
species :
Rhododendron mackenzianum
Forrest; Notes Roy. Bot. Gard. Edinburgh 12: 132 (1920)
Distribution: China (W-Yunnan); SE-Tibet; NE-Myanmar (Kachin)
36 CHI TIB 41 MYA
species :
Rhododendron macrophyllum
D.Don ex G.Don; Gen. Hist. 3: 843 (1834)
Name: Pacific rhododendron
Distribution: Canada (British Columbia); USA (California, Oregon, Washington State)
71 CDN 73 USA 76 USA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Pontica
Synonyms: hidden
= Azalea californica (Hook.f.) Kuntze; Revis. Gen. Pl. 2: 387 (1891), nom. illeg.
= Azalea macrophylla (D.Don ex G.Don) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Hymenanthes californica (Hook.) H.F.Copel.; Amer. Midl. Naturalist 30: 614 (1943)
= Hymenanthes macrophylla (D.Don ex G.Don) H.F.Copel.; Leafl. W. Bot. 5: 140 (1948)
= Hymenanthes macrophylla f. alba (Rehder) Benth.; Leafl. W. Bot. 5: 140 (1948)
= Rhododendron californicum Hook.; Bot. Mag. 81: t. 4863 (1855)
= Rhododendron californicum var. washingtonianum Zabel ex Rehder; Cycl. Amer. Hort. [L.H.Bailey] 4: 1522 (1902)
= Rhododendron macrophyllum f. album Rehder; J. Arnold Arbor. 28: 254 (1947)
= Rhododendron washingtonianum Millais; Rhododendrons, 260 (1917)
species :
Rhododendron macrosiphon
Sleumer; Blumea 11: 118 (1961)
Distribution: New Guinea (Irian Jaya, Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron maculiferum
Franch.; J. Bot. [Morot] 9: 393 (1895)
Distribution: China (SW-Shaanxi, S-Gansu, W-Hubei, N-Sichuan, NE-Guizhou, SE-Guizhou)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Maculifera
species :
Rhododendron maddenii
Hook.f.; Rhod. Sikkim-Himal. t. 18 (1849)
Distribution: S-Tibet; Bhutan; N-India (Sikkim, Darjeeling, Arunachal Pradesh); Myanmar (Chin, Kachin)
36 TIB 40 BHU IND 41 MYA
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Maddenia
Synonyms: hidden
= Azalea maddenii (Hook.f.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron brachysiphon Balf.f.; Notes Roy. Bot. Gard. Edinburgh 12: 24 (1919)
= Rhododendron brevitubum Balf.f. & R.E.Cooper; Notes Roy. Bot. Gard. Edinburgh 10: 88 (1917) (non J. J. Sm. 1914)
= Rhododendron calophyllum Nutt.; Hooker´s J. Bot. Kew Gard. Misc. 5: 362 (1853)
= Rhododendron calophyllum var. longifolium Regel; Index Sem. (St. Petersburg [Petropolitanus]) 1866: 96 (1867)
= Rhododendron calophyllum var. roseum Regel; Index Sem. (St. Petersburg [Petropolitanus]) 1866: 96 (1867)
= Rhododendron jenkinsii Nutt.; Hooker´s J. Bot. Kew Gard. Misc. 5: 361 (1853)
= Rhododendron macranthum Griff.; Itin. Notes (Posth. Papers, 2), 144, No. 690 (1848) (not (Bunge) D. Don (1834)
= Rhododendron maddenii var. calophyllum (Nutt.) C.B.Clarke; Hook.f., Fl. Brit. India [J. D. Hooker] 3: 473 (1882)
= Rhododendron polyandrum Hutch.; Notes Roy. Bot. Gard. Edinburgh 12: 25 (1919)
species :
Rhododendron madulidii
Argent; New Plantsman 5(4): 204 (1998)
Distribution: Palawan
42 PLW
species :
Rhododendron magnificum
Kingdon-Ward; J. Bot. 73(9): 247 (1935)
Distribution: SE-Tibet; NE-Myanmar (Kachin)
36 TIB 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Grandia
species :
Rhododendron magniflorum
W.K.Hu; Bull. Bot. Res., Harbin 8(3): 51-52, f. 2 (1988)
Distribution: China (SW-Guizhou)
36 CHI
species :
Rhododendron mainlingense
S.H.Huang & R.C.Fang; Fl. Xizang. 3: 674 (1986)
Distribution: SE-Tibet
36 TIB
species :
Rhododendron maius
(J.J.Sm.) Sleumer; Reinwardtia 5: 120 (1960)
Distribution: New Guinea (Irian Jaya, Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron carringtoniae var. maius J.J.Sm.; Nova Guinea 12: 511 (1917)
species :
Rhododendron makinoi
Tagg ex Nakai; Nakai & Koidz. Trees & Shrubs Japan Proper, ed. 2, 61 (1927), japonice; Tagg in Spec. Rhododendron, 577 (1930), et Notes Bot. Gard. Edinb. 16: 201 (1931), cum descr. latin.
Distribution: Japan (Honshu)
38 JAP
Synonyms: hidden
= Azalea makinoi (Tagg ex Nakai) Makino; J. Jap. Bot. 6: 3 (1929)
= Azalea makinoi var. muranoana Makino; J. Jap. Bot. 6: 4 (1929)
= Rhododendron hymenanthes f. angustifolium Makino; Bot. Mag. (Tokyo) 16: 33 (1902)
= Rhododendron makinoi f. leucanthum (Makino) Sugim.; New Keys Jap. Trees 470 (1961)
= Rhododendron makinoi f. muraoanum (Makino) H.Hara; Enum. Spermatophytarum Japon. 1: 41 (1948)
= Rhododendron makinoi f. plenum Sugim.; New Keys Woody Pl. Jap. 380 (1972)
= Rhododendron metternichii var. angustifolium (Makino) Bean; Trees & Shrubs Brit. Isles 2: 368 (1914)
= Rhododendron stenophyllum Makino; Bot. Mag. (Tokyo) 24: 99 (1910), non Hook.f. ex Becc.
= Rhododendron yakushimanum subsp. makinoi (Tagg ex Nakai) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 37: 336 (1979)
species :
Rhododendron malayanum
Jack; Malayan Misc. 2: n. VII. 17 (1822)
Distribution: S-Thailand; peninsular Malaysia (Kelantan, Perak, Pahang, Selangor, Johor); Sumatra; Borneo; Sulawesi; Java
41 THA 42 BOR JAW MLY SUL SUM
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Azalea malayana (Jack) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Azalea tubiflora Blume ex DC.; Prod. 7: 725 (1839)
= Rhododendron malayanum f. latifolium Sleumer; Reinwardtia 5: 103 (1960)
= Rhododendron malayanum var. axillare J.J.Sm.; Icon. Bogor. 4: 74 (1919)
= Rhododendron tubiflorum (Blume) DC.; Prodr. [A. P. de Candolle] 7: 725 (1839)
= Vireya tubiflora Blume; Bijdr. Fl. Ned. Ind. 15: 855 (1826)
variant :
var. pilosifilum
Sleumer; Reinwardtia 5: 102 (1960)
Distribution: Moluccas (Seram, Buru)
42 MOL
variant :
var. pubens
Sleumer; Reinwardtia 5: 102 (1960)
Distribution: Moluccas (Seram)
42 MOL
species :
Rhododendron malipoense
M.Y.He; J. Sichuan Univ., Nat. Sci. Ed. 1984: 95, photo. 4 (1984)
Distribution: China (Yunnan)
36 CHI
species :
Rhododendron mallotum
Balf.f. & Kingdon-Ward; Notes Roy. Bot. Gard. Edinburgh 10: 118 (1917)
Distribution: China (W-Yunnan); NE-Myanmar (Kachin)
36 CHI 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Neriiflora
Synonyms: hidden
= Rhododendron aemulorum Balf.f.; Notes Roy. Bot. Gard. Edinburgh 12(57-58): 86-88 (1920)
species :
Rhododendron maoerense
D.Fang & Q.Z.Li; Bull. Bot. Res., Harbin 4(1): 1-2, photo. 1-2 (1984)
Distribution: China (NE-Guangxi)
36 CHI
species :
Rhododendron maowenense
Ching & H.P.Yang; Bull. Bot. Res. North-East. Forest. Inst. 3(2): 96 (1983)
Distribution: China (N-Sichuan)
36 CHI
species :
Rhododendron mariae
Hance; J. Bot. 20(236): 230-231 (1882)
Distribution: China (Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hunan, Jiangxi)
36 CHI
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
Synonyms: hidden
= Azalea mariae (Hance) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron bicorniculatum P.C.Tam; Survey Genus Rhododendron S. China 53, 104, f. 5 (1983)
= Rhododendron gratiosum P.C.Tam; Guihaia 3(3): 178-179, photo 2 (1983)
= Rhododendron papyrociliare P.C.Tam; Bull. Bot. Res., Harbin 3(3): 179 (1983)
species :
Rhododendron mariesii
Hemsl. & E.H.Wilson; Bull. Misc. Inform. Kew 1907(6): 244-246 (1907)
Distribution: China (Anhui, Fujian, Guangdong, Guangxi, Guizhou, Henan, Hebei, Hubei, Hunan, Jiangsu, Jiangxi, Shanxi, Sichuan, Zhejiang); Taiwan
36 CHI 38 TAI
Remarks: Subgen. Tsutsusi, Sect. Brachycalyx
Synonyms: hidden
= Azalea mariesii (Hemsl. & E.H.Wilson) H.F.Copel.; Amer. Midl. Naturalist 30: 597 (1943)
= Rhododendron daiyuenshanicum P.C.Tam; Surv. Genus Rhododendron S. China 96, 28 (1983) nom. illeg. superfl.
= Rhododendron daiyunicum P.C.Tam; Bull. Bot. Res., Harbin 2(4): 78-79 (1982)
= Rhododendron farrerae var. mediocre Diels; Bot. Jahrb. Syst. 29(3-4): 514 (1900)
= Rhododendron farrerae var. weyrichii Diels; Bot. Jahrb. Syst. 29(3-4): 513 (1900)
= Rhododendron gnaphalocarpum Hayata; Icon. Pl. Formosan. 3: 132-133 (1913)
= Rhododendron shojoensis Hayata; J. Coll. Sci. Imp. Univ. Tokyo 30(1): 174-175 (1911)
= Rhododendron umbelliferum H.Lév.; Repert. Spec. Nov. Regni Veg. 12: 102 (1913)
species :
Rhododendron martinianum
Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 11(52-53): 96-99 (1919)
Distribution: China (NW-Yunnan); E-Tibet; Myanmar (Kachin)
36 CHI TIB 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Selensia
species :
Rhododendron maximum
L.; Sp. Pl. [Linnaeus] 392 (1753)
Name: Great laurel
Distribution: Canada (Nova Scotia); USA (Alabama, Connecticut, District of Columbia, Delaware, Georgia, Kentucky, Massachusetts, Maryland, Maine, North Carolina, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, South Carolina, Tennessee, Virginia, Vermont, West Virginia)
72 CDN 75 USA 78 USA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Pontica
Synonyms: hidden
= Hymenanthes maxima (L.) H.F.Copel.; Amer. Midl. Naturalist 30: 614 (1943)
= Rhododendron album (Pursh) Hoffmanns.; Verz. Pfl.-Kult. 192 (1824), nom. illeg.
= Rhododendron ashleyi Coker; J. Elisha Mitchell Sci. Soc. 51: 189 (1935)
= Rhododendron latifolium Hoffmanns.; Verz. Pfl.-Kult., Nachtr. 2: 195 (1828)
= Rhododendron maximum f. album (Pursh) Fernald; Rhodora 43: 336 (1941)
= Rhododendron maximum f. apetalum V.V.Byalt & Firsov; Hortus Botanicus 11: 27 (2015)
= Rhododendron maximum f. purpureum (Pursh) Fernald; Rhodora 43: 336 (1941)
= Rhododendron maximum f. viridimaculatum Peck; Rep. (Annual) Regents Univ. State New York New York State Mus. 47: 157 (1894)
= Rhododendron maximum var. album Pursh; Fl. Amer. Sept. 1: 297 (1813)
= Rhododendron maximum var. leachii B.E.Harkn. ex D.H.Voss; J. Amer. Rhododendron Soc. 55(3): 158 (2001)
= Rhododendron maximum var. purpureum Pursh; Fl. Amer. Sept. 1: 297 (1813)
= Rhododendron maximum var. roseum Pursh; Fl. Amer. Sept. 1: 297 (1813)
= Rhododendron procerum Salisb.; Prodr. Stirp. Chap. Allerton 287 (1796), nom. superfl.
= Rhododendron purpureum (Pursh) Buch.-Ham. ex D.Don; Prodr. Fl. Nepal. 154 (1825)
= Rhododendron purshii G.Don; Prod. Fl. Nep. 154 (1825)
= Rhododendron tigrinum Steud.; Nomencl. Bot. [Steudel], ed. 2, 2: 451 (1841), nom. inval.
species :
Rhododendron maxwellii
Gibbs; J. L. Soc, Bot. 42: 103 (1914)
Distribution: NE-Borneo
42 BOR
Remarks: Subgen. Rhododendron
species :
Rhododendron mayebarae
Nakai & H.Hara; J. Jap. Bot. 11: 825 (1935)
Distribution: Japan (Kyushu)
38 JAP
Remarks: Subgen. Tsutsusi, Sect. Brachycalyx
Synonyms: hidden
= Rhododendron dilatatum f. leucanthum Hatus.; Sci. Rep. Yokosuka City Mus. 15: 21 (1969)
= Rhododendron kiyosumense subsp. mayebarae (Nakai & H.Hara) Makino
= Rhododendron mayebarae f. leucanthum (Hatus.) T.Yamaz.; Fl. Japan 3a: 38 (1993)
= Rhododendron nudipes var. mayebarae (Nakai & H.Hara) Kitam.; Acta Phytotax. Geobot. 25: 37 (1972)
= Rhododendron viscistylum var. mayebarae (Nakai & H.Hara) Sugim.; New Keys Woody Pl. Jap. 509 (1972)
variant :
var. ohsumiense
T.Yamaz.; J. Jap. Bot. 59(7): 209 (1984)
Distribution: Japan (Kyushu)
38 JAP
species :
Rhododendron meagae
Mambrasar & Hutabarat; Reinwardtia 17(2): 97 (2018)
Distribution: New Guinea (Irian Jaya)
42 NWG
species :
Rhododendron mechukae
A.A.Mao & A.Paul; Edinburgh J. Bot. 70(1): 58 (2013)
Distribution: NE-India (Arunachal Pradesh)
40 IND
species :
Rhododendron meddianum
Forrest; Notes Roy. Bot. Gard. Edinburgh 12: 136 (1920)
Distribution: China (W-Yunnan); NE-Myanmar (Kachin)
36 CHI 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Thomsonia
variant :
var. atrokermesinum
Tagg; Spec. Rhododendron 742 (1930)
Distribution: China (W-Yunnan); NE-Myanmar
36 CHI 41 MYA
species :
Rhododendron medoense
W.P.Fang & M.Y.He; Bull. Bot. Res., Harbin 3(1): 1-2, photo. 1 (1983)
Distribution: SE-Tibet
36 TIB
variant :
var. adenostylum
W.P.Fang & M.Y.He; Bull. Bot. Res. North-East. Forest. Inst. 3(1): 2 (1983)
Distribution: Myanmar (Kachin)
41 MYA
species :
Rhododendron megacalyx
Balf.f. & Kingdon-Ward; Notes Roy. Bot. Gard. Edinburgh 9: 246 (1916)
Distribution: China (NW-Yunnan); SE-Tibet; NE-India (Arunachal Pradesh); Myanmar (Kachin)
36 CHI TIB 40 IND 41 MYA
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Maddenia
species :
Rhododendron megalanthum
M.Y.Fang; Acta Phytotax. Sin. 26(1): 66-67, f. 1 (1988)
Distribution: SE-Tibet
36 TIB
species :
Rhododendron megeratum
Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 12: 140 (1920)
Distribution: China (NW-Yunnan); SE-Tibet; NE-India (Arunachal Pradesh); NE-Myanmar (Kachin)
36 CHI TIB 40 IND 41 MYA
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Boothia
Synonyms: hidden
= Rhododendron tapeinum Balf.f. & Farrer; Notes Roy. Bot. Gard. Edinburgh 12: 164 (1920)
= Rhododendron nayarii G.D.Pal; J. Bombay Nat. Hist. Soc. 98(2): 258 (2001)
species :
Rhododendron meijeri
Argent, A.Lamb & Phillipps; Notes Roy. Bot. Gard. Edinburgh 42(1): 116 (1984)
Distribution: Borneo (Sabah)
42 BOR
species :
Rhododendron mekongense
Franch.; J. Bot. [Morot] 3(5): 263 (1898)
Distribution: China (NW-Yunnan); SE-Tibet; Nepal; NE-India (Arunachal Pradesh); NE-Myanmar
36 CHI TIB 40 IND NEP 41 MYA
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Trichoclada
Synonyms: hidden
= Rhododendron rubroluteum Davidian; Quart. Bull. Amer. Rhododendron Soc. 29(3): 144 (1975)
= Rhododendron trichocladum subsp. nepalense H.Hara; J. Jap. Bot. 52: 197 (1977)
variant :
var. longipilosum
(Cowan) Cullen; Notes Roy. Bot. Gard. Edinburgh 36(1): 115 (1978)
Distribution: China (NW-Yunnan); SE-Tibet; NE-Myanmar
36 CHI TIB 41 MYA
Synonyms: hidden
= Rhododendron trichocladum var. longipilosum Cowan; Notes Roy. Bot. Gard. Edinburgh 19: 186 (1936)
variant :
var. melinanthum
(Balf.f. & Kingdon-Ward) Cullen; Notes Roy. Bot. Gard. Edinburgh 36(1): 115 (1978)
Distribution: China (NW-Yunnan); SE-Tibet; NE-Myanmar
36 CHI TIB 41 MYA
Synonyms: hidden
= Rhododendron chloranthum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 12: 98 (1920)
= Rhododendron melinanthum Balf.f. & Kingdon-Ward; Trans. Bot. Soc. Edin. 27: 85 (1916)
= Rhododendron semilunatum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13: 292 (1922)
variant :
var. rubrolineatum
(Balf.f. & Forrest) Cullen; Notes Roy. Bot. Gard. Edinburgh 36(1): 115 (1978)
Distribution: China (NW-Yunnan); SE-Tibet; NE-India (Arunachal Pradesh)
36 CHI TIB 40 IND
Synonyms: hidden
= Rhododendron rubrolineatum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 12: 160 (1920)
species :
Rhododendron melantherum
Schltr.; Bot. Jahrb. Syst. 55: 152 (1918)
Distribution: New Guinea
42 NWG
species :
Rhododendron meliphagidum
J.J.Sm.; Repert. Spec. Nov. Regni Veg. 30: 162 (1932)
Distribution: Moluccas (Seram, Buru Isl.)
42 MOL
Remarks: Subgen. Rhododendron
species :
Rhododendron mendumiae
Argent; Gard. Bull. Singapore 56(1-2): 82 (2004)
Distribution: Palawan
42 PLW
species :
Rhododendron mengtszense
Balf.f. & Sm.; Trans. Bot. Soc. Edinburgh 27: 206 (1917)
Distribution: China (SE-Yunnan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Irrorata
species :
Rhododendron menziesii
Craven; Blumea 56(1): 34 (2011), nom. nov.
Name: Rusty menziesia
Distribution: Alaska; Canada (Alberta, British Columbia); USA (California, Idaho, Montana, Oregon, Washington State, Wyoming)
70 ASK 71 CDN 73 USA 76 USA
Synonyms: hidden
= Menziesia ferruginea Sm.; Pl. Ic. Ined. t. 56 (1791)
= Menziesia ferruginea subsp. glabella (A.Gray) Calder & Roy L.Taylor; Canad. J. Bot. 43: 1398 (1965)
= Menziesia ferruginea var. glabella (A.Gray) M.Peck; Man. Pl. Oregon 542 (1941)
= Menziesia glabella A.Gray; Syn. Fl. N. Amer. 2(1): 39 (1878)
= Menziesia globularis Hook.; Fl. Bor.-Amer. 2: 41 (1834), nom. illeg.
= Menziesia urceolaris Salisb.; Parad. Lond. 1(2): ad t. 44 (1806), nom. illeg. nom. superfl.
= Rhododendron menziesii subsp. glabellum (A.Gray) Craven; Blumea 56: 34 (2011)
species :
Rhododendron meridionale
P.C.Tam; Guihaia 2(2): 71-72, f. 4 (1982), et Survey Rhododendron South China 49 & 103 (1983)
Distribution: China (Guangxi)
36 CHI
Synonyms: hidden
= Rhododendron chrysocalyx subsp. meridionale (P.C.Tam) X.F.Jin & B.Y.Ding; Nordic J. Bot. 27(3): 199 (2009)
= Rhododendron meridionale var. minus P.C.Tam; Survey Genus Rhododendron S. China 103 (1983)
= Rhododendron meridionale var. setistylum P.C.Tam; Guihaia 2(2): 72 (1982), et Survey Rhododendron South China 50 & 103 (1983)
species :
Rhododendron mianningense
Z.J.Zhao; Bull. Bot. Res. North-East. Forest. Inst. 7(3): 59 (1987)
Distribution: China (Sichuan)
36 CHI
species :
Rhododendron micranthum
Turcz.; Bull. Soc. Imp. Naturalistes Moscou 21(1): 586 (1848)
Distribution: N-China (south to Henan, Hubei, Hunan, Sichuan); North Korea; South Korea
36 CHI 38 KOR NKO
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Micrantha
Synonyms: hidden
= Azalea micrantha (Turcz.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron pritzelianum Diels; Bot. Jahrb. Syst. 29(3-4): 510 (1900)
= Rhododendron rosthornii Diels; Bot. Jahrb. Syst. 29(3-4): 509 (1900)
species :
Rhododendron microcarpum
R.L.Liu & L.M.Gao; Phytotaxa 356(4): 271 (2018)
Distribution: China (Jiangxi)
36 CHI
species :
Rhododendron microgynum
Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 11(52-53): 99-101 (1919)
Distribution: China (NW-Yunnan); SE-Tibet
36 CHI TIB
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Neriiflora
Synonyms: hidden
= Rhododendron gymnocarpum Balf.f. ex Tagg; Notes Roy. Bot. Gard. Edinburgh 15: 313 (1927)
= Rhododendron perulatum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 11(52-53): 106-108 (1919)
species :
Rhododendron micromalayanum
Sleumer; Blumea 21(2): 364 (1973)
Distribution: Borneo (Sarawak)
42 BOR
species :
Rhododendron microphyton
Franch.; Bull. Soc. Bot. France 33: 235 (1886)
Distribution: China (N-Guangxi, W-Guizhou, SW-Guizhou, SW-Sichuan, Yunnan); Myanmar (Kachin); N-Thailand
36 CHI 41 MYA THA
Synonyms: hidden
= Azalea microphyton (Franch.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron mariae subsp. microphyton (Franch.) X.F.Jin & B.Y.Ding; Nordic J. Bot. 27(3): 195 (2009)
= Rhododendron microphyton var. trichanthum A.L.Chang ex R.C.Fang; Acta Bot. Yunnan. 4(3): 249 (1982)
species :
Rhododendron milleri
Argent; Rhododendrons subgen. Vireya 304 (2006)
Distribution: New Guinea (Irian Jaya)
42 NWG
species :
Rhododendron mimetes
Tagg & Forrest; Notes Roy. Bot. Gard. Edinburgh 15(75): 315-316 (1927)
Distribution: China (SW-Sichuan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Taliensia
species :
Rhododendron mindanaense
Merr.; Philipp. Gov. Lab. Bur. Bull. 29: 41 (1905)
Distribution: Philippines (Mindanao)
42 PHI
Remarks: Subgen. Rhododendron
species :
Rhododendron mingii
Y.P.Ma, L.M.Gao & E.D.Liu; Phytotaxa 619(1): 98 (2023)
Distribution: China (Yunnan)
36 CHI
species :
Rhododendron miniatum
Cowan; Notes Roy. Bot. Gard. Edinburgh 19(94): 229-230 (1937)
Distribution: S-Tibet
36 TIB
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Fulgensia
species :
Rhododendron minimifolium
Wernham; Trans. Linn. Soc. London, Bot. 9: 98 (1916)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron microphyllum J.J.Sm.; Bull. Jard. Bot. Buitenz., Ser. 2, 8: 51 (1912), nom. illeg.
species :
Rhododendron minus
Michx.; Lam. J. Hist. Nat. 1: 412 (1792); Michx. Fl. Bor. Amer. 1: 258
Name: Piedmont rhododendron
Distribution: USA (Alabama, Georgia, Kentucky, North Carolina, South Carolina, Tennessee, Connecticut)
75 USA 78 USA
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Caroliniana
Synonyms: hidden
= Azalea minor (Michx.) Kuntze; Revis. Gen. Pl. 2: 386 (1891)
= Rhododendron carolinianum f. luteum Frisbie; J. Arnold Arbor. 40: 156 (1959)
= Rhododendron carolinianum Rehder; Rhodora 14: 99 (1912)
= Rhododendron carolinianum var. album (Rehder) Rehder; J. Arnold Arbor. 4: 250 (1923)
= Rhododendron carolinianum var. foliatum Rehder; J. Arnold Arbor. 7: 33 (1926)
= Rhododendron carolinianum var. margarettae Ashe; Rhodora 23: 177 (1921)
= Rhododendron cuthbertii Small; Torreya 2: 9 (1902)
= Rhododendron margarettae (Ashe) Ashe; J. Elisha Mitchell Sci. Soc. 38: 91 (1922)
= Rhododendron minus f. harbisonii Rehder; Rhodora 14: 102 (1912)
= Rhododendron minus var. majus (G.Don) D.H.Voss; J. Amer. Rhododendron Soc. 68: 88 (2014)
= Rhododendron minus var. margaretiae Peattie; J. Elisha Mitchell Sci. Soc. 45: 248 (1930)
= Rhododendron parviflorum DC.; Prodr. [A. P. de Candolle] 7: 723 (1839), nom. inval.
= Rhododendron punctatum Andrews; Bot. Repos. 1: t. 36 (1798)
= Rhododendron punctatum var. album Rehder; Cycl. Amer. Hort. [L.H.Bailey] 4: 1523 (1902)
= Rhododendron punctatum var. majus G.Don; Gen. Hist. 3: 844 (1834)
= Rhododendron punctatum var. minus P.Watson; Dendrol. Brit. 2: t. 162A (1825)
variant :
var. chapmanii
(Alph.Wood) Gandhi & Zarucchi; Harvard Pap. Bot. 14(1): 1 (2009)
Name: Chapman´s rhododendron
Distribution: USA (Florida)
78 USA
Synonyms: hidden
= Azalea chapmanii (A.Gray) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron chapmanii A.Gray; Proc. Amer. Acad. Arts 12: 61 (1877)
= Rhododendron minus var. chapmanii (A.Gray) W.H.Duncan & Pullen; Brittonia 14: 297 (1962)
= Rhododendron punctatum var. chapmanii Alph.Wood; Amer. Bot. Fl. 204 (1870)
species :
Rhododendron minutiflorum
Hu; J. Arnold Arbor. 12(3): 155-156 (1931)
Distribution: China (Guangxi, N-Guangdong)
36 CHI
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
species :
Rhododendron minyaense
M.N.Philipson & Philipson; Notes Roy. Bot. Gard. Edinburgh 34(1): 45 (1975)
Distribution: China (NW-Sichuan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Lapponica
species :
Rhododendron mirabile
Kingdon-Ward; Gard. Chron., Ser. 3, 92: 465 (1932)
Distribution: Myanmar (Chin, Kachin, Sagaing)
41 MYA
species :
Rhododendron mitriforme
P.C.Tam; Bull. Bot. Res., Harbin 2(4): 91 (1982)
Distribution: China (NE-Guangxi, SE-Guangxi, SW-Hunan)
36 CHI
variant :
var. setaceum
P.C.Tam; Bull. Bot. Res., Harbin 2(4): 91-92, f. 4 (1982)
Distribution: China (Guangxi)
36 CHI
Synonyms: hidden
= Rhododendron xinganense G.Z.Li; Guihaia 3(2): 84 (1983)
species :
Rhododendron miyiense
W.K.Hu; Bull. Bot. Res., Harbin 8(3): 52-53, f. 3 (1988)
Distribution: China (SW-Sichuan)
36 CHI
species :
Rhododendron mogeanum
Argent; Folia Malaysiana 4(2): 111 (2003)
Distribution: Borneo (Kalimantan)
42 BOR
species :
Rhododendron molle
(Blume) G.Don; Gen. Hist. 3: 846 (1834)
Distribution: China (Anhui, Fujian, Guangdong, Guangxi, Guizhou, Henan, Hubei, Hunan, Jiangsu, Jiangxi, Sichuan, Yunnan, Zhejiang)
36 CHI
Remarks: Subgen. Pentanthera, Sect. Pentanthera
Synonyms: hidden
= Azalea chinensis Steud.; Nomencl. Bot. [Steudel], ed. 2, 1: 175 (1840), orth. var.
= Azalea mollis Blume; Cat. Gewass. Buitenz. 44 (1823)
= Azalea pontica var. sinensis (G.Lodd.) Lindl.; Edwards´s Bot. Reg. 15: t. 1253 (1829)
= Azalea sinensis G.Lodd.; Bot. Cab. 9: t. 885 (1824)
= Rhododendron davisii Koehne; Deutsche Dendrol. 458 (1893)
= Rhododendron sinense (G.Lodd.) Sweet; Brit. Fl. Gard. 3: t. 290 (1829)
= Rhododendron sinense var. flammeum Sweet; Brit. Fl. Gard. 3: t. 290 (1829)
= Rhododendron sinense var. flavescens Sweet; Brit. Fl. Gard. 3: t. 290 (1829)
species :
Rhododendron mollianum
Koord.; Nova Guinea 8: 187 (1909)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron mollicomum
Balf.f. & W.W.Sm.; Notes Bot. Gard. Edn. 9: 249 (1916)
Distribution: China (SW-Sichuan, NW-Yunnan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Scabrifolia
Synonyms: hidden
= Rhododendron mollicomum var. rockii Tagg; Notes Roy. Bot. Gard. Edinburgh 15: 114 (1926)
species :
Rhododendron monanthum
Balf.f. & W.W.Sm.; Notes Bot. Gard. Edn. 9: 250 (1916)
Distribution: China (NW-Yunnan); SE-Tibet; SE-Myanmar
36 CHI TIB 41 MYA
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Monantha
species :
Rhododendron monkoboense
Argent; Folia Malaysiana 4(2): 113 (2003)
Distribution: Borneo (Sabah)
42 BOR
species :
Rhododendron monodii
(H.J.Lam) Argent; Rhododendrons subgen. Vireya 50 (2006)
Distribution: Sulawesi
42 SUL
Synonyms: hidden
= Rhododendron quadrasianum f. monodii H.J.Lam; Blumea 5: 576 (1945)
species :
Rhododendron montiganum
T.L.Ming; Acta Bot. Yunnan. 6(2): 164, f. 4 (1984)
Distribution: China (NE-Yunnan)
36 CHI
species :
Rhododendron montroseanum
Davidian; Notes Roy. Bot. Gard. Edinburgh 37(2): 338 (1979)
Distribution: S-Tibet
36 TIB
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Grandia
Synonyms: hidden
= Rhododendron mollyanum Cowan & Davidian; Rhododendron Year Book 8: 72 (1953) (non R. mollianum Koord. (1909)
species :
Rhododendron morii
Hayata; J. Coll. Sci. Imp. Univ. Tokyo 30: 173 (1911)
Distribution: C-Taiwan
38 TAI
Synonyms: hidden
= Rhododendron morii var. taitunense (T.Yamaz.) D.F.Chamb.; R. H. S. Rhododendron Handb. 1998: 350 (1998)
= Rhododendron pseudochrysanthum subsp. morii (Hayata) T.Yamaz.; J. Jap. Bot. 56(11): 366 (1981)
= Rhododendron pseudochrysanthum var. taitunense T.Yamaz.; J. Jap. Bot. 56(11): 366 (1981)
species :
Rhododendron moulmainense
Hook.f.; Bot. Mag. 82: t. 4904 (1856)
Distribution: China (S-Yunnan); Bhutan; NE-India (Arunachal Pradesh); Myanmar (Mon, Kachin, Shan); Thailand; Laos; Cambodia; Vietnam; peninsular Malaysia (Gunung Jerai, Kedah, Cameron Highlands, Pahang)
36 CHI 40 BHU IND 41 CBD LAO MYA THA VIE 42 MLY
Remarks: Subgen. Azaleastrum, Sect. Choniastrum
Synonyms: hidden
= Azalea moulmainensis (Hook.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Azalea westlandii Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhaphis echinulatus Nees ex Royle; Ill. Bot. Himal. Mts. [Royle] 417 (1840)
= Rhododendron klossii Ridl.; J. Fed. Malay States Mus. 4: 43 (1909)
= Rhododendron laoticum Dop; Fl. Indo-Chine [P.H.Lecomte et al.] 3: 735 (1930)
= Rhododendron leucobotrys Ridl.; J. Fed. Malay States Mus. 4: 43 (1909)
= Rhododendron nematocalyx Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 10(47-48): 124-125 (1917)
= Rhododendron oxyphyllum Franch.; J. Bot. [Morot] 12(15-16): 264 (1898)
= Rhododendron pectinatum Hutch.; Gard. Chron., Ser. 3, 101: 119 (1937)
= Rhododendron siamense Diels; Repert. Spec. Nov. Regni Veg. 4(71-72): 289 (1907)
= Rhododendron stenaulum Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 10(47-48): 157-159 (1917)
species :
Rhododendron moupinense
Franch.; Bull. Soc. Bot. Fr. 33: 233 (1886); et in Nouv. Arch. Mus. Paris Ser. 2(10): 52, t. 12 (1887 publ. 1888)
Distribution: China (Sichuan, Guizhou, NE-Yunnan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Moupinensia
species :
Rhododendron mucronatum
(Blume) G.Don; Gen. Hist. 3: 846 (1834)
Distribution: only cultivated known; Madeira [I] (Madeira Isl. [I]); São Tomé [I]; China [I]; Japan [I]; Taiwan [I]; Vietnam [I]; Java [I]
21 mdr 23 sao 36 chi 38 jap tai 41 vie 42 jaw
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
Synonyms: hidden
= Azalea alba Sweet ex Poit.; Ann. Inst. Roy. Hort. Fromont 1: 104 (1829), pro syn.
= Azalea indica var. alba Lindl.; Bot. Mag. 10: t. 811 (1824)
= Azalea ledifolia var. noordtiana Wittm.; Gartenflora 59: 310 (1910)
= Azalea mucronata Blume; Cat. Gewass. Buitenz. 44 (1823)
= Azalea narcissiflora (Planch.) Hovey; Mag. Hort. Bot. 22: 9 (1856)
= Azalea prolifera Poit.; Ann. Inst. Roy. Hort. Fromont 1: 104 (1829)
= Azalea purpurea Dum.Cours.; Bot. Cult., ed. 2, 3: 337 (1811), nom. nud.
= Azalea rosmarinifolia Burm.f.; Fl. Ind. [N. L. Burman] 43 (1768)
= Azalea rosmarinifolia var. alba (Lindl.) Rehder; Cycl. Amer. Hort. [L.H.Bailey] 1: 123 (1900)
= Azalea rosmarinifolia var. narcissiflora (Planch.) Rehder; Cycl. Amer. Hort. [L.H.Bailey] 1: 123 (1900)
= Rhododendron argyi H.Lév.; Repert. Spec. Nov. Regni Veg. 12(312-316): 102 (1913)
= Rhododendron burmannii G.Don; Gen. Hist. 3: 846 (1834)
= Rhododendron hortense f. criterion Nakai; Nakai & G. Koidz., Trees Shrubs Japan, rev. ed. 150 (1927)
= Rhododendron hortense f. noordtianum (Wittm.) Nakai; Nakai & G. Koidz., Trees Shrubs Japan, rev. ed. 150 (1927)
= Rhododendron indicum var. incarnatum DC.; Prodr. [A. P. de Candolle] 7: 726 (1839)
= Rhododendron ledifolium G.Don; Gen. Hist. 3: 846 (1834)
= Rhododendron ledifolium var. album (Lindl.) Rehder; Mitt. Deutsch. Dendrol. Ges. 24: 225 (1915 publ. 1916)
= Rhododendron ledifolium var. leucanthum (Bunge) DC.; Prodr. [A. P. de Candolle] 7: 727 (1839)
= Rhododendron ledifolium var. narcissiflorum (Planch.) Maxim.; Mém. Acad. Imp. Sci. Saint Pétersbourg, Sér. 7, 16(9): 36 (1870)
= Rhododendron ledifolium var. noordtianum (Wittm.) Rehder; Mitt. Deutsch. Dendrol. Ges. 24: 225 (1915 publ. 1916)
= Rhododendron leucanthum Bunge; Mém. Acad. Imp. Sci. St.-Pétersbourg Divers Savans 2: 115 (1835)
= Rhododendron macranthum var. albiflorum-souchetianum Lem.; Herb. Gén. Amat., Sér. 2, 3: t. 15 (1843)
= Rhododendron mucronatum f. amethystinum E.H.Wilson; Wils. & Rehd., Monogr. Azaleas 73 (1921)
= Rhododendron mucronatum f. narcissiflorum (Planch.) E.H.Wilson; Wils. & Rehd., Monogr. Azaleas 71 (1921)
= Rhododendron mucronatum f. noordtianum (Wittm.) E.H.Wilson; Wils. & Rehd., Monogr. Azaleas 71 (1921)
= Rhododendron mucronatum f. plenum (Sims) E.H.Wilson; Wils. & Rehd., Monogr. Azaleas 73 (1921)
= Rhododendron mucronatum f. ruyangense X.J.Zhou; North. Hort. 2020(9): 79-81 (2020)
= Rhododendron mucronatum f. sekidera (Komatsu) E.H.Wilson; Wils. & Rehd., Monogr. Azaleas 72 (1921)
= Rhododendron narcissiflorum Planch.; Fl. Serres Jard. Eur. 9: 82 (1853)
= Rhododendron rosmarinifolium Dippel; Handb. Laubholzk. 1: 421 (1889)
= Rhododendron rosmarinifolium f. fujimanyo Komatsu; Bot. Mag. (Tokyo) 32: (36) (1918)
= Rhododendron rosmarinifolium f. oriokiu Komatsu; Bot. Mag. (Tokyo) 32: (35) (1918)
= Rhododendron rosmarinifolium var. album (Lindl.) C.K.Schneid.; Ill. Handb. Laubholzk. 2: 504 (1911)
= Rhododendron rosmarinifolium var. narcissiflorum (Planch.) C.K.Schneid.; Ill. Handb. Laubholzk. 2: 504 (1911)
= Rhododendron sekidera Komatsu; Bot. Mag. (Tokyo) 32: (46) (1918)
species :
Rhododendron mucronulatum
Turcz.; Bull. Soc. Imp. Naturalistes Moscou 7: 155 (1837); 21(1): 585 (1848)
Distribution: Russian Far East (Amur, Khabarovsk, Primorye); China (Nei Mongol, Liaoning, Hebei, Shandong, Jiangsu); Mongolia; North Korea; South Korea; Japan (Honshu, Shikoku, Kyushu)
31 RFE 36 CHI 37 MON 38 JAP KOR NKO
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Rhodorastra
Synonyms: hidden
= Rhododendron dauricum subsp. mucronulatum (Turcz.) Vorosch.; Florist. Issl. Razn. Raionakh S.S.S.R. [A.K.Skvortsov] 185 (1985)
= Rhododendron dauricum var. ciliatum (Nakai) E.H.Wilson; J. Arnold Arbor. 4: 51 (1923)
= Rhododendron dauricum var. mucronulatum (Turcz.) Maxim.; Mém. Acad. Imp. Sci. St.- Petersbourg, Ser. 7, 16(9): 44 (1870)
= Rhododendron mucronulatum f. acuminatum (Hutch.) Rehder; Bibliogr. Cult. Trees 512 (1949)
= Rhododendron mucronulatum f. albiflorum (Nakai) Okuyama; J. Jap. Bot. 30: 43 (1955)
= Rhododendron mucronulatum f. ciliatum (Nakai) Kitag.; Neolin. Fl. Manshur. 500 (1979)
= Rhododendron mucronulatum f. leucanthum T.Yamaz.; Fl. Japan, 3a: 19 (1993)
= Rhododendron mucronulatum f. lucidum (Nakai) M.Kim; Korean Endemic Pl. 306 (2004)
= Rhododendron mucronulatum var. acuminatum Hutchison; Spec. Rhododendron 227 (1930)
= Rhododendron mucronulatum var. albiflorum Nakai; J. Coll. Sci. Imp. Univ. Tokyo 31: 76 (1911)
= Rhododendron mucronulatum var. chejuense Davidian; Rhododendron Species, 2 (Ser. Arboreum-Lacteum): 309 (1989)
= Rhododendron mucronulatum var. ciliatum Nakai; Bot. Mag. (Tokyo) 31: 241 (1917)
= Rhododendron mucronulatum var. latifolium Nakai; Bot. Mag. (Tokyo) 33: 70 (1922)
= Rhododendron mucronulatum var. lucidum Nakai; J. Jap. Bot. 19: 375 (1942)
= Rhododendron mucronulatum var. taquetii (H.Lév.) Nakai; Saishu-to Kuan-to Shokubutsu Hokoku-sho [Fl. Quelpaert Isl.]: 71 (1914)
= Rhododendron taquetii H.Lév.; Repert. Spec. Nov. Regni Veg. 12: 101 (1913)
species :
Rhododendron multicolor
Miq.; Fl. Ned. Ind., Eerste Bijv. 586 (1861)
Distribution: Sumatra
42 SUM
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Azalea multicolor (Miq.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron curtisii T.Moore; Florist & Pomol. 1884: 113 (1884)
species :
Rhododendron multiflorum
(Maxim.) Craven; Blumea 56(1): 34 (2011)
Distribution: Japan (Hokkaido, Honshu)
38 JAP
Synonyms: hidden
= Menziesia ciliicalyx var. bicolor Makino; J. Jap. Bot. 1: 10 (1916)
= Menziesia ciliicalyx var. multiflora (Maxim.) Makino; Bot. Mag. (Tokyo) 22: 159 (1908)
= Menziesia ciliicalyx var. purpurea Makino; J. Jap. Bot. 1: 10 (1916)
= Menziesia lasiophylla Nakai; Nakai & Koidz. Trees & Shrubs Japan Proper, ed. 1, 36 (1922), japonice
= Menziesia lasiophylla var. bicolor (Makino) Hiyama; J. Jap. Bot. 39: 126 (1964)
= Menziesia multiflora f. bicolor (Makino) T.Yamaz.; Fl. Japan, 3a: 13 (1993)
= Menziesia multiflora f. brevicalyx Hiyama; J. Jap. Bot. 39: 127 (1964)
= Menziesia multiflora Maxim.; Mém. Acad. Imp. Sci. Saint Pétersbourg, Sér. 7, 16(9): 11 (1871)
= Menziesia multiflora var. longicalyx Kitam.; Acta Phytotax. Geobot. 25(2-3): 38 (1972)
= Menziesia multiflora var. purpurea (Makino) Ohwi; Fl. Jap. 883 (1953)
= Rhododendron multiflorum f. bicolor (Makino) Craven; Blumea 56: 34 (2011)
= Rhododendron multiflorum f. brevicalyx (Hiyama) Craven; Blumea 56: 34 (2011)
species :
Rhododendron multinervium
Sleumer; Reinwardtia 5: 117 (1960)
Distribution: New Guinea (Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron muscicola
J.J.Sm.; Nova Guinea 18: 93 (1936)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron muscipulum
Danet; Adansonia 34(2): 344 (2012)
Distribution: New Guinea (Irian Jaya)
42 NWG
species :
Rhododendron myrsinifolium
Ching ex W.P.Fang & M.Y.He; Bull. Bot. Res., Harbin 2(2): 88-89, pl. 6 (1982)
Distribution: China (S-Guangxi)
36 CHI
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
Synonyms: hidden
= Rhododendron caespitulum P.C.Tam; Survey Genus Rhododendron S. China 66, 110, f. 26 (1983)
species :
Rhododendron myrsinites
Sleumer; Reinwardtia 5: 142 (1960)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron naamkwanense
Merr.; Lingnan Sci. J. 13(1): 42-43 (1934)
Distribution: China (Guangdong, S-Jiangxi)
36 CHI
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
Synonyms: hidden
= Rhododendron riparium Wang & P.C.Tam; Med. Mat. Guangdong 4: 33, f. 1 (1978), nom. illeg.
= Rhododendron ripaecola P.C.Tam; Survey Genus Rhododendron S. China 110, 65 (1983)
variant :
var. cryptonerve
P.C.Tam; Bull. Bot. Res., Harbin 2(1): 94 (1982)
Distribution: China (Guangdong, S-Jiangxi)
36 CHI
species :
Rhododendron nakaharae
Hayata; J. Coll. Agric. Imp. Univ. Tokyo 25(19): 153 (1908)
Distribution: N-Taiwan
38 TAI
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
Synonyms: hidden
= Rhododendron serpyllifolium Hayata; Bot. Mag. (Tokyo) 20: 72 (1906)
species :
Rhododendron nakotiltum
Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 12(57-58): 143-144 (1920)
Distribution: China (NW-Yunnan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Taliensia
species :
Rhododendron nanjianense
K.M.Feng & Z.H.Yang; Acta Bot. Yunnan. 9(1): 55 (1987)
Distribution: China (W-Yunnan)
36 CHI
species :
Rhododendron nanophyton
Sleumer; Reinwardtia 5: 62 (1960)
Distribution: Sulawesi
42 SUL
Remarks: Subgen. Rhododendron
variant :
var. petrophilum
Sleumer; Reinwardtia 5: 63 (1960)
Distribution: Sulawesi
42 SUL
species :
Rhododendron nanpingense
P.C.Tam; Bull. Bot. Res., Harbin 2(4): 82-83 (1982)
Distribution: China (C-Fujian)
36 CHI
species :
Rhododendron nantouense
S.S.Ying; New Taxa New Names 4: 133 (2022)
Distribution: Taiwan
38 TAI
Remarks: provisionally accepted name
species :
Rhododendron natalicium
Sleumer; Reinwardtia 5: 118 (1960)
Distribution: New Guinea (Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron neobritannicum
Sleumer; Blumea 21(1): 361 (1973)
Distribution: Bismarck Arch. (New Britain)
43 BIS
species :
Rhododendron neriiflorum
Franch.; Bull. Soc. Bot. Fr. 33: 230 (1886)
subspecies :
subsp. neriiflorum
Distribution: China (W-Yunnan); SE-Tibet
36 CHI TIB
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Neriiflora
Synonyms: hidden
= Azalea neriiflora (Franch.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron euchaites Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 43-44 (1920)
= Rhododendron neriiflorum subsp. euchaites (Balf.f. & Forrest) Tagg; Spec. Rhododendron 523 (1930)
= Rhododendron neriiflorum subsp. phoenicodum (Balf.f. & Forrest) Tagg; Spec. Rhododendron 533 (1930)
= Rhododendron neriiflorum var. euchaites (Balf.f. & Forrest) Davidian; Rhododendron Species, 3 (Ser. Neriiflorum-Thomsonii, etc.): 99 (1992)
= Rhododendron phoenicodum Balf.f. & Farrer; Notes Roy. Bot. Gard. Edinburgh 13: 285 (1922)
variant :
var. agetum
(Balf.f. & Forrest) T.L.Ming; Acta Bot. Yunnan. 6(2): 169 (1984)
Distribution: China (Yunnan)
36 CHI
Synonyms: hidden
= Rhododendron agetum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 29 (1920)
= Rhododendron neriiflorum subsp. agetum (Balf.f. & Forrest) Tagg; Spec. Rhododendron 533 (1930)
= Rhododendron neriiflorum var. agetum (Balf.f. & Forrest) Davidian; Rhododendron Species, 3 (Ser. Neriiflorum-Thomsonii, etc.): 99 (1992), isonym
variant :
var. appropinquans
(Tagg & Forrest) W.K.Hu; Fl. Reipubl. Popularis Sin. 57(2): 290 (1995)
Distribution: China (Yunnan); SE-Tibet; Bhutan; NE-India (Arunachal Pradesh); Myanmar (Kachin, Sagaing)
36 CHI TIB 40 BHU IND 41 MYA
Synonyms: hidden
= Rhododendron floccigerum subsp. appropinquans (Tagg & Forrest) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 37(2): 333 (1979)
= Rhododendron floccigerum var. appropinquans Tagg & Forrest; Notes Roy. Bot. Gard. Edinburgh 15(75): 312-313 (1927)
subspecies :
subsp. phaedropum
(Balf.f. & Farrer) Tagg; Stevenson, Spec. Rhododendron 533 (1930)
Distribution: China (W-Yunnan); SE-Tibet; NE-India (Arunachal Pradesh); Myanmar (Kachin)
36 CHI TIB 40 IND 41 MYA
Synonyms: hidden
= Rhododendron neriiflorum var. phaedropum (Balf.f. & Farrer) T.L.Ming; Acta Bot. Yunnan. 6(2): 169 (1984)
= Rhododendron phaedropum Balf.f. & Farrer; Notes Roy. Bot. Gard. Edinburgh 13: 283 (1922)
= Rhododendron tawangense K.C.Sahni & H.B.Naithani; Indian Forester 105: 685 (1979)
species :
Rhododendron nervulosum
Sleumer; Bot. Jahrb. Syst. 71: 146 (1940)
Distribution: Borneo
42 BOR
Remarks: Subgen. Rhododendron
species :
Rhododendron ngawchangensis
M.N.Philipson & Philipson; Notes Roy. Bot. Gard. Edinburgh 40(1): 228 (1982)
Distribution: Myanmar
41 MYA
species :
Rhododendron nhatrangense
Dop; Fl. Indo-Chine [P.H.Lecomte et al.] 3: 743 (1930)
Distribution: C-Vietnam
41 VIE
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. unknown
species :
Rhododendron nieuwenhuisii
J.J.Sm.; Ic. Bogor. t. 323 (1910)
Distribution: Borneo
42 BOR
Remarks: Subgen. Rhododendron
species :
Rhododendron nigroglandulosum
Nitz.; Rhododendrons Magnolias Camellias 1975: 26, f. 2-3 (1975)
Distribution: China (W-Sichuan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Taliensia
species :
Rhododendron nipponicum
Matsum.; Bot. Mag. (Tokyo) 13: 17 (1889)
Distribution: Japan (Honshu)
38 JAP
Remarks: Subgen. Pentanthera, Sect. Viscidula
Synonyms: hidden
= Azalea nipponica (Matsum.) H.F.Copel.; Amer. Midl. Naturalist 30: 595 (1943)
species :
Rhododendron nitidulum
Rehder & E.H.Wilson; Sarg., Pl. Wilson. [Sargent] 1: 509 (1913)
Distribution: China (W-Sichuan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Lapponica
Synonyms: hidden
= Rhododendron nitidulum var. nubigenum Rehder & E.H.Wilson; Sarg., Pl. Wilson. [Sargent] 1: 510 (1913)
= Rhododendron yulingense W.P.Fang; Acta Sci. Nat. Univ. Szechuan. 1957(2): 217 (1957 publ. 1957)
variant :
var. omeiense
M.N.Philipson & Philipson; Notes Roy. Bot. Gard. Edinburgh 34(1): 24 (1975)
Distribution: China (C-Sichuan)
36 CHI
species :
Rhododendron nivale
Hook.f.; Rhod. Sikkim-Himal. t. 26 (1851)
subspecies :
subsp. nivale
Distribution: China (S-Qinghai); Tibet; Nepal; Bhutan; N-India (Chumbi, Sikkim, Uttarakhand)
36 CHI TIB 40 BHU IND NEP
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Lapponica
Synonyms: hidden
= Azalea nivalis (Hook.f.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron paludosum Hutch. & Kingdon-Ward; Spec. Rhododendron, 418 (1930), et Notes Bot. Gard. Edinb. 16: 175 (1931), latine
subspecies :
subsp. australe
M.N.Philipson & Philipson; Notes Roy. Bot. Gard. Edinburgh 34(1): 54 (1975)
Distribution: China (SW-Sichuan, NW-Yunnan, C-Yunnan)
36 CHI
subspecies :
subsp. boreale
M.N.Philipson & Philipson; Notes Roy. Bot. Gard. Edinburgh 34(1): 52 (1975)
Distribution: China (S-Qinghai, SW-Sichuan, NW-Sichuan, SW-Yunnan, NW-Yunnan); SE-Tibet
36 CHI TIB
Synonyms: hidden
= Rhododendron alpicola Rehder & E.H.Wilson; Sarg., Pl. Wilson. [Sargent] 1: 506 (1913)
= Rhododendron alpicola var. strictum Rehder & E.H.Wilson; Sarg., Pl. Wilson. [Sargent] 1: 506 (1913)
= Rhododendron batangense Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13: 31 (1920)
= Rhododendron nigropunctatum Bureau & Franch.; J. Bot. [Morot] 34: 95 (1891)
= Rhododendron oreinum Balf.f.; Notes Roy. Bot. Gard. Edinburgh 13: 54 (1920)
= Rhododendron oresbium Balf.f. & Kingdon-Ward; Notes Roy. Bot. Gard. Edinburgh 9: 253 (1916)
= Rhododendron ramosissimum Franch.; J. Bot. [Morot] 1898, 264 (1898)
= Rhododendron stictophyllum Balf.f.; Notes Roy. Bot. Gard. Edinburgh 11: 139 (1919)
= Rhododendron vicarium Balf.f.; Notes Roy. Bot. Gard. Edinburgh 12: 176 (1920)
= Rhododendron violaceum Rehder & E.H.Wilson; Pl. Wilson. [Sargent] 1(3): 511 (1913)
= Rhododendron yaragongense Balf.f.; in Notes Bot. Gard. Edinb. 13: 64 (1920)
species :
Rhododendron niveoflorum
Argent; Folia Malaysiana 4(2): 115 (2003)
Distribution: Borneo (Sarawak)
42 BOR
species :
Rhododendron niveum
Hook.f.; Rhododendron Sikkim Himalaya t. 4 (1851)
Distribution: S-Tibet; Bhutan; N-India (Sikkim)
36 TIB 40 BHU IND
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Arborea
Synonyms: hidden
= Azalea nivea (Hook.f.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron blumei Nutt.; Hooker´s J. Bot. Kew Gard. Misc. 5: 366 (1853)
species :
Rhododendron noriakianum
Suzuki; Trans. Nat. Hist. Soc. Taiwan 25: 40 (1935)
Distribution: Taiwan
38 TAI
species :
Rhododendron nortoniae
Merr.; Philipp. J. Sci. 1: Suppl. 220 (1906)
Distribution: Philippines (Catanduanes, Negros, Mindanao)
42 PHI
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron catanduanense Merr. ex H.F.Copel.; Philipp. J. Sci. 40: 136, 149 (1929)
species :
Rhododendron nubicola
Wernham; Trans. Linn. Soc. London, Bot. 9: 98 (1916)
Distribution: New Guinea (Irian Jaya, Papua New Guinea)
42 NWG
Synonyms: hidden
= Rhododendron acrocline Sleumer; Reinwardtia 5: 158 (1960)
= Rhododendron culminicola var. nubicola (Wernham) Sleumer; Reinwardtia 5: 221 (1960)
species :
Rhododendron nudipes
Nakai; Bot. Mag. (Tokyo) 40: 484 (1926)
Distribution: Japan (Kyushu)
38 JAP
Remarks: Subgen. Tsutsusi, Sect. Brachycalyx
Synonyms: hidden
= Rhododendron nudipes f. fugenense Minamit.; J. Jap. Bot. 94(4): 229 (2019)
= Rhododendron nudipes f. gokanosyoense Minamit.; J. Jap. Bot. 93(2): 96 (2018)
= Rhododendron nudipes f. gracilescens (Nakai) Minamit.; J. Jap. Bot. 94: 229 (2019)
= Rhododendron nudipes f. lobatum Minamit.; J. Jap. Bot. 94(4): 229 (2019)
= Rhododendron reticulatum var. nudipes (Nakai) Hatus.; (p. p. excl. syn.)
variant :
var. kirishimense
T.Yamaz.; J. Jap. Bot. 59(7): 209 (1984)
Distribution: Japan (Kyushu)
38 JAP
variant :
var. kyushumontanum
Minamit.; J. Jap. Bot. 93(2): 96 (2018)
Distribution: Japan
38 JAP
Synonyms: hidden
= Rhododendron nudipes f. kyushumontanum Minamit.; J. Jap. Bot. 93(2): 96 (2018)
variant :
var. nagasakianum
(Nakai) T.Yamaz.; Fl. Japan, 3a: 36 (1993)
Distribution: Japan (Kyushu)
38 JAP
Synonyms: hidden
= Rhododendron gracilescens (Nakai) Maek.; J. Jap. Bot. 27: 329 (1952), in adnot.
= Rhododendron nagasakianum Nakai; Bot. Mag. (Tokyo) 40: 484 (1926)
= Rhododendron nagasakianum var. gracilescens Nakai; Bot. Mag. (Tokyo) 40: 484 (1926)
= Rhododendron nudipes var. gracilescens (Nakai) H.Hara; Enum. Spermatophytarum Japon. 1: 46 (1948)
= Rhododendron yakumontanum Masam.; Prelim. Rep. Veg. Yakus. 106 (1929)
variant :
var. sumikoyamadae
Minamit.; J. Jap. Bot. 93(2): 98 (2018)
Distribution: Japan
38 JAP
species :
Rhododendron nummatum
J.J.Sm.; Nova Guinea 18: 91 (1936)
Distribution: New Guinea (Irian Jaya, Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron nuttallii
Booth ex Nutt.; Hooker´s J. Bot. Kew Gard. Misc. 5: 355 (1853)
Distribution: China (NW-Yunnan); SE-Tibet; NE-India (Arunachal Pradesh); Myanmar (Chin, Kachin, Sagaing); N-Vietnam
36 CHI TIB 40 IND 41 MYA VIE
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Maddenia
Synonyms: hidden
= Azalea nuttallii (Booth ex Nutt.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron goreri Davidian; Quart. Bull. Amer. Rhododendron Soc. 34(4): 213 (1980)
= Rhododendron sinonuttallii Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13: 60 (1920)
species :
Rhododendron nyingchiense
R.C.Fang & S.H.Huang; Fl. Xizang. 3: 674 (1986)
Distribution: SE-Tibet
36 TIB
species :
Rhododendron nymphaeoides
W.K.Hu; Bull. Bot. Res., Harbin 8(3): 54-55, pl. 4 (1988)
Distribution: China (SE-Sichuan)
36 CHI
species :
Rhododendron oblancifolium
M.Y.Fang; Not. & Bot. Rhodod. 2: 25, f. 2 (1985)
Distribution: China (NE-Guizhou)
36 CHI
species :
Rhododendron occidentale
(Torr. & A.Gray) A.Gray; Bot. California [W.H.Brewer] 1: 458 (1876)
Name: Western azalea
Distribution: USA (California, Oregon)
73 USA 76 USA
Remarks: Subgen. Pentanthera, Sect. Pentanthera
Synonyms: hidden
= Azalea californica (Hook.) Kuntze; Revis. Gen. Pl. 2: 387 (1891), isonym
= Azalea californica (Hook.) Torr. & A.Gray ex Durand; J. Acad. Nat. Sci. Philadelphia, Ser. 2, 3: 94 (1855)
= Azalea nudiflora var. ciliata Kellogg; Proc. Calif. Acad. Sci. 1: 60 (1855)
= Azalea occidentalis Torr. & A.Gray; Pacif. Railr. Rep. Whipple, Bot. 4(5
= Rhododendron occidentale var. californicum (Torr. & A.Gray ex Durand) Hrusa; Madroño 59: 140 (2012)
= Rhododendron occidentale var. paludosum Jeps.; Man. Fl. Pl. Calif. [Jepson] 741 (1925)
= Rhododendron occidentale var. sonomense (Greene) Rehder; Wils. & Rehd., Monogr. Azaleas 127 (1921)
= Rhododendron sonomense Greene; Pittonia 2: 172 (1891)
species :
Rhododendron ochraceum
Rehder & E.H.Wilson; Pl. Wilson. [Sargent] 1: 534-535 (1913)
Distribution: China (S-Sichuan, NE-Yunnan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Maculifera
variant :
var. brevicarpum
W.K.Hu; Bull. Bot. Res., Harbin 8(3): 56-57 (1988)
Distribution: China (Chongqing)
36 CHI
species :
Rhododendron octandrum
M.Y.He; J. Sichuan Univ., Nat. Sci. Ed. 24(1): 84, f. 2 (1987)
Distribution: China (Guizhou)
36 CHI
species :
Rhododendron oldhamii
Maxim.; Mém. Acad. Petersb., Ser. VIl. 16: n. IX. 34 (1871)
Distribution: Taiwan
38 TAI
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
Synonyms: hidden
= Azalea oldhamii (Maxim.) Kuntze; Revis. Gen. Pl. 2: 386 (1891)
= Rhododendron oldhamii var. glandulosum Hayata; J. Coll. Agric. Imp. Univ. Tokyo 25(19): 153-154 (1908)
= Rhododendron ovatosepalum Yamam.; J. Soc. Trop. Agric. 5: 405 (1933)
species :
Rhododendron oliganthum
Sleumer; Reinwardtia 5: 123 (1960)
Distribution: New Guinea (Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron opulentum
Sleumer; Reinwardtia 5: 85 (1960)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron orbiculare
Decne.; Fl. des Serres 22: 169 (1877)
subspecies :
subsp. orbiculare
Distribution: China (SW-Sichuan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Fortunea
Synonyms: hidden
= Rhododendron rotundifolium Davidian; J. As. Soc. N. China Brand. 7: 216 (1973)
subspecies :
subsp. cardiobasis
(Sleumer) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 39(2): 238 (1982)
Distribution: China (NE-Guangxi)
36 CHI
Synonyms: hidden
= Rhododendron cardiobasis Sleumer; Notizbl. Bot. Gart. Berlin-Dahlem 12: 434 (1935)
= Rhododendron orbiculare subsp. cardiobasis (Hand.-Mazz.) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 37(2): 331 (1979)
subspecies :
subsp. maolingense
G.Z.Li; Guihaia 15(4): 294-295 (1995)
Distribution: China (Guangxi)
36 CHI
subspecies :
subsp. oblongum
W.K.Hu; Bull. Bot. Res., Harbin 8(3): 58, pl. 11 (1988)
Distribution: China (NE-Guangxi)
36 CHI
species :
Rhododendron orbiculatum
Ridl.; J. Straits Branch Roy. Asiat. Soc. 63: 60 (1912)
Distribution: Borneo; Sulawesi
42 BOR SUL
Remarks: Subgen. Rhododendron
species :
Rhododendron oreadum
Wernham; Trans. Linn. Soc. London, Bot. 9: 98 (1916)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron filamentosum Wernham; Trans. Linn. Soc. London, Bot. 9: 97 (1916)
species :
Rhododendron oreites
Sleumer; Reinwardtia 5: 57 (1960)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
variant :
var. chlorops
Sleumer; Reinwardtia 5: 58 (1960)
Distribution: New Guinea (Irian Jaya)
42 NWG
species :
Rhododendron oreodoxa
Franch.; Bull. Soc. Bot. France 33: 230 (1886)
Distribution: China (S-Gansu, W-Hubei, Sichuan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Fortunea
Synonyms: hidden
= Rhododendron haematocheilum Craib; Gard. Chron., Ser. 3, 53: 214 (1913)
= Rhododendron limprichtii Diels; Repert. Spec. Nov. Regni Veg. 17(486-491): 195-196 (1921)
= Rhododendron reginaldii Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 11(52-53): 114-115 (1919)
variant :
var. adenostylosum
D.Fang & W.K.Hu; Acta Phytotax. Sin. 26(4): 304, f. 3 (1988)
Distribution: China (W-Sichuan); E-Tibet
36 CHI TIB
variant :
var. fargesii
(Franch.) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 37(2): 331 (1979)
Distribution: China (S-Gansu, S-Shaanxi, W-Hubei, NW-Sichuan)
36 CHI
Synonyms: hidden
= Rhododendron erubescens Hutch.; Bot. Mag. 142: t. 8643 (1916)
= Rhododendron fargesii Franch.; J. Bot. [Morot] 9(21): 390 (1895)
variant :
var. shensiense
D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 39(2): 240, Map 68 (1982)
Distribution: China (SW-Shaanxi)
36 CHI
Synonyms: hidden
= Rhododendron shensiense Ching; Notes Roy. Bot. Gard. Edinburgh 39: 240 (1982)
species :
Rhododendron oreogenum
L.C.Hu; Acta Phytotax. Sin. 30(6): 541-543, f. 1 (1992)
Distribution: SE-Tibet (Mêdog)
36 TIB
species :
Rhododendron oreotrephes
W.W.Sm.; Notes Bot. Gard Edin. 8: 201 (1914)
Distribution: China (SW-Sichuan, NW-Yunnan, NE-Yunnan); SE-Tibet; Myanmar (Kachin)
36 CHI TIB 41 MYA
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Triflora
Synonyms: hidden
= Rhododendron artosquameum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13: 234 (1922)
= Rhododendron cardioeides Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13: 239 (1922)
= Rhododendron depile Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13: 255 (1922)
= Rhododendron exquisitum Hutch.; Gard. Chron., Ser. 3, 92: 98 (1932)
= Rhododendron hypotrichotum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13: 268 (1922)
= Rhododendron phaeochlorum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13: 284 (1922)
= Rhododendron pubigerum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13: 289 (1922)
= Rhododendron timeteum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 12: 166 (1920)
= Rhododendron trichopodum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13: 304 (1922)
species :
Rhododendron orthocladum
Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 11: 104 (1919)
Distribution: China (SW-Sichuan, N-Yunnan, NW-Yunnan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Lapponica
Synonyms: hidden
= Rhododendron microleucum Hutch.; Gard. Chron., Ser. 3, 93: 334 (1933)
= Rhododendron orthocladum var. microleucum (Hutch.) M.N.Philipson & Philipson; Notes Roy. Bot. Gard. Edinburgh 34(1): 45 (1975)
variant :
var. longistylum
M.N.Philipson & Philipson; Notes Roy. Bot. Gard. Edinburgh 34(1): 44 (1975)
Distribution: China (N-Yunnan, NW-Yunnan)
36 CHI
species :
Rhododendron osuzuyamense
T.Yamaz.; J. Jap. Bot. 59(7): 208 (1984), nom. nov., et J. Jap. Bot. 94(4): 219 (2019)
Distribution: Japan (Kyushu)
38 JAP
Synonyms: hidden
= Rhododendron dilatatum var. glaucum Hatus.; Sci. Rep. Yokosuka City Mus. 15: 22 (1969)
= Rhododendron osuzuyamense f. albiflorum Hatus. ex Minamit.; J. Jap. Bot. 94(4): 220 (2019)
= Rhododendron viscistylum var. glaucum (Hatus.) Sugim.; (1972)
species :
Rhododendron ovatum
(Lindl.) Planch. ex Maxim.; Bull. Acad. Imp. Sci. Saint-Petersbourg 15(2): 230 (1871)
Distribution: China (Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hubei, Hunan, Jiangsu, Jiangxi, Sichuan, Zhejiang); Taiwan
36 CHI 38 TAI
Remarks: Subgen. Azaleastrum, Sect. Azaleastrum
Synonyms: hidden
= Azalea ovata Lindl.; J. Hort. Soc. 1: 149 (1846)
= Rhododendron lamprophyllum Hayata; Icon. Pl. Formosan. 3: 135 (1913)
= Rhododendron lamprophyllum var. ovalifolium T.Yamaz.; Rev. Gen. Rhododendron Japan, Taiwan, Korea & Sakhalin 28 (1996)
= Rhododendron ovatum var. prismatum P.C.Tam; Bull. Bot. Res., Harbin 2(1): 99 (1982)
= Rhododendron ovatum var. setuliferum M.Y.He; J. Sichuan Univ., Nat. Sci. Ed. 1984(1): 96 (1984)
species :
Rhododendron oxycoccoides
Sleumer; Reinwardtia 5: 139 (1960)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron pachycarpon
Sleumer; Reinwardtia 5: 186 (1960)
Distribution: New Guinea (Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron pachyphyllum
W.P.Fang; Acta Phytotax. Sin. 21(4): 460 (1983)
Distribution: China (SW-Hunan, NE-Guangxi)
36 CHI
Synonyms: hidden
= Rhododendron ziyuanense var. pachyphyllum (W.P.Fang) G.Z.Li; Guihaia 15(3): 196 (1995)
species :
Rhododendron pachypodum
Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 9: 254 (1916)
Distribution: China (Yunnan); NE-Myanmar (Kachin, Mandalay)
36 CHI 41 MYA
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Maddenia
Synonyms: hidden
= Rhododendron pilicalyx Hutch.; Notes Roy. Bot. Gard. Edinburgh 12: 66 (1919)
= Rhododendron rufosquamosum Hutch.; Notes Roy. Bot. Gard. Edinburgh 12: 63 (1919)
= Rhododendron scottianum Hutch.; Notes Roy. Bot. Gard. Edinburgh 12: 64 (1919) nom. illeg. superfl.
= Rhododendron supranubium Hutch.; Notes Roy. Bot. Gard. Edinburgh 12: 68 (1919)
species :
Rhododendron pachysanthum
Hayata; Ic. Pl. Formos. 3: 140 (1913)
Distribution: Taiwan
38 TAI
Synonyms: hidden
= Rhododendron pseudochrysanthum f. rufovelutinum T.Yamaz.; J. Jap. Bot. 56(11): 365 (1981)
= Rhododendron pseudochrysanthum var. rufovelutinum (T.Yamaz.) T.Yamaz.; Rev. Gen. Rhododendron Japan, Taiwan, Korea & Sakhalin 127 (1996)
= Rhododendron rufum subsp. pachysanthum (Hayata) S.S.Ying; Coloured Ill. Fl. Taiwan 5: 117 (1995)
= Rhododendron rufum var. pachysanthum (Hayata) S.S.Ying; Quart. J. Chin. Forest. 9(4): 118 (1976)
species :
Rhododendron pachystigma
Sleumer; Blumea 12: 110 (1963)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron pachytrichum
Franch.; Bull. Soc. Bot. France 33: 231 (1886)
Distribution: China (S-Shaanxi, SW-Sichuan, SE-Sichuan, NE-Yunnan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Maculifera
variant :
var. tenuistylosum
W.K.Hu; Acta Phytotax. Sin. 26(4): 304-305, f. 5 (1988)
Distribution: China (E-Sichuan)
36 CHI
species :
Rhododendron pangeanum
A.A.Mao & Bhaumik; Rhododendom Yearbook 29 (2012)
Distribution: NE-India (Arunachal Pradesh)
40 IND
Remarks: provisionally accepted name
species :
Rhododendron papillatum
Balf.f. & Cooper; Notes Roy. Bot. Gard. Edinburgh 13: 282 (1922)
Distribution: SE-Tibet; Bhutan; NE-India (Arunachal Pradesh)
36 TIB 40 BHU IND
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Irrorata
Synonyms: hidden
= Rhododendron epapillatum Balf.f. & Cooper; Notes Roy. Bot. Gard. Edinburgh 13: 257 (1922)
species :
Rhododendron papuanum
Becc.; Malesia 1: 201 (1878)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron parishii
C.B.Clarke; Hook.f. Fl. Brit. India [J. D. Hooker] 3: 475 (1882), et ex Lace & W. W. Sm., Notes Roy. Bot. Gard. Edinburgh 8: 213 (1914), descr. ampl.
Distribution: Myanmar (Kayin, Taninthayi)
41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Parishia
species :
Rhododendron parmulatum
Cowan; Notes Roy. Bot. Gard. Edinburgh 19(93): 182-183 (1936)
Distribution: SE-Tibet
36 TIB
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Neriiflora
species :
Rhododendron parryae
Hutch.; Gard. Chron., Ser. 3, 93: 387 (1933)
Distribution: NE-India (Assam)
40 IND
Remarks: provisionally accepted name
species :
Rhododendron parvifolium
Adams; Nouv. Mém. Soc. Imp. Naturalistes Moscou 9: 237 (1834)
Distribution: Siberia (Buryatia, Chita, Irkutsk, Tuva, Yakutia); Russian Far East (Amur, Khabarovsk, Magadan, Primorye, Sakhalin); NE-China (Jilin, Heilongjiang); Mongolia; North Korea; Japan
30 SIB 31 RFE 36 CHI 37 MON 38 JAP NKO
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Lapponica
Synonyms: hidden
= Azalea parvifolia (Adams) Kuntze; Revis. Gen. Pl. 2: 386 (1891)
= Rhododendron lapponicum subsp. alpinum (Glehn) A.P.Khokhr.; Sosud. Rast. Sovet. Dal´nego Vostoka 5: 133 (1991)
= Rhododendron lapponicum subsp. parvifolium (Adams) T.Yamaz.; Revis. Gen. Rhododendron Japan, Taiwan, Korea & Sakhalin 18 (1996)
= Rhododendron lapponicum var. alpinum (Glehn) T.Yamaz.; Revis. Gen. Rhododendron Japan, Taiwan, Korea & Sakhalin 19 (1996)
= Rhododendron lapponicum var. parvifolium (Adams) Herder; Trudy Imp. S.-Peterburgsk. Bot. Sada 1: 343 (1872)
= Rhododendron palustre Turcz. ex DC.; Prodr. [A. P. de Candolle] 7: 724 (1839)
= Rhododendron parvifolium f. albiflorum Herder ex Maxim.; Mém. Acad. Imp. Sci. St.- Petersbourg, Ser. 7, 16(9): 17 (1870)
= Rhododendron parvifolium f. alpinum Glehn; Trudy Imp. S.-Peterburgsk. Bot. Sada 4: 66 (1876)
= Rhododendron parvifolium var. alpinum (Glehn) N.Busch; Fl. Sibir. Orient. Extremi 2: 22 (1915)
species :
Rhododendron parvulum
Sleumer; Reinwardtia 5: 139 (1960)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron pauciflorum
King & Gamble; J. Asiat. Soc. Bengal, Pt. 2, Nat. Hist. 74(2): 75 (1906)
Distribution: peninsular Malaysia (Perak, Pahang, Selangor)
42 MLY
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron calocodon Ridl.; J. Fed. Malay States Mus. 5: 38 (1914)
= Rhododendron elegans Ridl.; J. Linn. Soc., Bot. 38: 314 (1908)
= Rhododendron pauciflorum var. calocodon (Ridl.) Sleumer; Reinwardtia 5: 156 (1960)
species :
Rhododendron pemakoense
Kingdon-Ward; Gard. Chron., Ser. 3, 88: 298 (1930)
Distribution: SE-Tibet; ?NE-India (?Arunachal Pradesh)
36 TIB
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Uniflora
Synonyms: hidden
= Rhododendron patulum Kingdon-Ward; Gard. Chron., Ser. 3, 88: 299 (1930)
species :
Rhododendron pendulum
Hook.f.; Rhod. Sikkim.-Himal. t. 13 (1851)
Distribution: S-Tibet; Nepal; Bhutan; N-India (Chumbi, Sikkim)
36 TIB 40 BHU IND NEP
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Edgeworthia
Synonyms: hidden
= Azalea pendula (Hook.f.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron modestum Hook.f.; Bot. Mag. 125: t. 7686 (1899)
species :
Rhododendron pennivenium
Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 55 (1920)
Distribution: China (W-Yunnan); NE-Myanmar; Vietnam
36 CHI 41 MYA VIE
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Irrorata
Synonyms: hidden
= Rhododendron tanastylum var. pennivenium (Balf.f. & Forrest) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 36(1): 117 (1978)
= Rhododendron ×agastum var. pennivenium (Balf.f. & Forrest) T.L.Ming; Acta Bot. Yunnan. 6(2): 152-153 (1984)
species :
Rhododendron pentandrum
(Maxim.) Craven; Blumea 56(1): 34 (2011)
Distribution: Russian Far East (Kuril Isl., Sakhalin); Japan (Hokkaido, Honshu, Shikoku, Kyushu)
31 RFE 38 JAP
Synonyms: hidden
= Menziesia pentandra Maxim.; Bull. Acad. Imp. Sci. Saint-Pétersbourg, Sér. 3, 11: 431 (1867)
species :
Rhododendron pentaphyllum
Maxim.; Bull. Acad. Petersb. 31: 64 (1887)
Distribution: Japan (Kyushu)
38 JAP
Remarks: Subgen. Pentanthera, Sect. Sciadorhodion
Synonyms: hidden
= Azalea pentaphylla (Maxim.) H.F.Copel.; Amer. Midl. Naturalist 30: 595 (1943)
= Rhododendron pentaphyllum f. albiflorum Asai & Torii; J. Jap. Bot. 40: 318 (1965)
= Rhododendron pentaphyllum var. villosum Koidz.; Acta Phytotax. Geobot. 1: 20 (1886)
= Rhododendron quinquefolium var. roseum Rehder; Stand. Cycl. Hort. 5: 2947 (1916)
variant :
var. nikoense
Komatsu; Matsum., Icon. Pl. Koisikav. 4: 45, t. 168 (1916)
Distribution: Japan (Honshu)
38 JAP
Synonyms: hidden
= Rhododendron nikoense (Komatsu) Nakai; Nakai & Koidz. Trees & Shrubs Japan Proper, ed. 1, 68 (1922)
variant :
var. shikokianum
T.Yamaz.; J. Jap. Bot. 63(9): 312 (1988)
Distribution: Japan (Honshu, Shikoku)
38 JAP
species :
Rhododendron perakense
King & Gamble; J. Asiat. Soc. Bengal, Pt. 2, Nat. Hist. 74: 76 (1905)
Distribution: peninsular Malaysia (Cameron Highlands, Pahang)
42 MLY
Remarks: Subgen. Rhododendron
species :
Rhododendron periclymenoides
(Michx.) Shinners; Castanea 27: 95 (1962)
Name: Pink azalea, Pinxter Flower
Distribution: USA (Alabama, Connecticut, District of Columbia, Delaware, Georgia, Illinois, Kentucky, Massachusetts, Maryland, North Carolina, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, South Carolina, Tennessee, Virginia, Vermont, West Virginia)
74 USA 75 USA 78 USA
Remarks: Subgen. Pentanthera, Sect. Pentanthera
Synonyms: hidden
= Anthodendron nudiflorum Rchb.; Mössler, Handb. Gewächsk. ed. 2, 1: 309 (1827), nom. superfl.
= Azalea fulva Michx. ex Lam.; J. Hist. Nat. 1: 410 (1792)
= Azalea lutea L.; Sp. Pl. [Linnaeus] 150 (1753)
= Azalea nudiflora L.; Sp. Pl. ed. 2 [Linnaeus] 214 (1762), nom. superfl.
= Azalea nudiflora var. alba Aiton; Hort. Kew. 1: 203 (1789)
= Azalea nudiflora var. carnea Aiton; Hort. Kew. 1: 203 (1789)
= Azalea nudiflora var. carnea C.F.Ludw.; Neue Wilde Baumz. 6 (1783), nom. subnud.
= Azalea nudiflora var. crispa C.F.Ludw.; Neue Wilde Baumz. 7 (1783)
= Azalea nudiflora var. glandifera Porter; Bull. Torrey Bot. Club 27: 508 (1900)
= Azalea nudiflora var. mixta DC.; Prodr. [A. P. de Candolle] 7: 717 (1839)
= Azalea nudiflora var. partita Aiton; Hort. Kew. 1: 203 (1789)
= Azalea nudiflora var. periclymenoides (Michx.) Heynh.; Nomencl. Bot. Hort. 108 (1840)
= Azalea nudiflora var. polyandra (Pursh) DC.; Prodr. [A. P. de Candolle] 7: 717 (1839)
= Azalea nudiflora var. rubra C.F.Ludw.; Neue Wilde Baumz. 7 (1783)
= Azalea nudiflora var. rutilans Aiton; Hort. Kew. 1: 203 (1789)
= Azalea nudiflora var. variegata C.F.Ludw.; Neue Wilde Baumz. 6 (1783)
= Azalea periclymena Pers.; Syn. Pl. [Persoon] 1: 213 (1805)
= Azalea periclymenoides Michx.; Fl. Bor.-Amer. 1: 151 (1803)
= Azalea periclymenoides var. alba (Aiton) Pursh; Fl. Amer. Sept. 1: 152 (1813)
= Azalea periclymenoides var. carnea (Aiton) Pursh; Fl. Amer. Sept. 1: 152 (1813)
= Azalea periclymenoides var. partita (Aiton) Pursh; Fl. Amer. Sept. 1: 153 (1813)
= Azalea periclymenoides var. polyandra Pursh; Fl. Amer. Sept. 1: 152 (1813)
= Azalea periclymenoides var. rutilans (Aiton) Pursh; Fl. Amer. Sept. 1: 152 (1813)
= Azalea rubra Weston; Bot. Univ. 1: 16 (1770)
= Rhododendron nudiflorum (L.) Torr.; Fl. N. Middle United States 1: 424 (1824)
= Rhododendron nudiflorum f. album (Aiton) Rehder; Wils. & Rehd., Monogr. Azaleas 137 (1921)
= Rhododendron nudiflorum f. glandiferum (Porter) Fernald; Rhodora 43: 619 (1941)
= Rhododendron nudiflorum Torr.; Fl. N. Middle United States 1: 424 (1824), nom. superfl.
= Rhododendron nudiflorum var. bicolor Zabel; Handb. Laubholzben. [Beissner et al.] [Beissner et al.] 380 (1903)
= Rhododendron nudiflorum var. glandiferum (Porter) Rehder; Monogr. Azaleas [E. H. Wilson & A. Rehder] 138 (1921)
= Rhododendron nudiflorum var. papilionaceum Zabel; Handb. Laubholzben. [Beissner et al.] [Beissner et al.] 380 (1903)
= Rhododendron nudiflorum var. polyandrum (Pursh) G.Don; Gen. Hist. 3: 847 (1834)
= Rhododendron periclymenoides f. album (Aiton) C.F.Reed; Phytologia 63(5): 411 (1987)
= Rhododendron periclymenoides f. eglandulosum F.Seym.; Fl. New England 429 (1969)
= Rhododendron periclymenoides f. glandiferum (Porter) C.F.Reed; Phytologia 63(5): 411 (1987)
= Rhododendron periclymenoides f. glandiferum (Porter) Uttal; Sida 13(2): 169 (1988), isonym
species :
Rhododendron perplexum
Sleumer; Reinwardtia 5: 197 (1960)
Distribution: Sumatra
42 SUM
Remarks: Subgen. Rhododendron
species :
Rhododendron petrocharis
Diels; Repert. Spec. Nov. Regni Veg. 17: 196 (1921)
Distribution: China (NC-Sichuan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Moupinensia
species :
Rhododendron phaeochiton
F.Muell.; Trans. Roy. Soc. Vict. N. S. 1(2): 23 (1889)
Distribution: New Guinea (Irian Jaya, Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron phaeochristum
Sleumer; Blumea 12: 95 (1963)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron phaeochrysum
Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 10(47-48): 131-132 (1917)
Distribution: China (W-Sichuan, NW-Yunnan); SE-Tibet
36 CHI TIB
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Taliensia
Synonyms: hidden
= Rhododendron cuprescens Nitz.; Acta Horti Gothob. 26(6): 117-121, f. 1 (1963), et Rhododendrons (London), 1972: 57 (1972)
= Rhododendron dryophyllum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 11(52-53): 58-60 (1919)
variant :
var. agglutinatum
(Balf.f. & Forrest) Chamb.; Notes Roy. Bot. Gard. Edinburgh 36(1): 120 (1978)
Distribution: China (W-Sichuan, NW-Yunnan); SE-Tibet
36 CHI TIB
Synonyms: hidden
= Rhododendron agglutinatum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 12(57-58): 88-90 (1920)
= Rhododendron dumosulum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 41 (1920)
= Rhododendron lophophorum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 11(52-53): 95-96 (1919)
= Rhododendron syncollum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 11(52-53): 142-145 (1919)
variant :
var. levistratum
(Balf.f. & Forrest) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 36(1): 120 (1978)
Distribution: China (W-Sichuan, NW-Yunnan)
36 CHI
Synonyms: hidden
= Rhododendron aiolopeplum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(65): 226-227 (1922)
= Rhododendron dichropeplum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 40 (1920)
= Rhododendron helvolum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(65): 262-263 (1922)
= Rhododendron intortum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(65): 269-270 (1922)
= Rhododendron levistratum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 11(52-53): 88-90 (1919)
= Rhododendron sigillatum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(65): 294-295 (1922)
= Rhododendron theiophyllum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 61 (1920)
= Rhododendron vicinum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(65): 305-306 (1922)
species :
Rhododendron phaeops
Sleumer; Reinwardtia 5: 90 (1960)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron piercei
Davidian; Quart. Bull. Amer. Rhododendron Soc. 30: 211 (1976)
Distribution: SE-Tibet
36 TIB
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Neriiflora
Synonyms: hidden
= Rhododendron beanianum var. compactum Cowan; Notes Roy. Bot. Gard. Edinburgh 21(3): 148 (1953)
species :
Rhododendron pilostylum
W.K.Hu; Bull. Bot. Res., Harbin 8(3): 49-51, f. 1 (1988)
Distribution: China (SE-Yunnan)
36 CHI
species :
Rhododendron pilosum
(Michx. ex Lam.) Craven; Blumea 56: 34 (2011)
Name: Minniebush
Distribution: USA (Georgia, Maryland, North Carolina, Pennsylvania, South Carolina, Tennessee, Virginia, West Virginia)
75 USA 78 USA
Synonyms: hidden
= Azalea pilosa Michx.; Lam. J. Nat. Hist. 1: 410 (1792)
= Candollea azaleoides Baumg.; Cat. Hort. Bollw. (1810)
= Menziesia ferruginea var. globularis A.Gray; Manual [Gray], ed. 2: 256 (1856)
= Menziesia globularis Salisb.; Parad. Lond. 1(2): t. 44 (1806), nom. illeg. nom. superfl.
= Menziesia pilosa (Michx. ex Lam.) Juss.; Ann. Mus. Natl. Hist. Nat. 1: 56 (1802)
= Menziesia smithii Michx.; Fl. Bor. Amer. 1: 235 (1803)
species :
Rhododendron pinetorum
P.C.Tam; Bull. Bot. Res., Harbin 2(1): 93 (1982)
Distribution: China (Hunan)
36 CHI
species :
Rhododendron pingbianense
M.Y.Fang; Acta Phytotax. Sin. 22(5): 421-422, f. 2 (1984)
Distribution: China (SE-Yunnan)
36 CHI
species :
Rhododendron pingianum
D.Fang; Contr. Biol. Lab. Chin. Assoc. Advancem. Sci., Sect. Bot. 12: 20 (1939)
Distribution: China (SW-Sichuan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Argyrophylla
species :
Rhododendron platyphyllum
(Franch. ex Diels) Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 9: 259 (1916)
Distribution: China (W-Yunnan)
36 CHI
Synonyms: hidden
= Rhododendron cephalanthum subsp. platyphyllum (Franch. ex Diels) Cullen; Notes Roy. Bot. Gard. Edinburgh 37: 327 (1979)
= Rhododendron cephalanthum var. platyphyllum Franch. ex Diels; Notes Roy. Bot. Gard. Edinburgh 7: 211, 392 (1912)
species :
Rhododendron platypodum
Diels; Bot. Jahrb. Syst. 29(3-4): 511-512 (1900) et ex Tagg, in Notes Bot. Gard. Edinb. 16: 204 (1931), descr. ampl.
Distribution: China (Chongqing, Guangxi)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Fortunea
Synonyms: hidden
= Rhododendron yuefengense G.Z.Li; Guihaia 15(4): 293-294, f. 1 (1995)
species :
Rhododendron pleianthum
Sleumer; Reinwardtia 5: 122 (1960)
Distribution: New Guinea (Irian Jaya, Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron pleistanthum
E.H.Wilson; Rhododendrons Names Addresses 73 (1923)
Distribution: China (Yunnan, Sichuan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Triflora
species :
Rhododendron pocophorum
Balf.f. ex Tagg; Notes Roy. Bot. Gard. Edinburgh 15: 316 (1926)
Distribution: China (NW-Yunnan); SE-Tibet; NE-India (Arunachal Pradesh)
36 CHI TIB 40 IND
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Neriiflora
variant :
var. hemidartum
(Balf.f. ex Tagg) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 37(2): 334 (1979)
Distribution: China (NW-Yunnan); SE-Tibet
36 CHI TIB
Synonyms: hidden
= Rhododendron hemidartum Balf.f. ex Tagg; Notes Roy. Bot. Gard. Edinburgh 15(75): 314 (1927)
species :
Rhododendron pogonophyllum
Cowan & Davidian; R. H. S. Rhododendron Year Book, 75 (1947), in adnot. (1947)
Distribution: Bhutan
40 BHU
Remarks: Subgen. Rhododendron, Sect. Pogonanthum
species :
Rhododendron poluninii
Davidian; Rhododendron Species, 2 (Ser. Arboreum-Lacteum): 307, 155 (1989)
Distribution: Bhutan
40 BHU
species :
Rhododendron polyanthemum
Sleumer; Blumea 12: 111 (1963)
Distribution: Borneo (Sabah)
42 BOR
Remarks: Subgen. Rhododendron
species :
Rhododendron polycladum
Franch.; Bull. Soc. Bot- Fr. 33: 234 (1886)
Distribution: China (NW-Yunnan, C-Yunnan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Lapponica
Synonyms: hidden
= Azalea polyclada (Franch.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron compactum Hutch.; Gard. Chron., Ser. 3, 91: 326 (1932)
= Rhododendron scintillans Balf.f. & W.W.Sm.; Notes Bot. Gard. Edinb. 9: 271 (1916)
species :
Rhododendron polylepis
Franch.; Bull. Soc. Bot- Fr. 33: 232 (1886); et in Nouv. Arch. Mus. Paris Ser. 2(10): 50 (1887 publ. 1888)
Distribution: China (S-Shaanxi, S-Gansu, N-Sichuan, SW-Sichuan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Triflora
Synonyms: hidden
= Rhododendron harrovianum Hemsl.; Gard. Chron. 47: 4 (1910)
species :
Rhododendron polytrichum
W.P.Fang; Acta Phytotax. Sin. 21(4): 459, f. 4 (1983)
Distribution: China (SW-Hunan, NE-Guangxi)
36 CHI
species :
Rhododendron pomense
Cowan & Davidian; Notes Roy. Bot. Gard. Edinburgh 21(3): 146-147 (1953)
Distribution: SE-Tibet
36 TIB
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Taliensia
species :
Rhododendron ponticum
L.; Sp. Pl., ed. 2 [Linnaeus] 562 (1762)
subspecies :
subsp. ponticum
Name: Pontische Alpenrose (DE)
Distribution: England [I]; Ireland [I]; Belgium [I]; Germany [I]; France [I]; Channel Isl. [I]; Bulgaria; European Turkey; Madeira [I] (Madeira Isl. [I]); Northern Caucasus; Georgia [Caucasus]; Turkey (N-Anatolia, NE-Anatolia, NW-Anatolia: Bithynia); Lebanon (C-Lebanon); New Zealand [I]
10 grb ire 11 bgm ger 12 cis fra 13 BUL TUE 21 mdr 33 GEO NCS 34 LEB TUR 51 nzl
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Pontica
Synonyms: hidden
= Anthodendron ponticum (L.) Rchb.; Fl. Germ. Excurs. 416 (1831)
= Azalea arborea L.; Sp. Pl. [Linnaeus] 150 (1753)
= Azalea lancifolia (Moench) Kuntze; Revis. Gen. Pl. 2: 386 (1891)
= Azalea pontica L.; Sp. Pl. [Linnaeus] 150 (1753)
= Hymenanthes pontica (L.) H.F.Copel.; Amer. Midl. Naturalist 30: 614 (1943)
= Rhododendron adansonii E.-A.Baumann; Ann. Fl. Pomone 1838-1839: 304 (1839)
= Rhododendron catesbaei J.Forbes; Hort. Woburn. 90 (1833), orth. var.
= Rhododendron catesbaeum Dum.Cours.; Bot. Cult., ed. 2, 7: 165 (1814)
= Rhododendron deciduum Andrews ex Steud.; Nomencl. Bot. [Steudel], ed. 2, 2: 450 (1841), nom. inval.
= Rhododendron hyacinthiflorum Steud.; Nomencl. Bot. [Steudel], ed. 2, 2: 450 (1841), nom. inval.
= Rhododendron lancifolium Moench; Meth. 45 (1794), nom. illeg.
= Rhododendron lowei Loudon; Gard. Mag. & Reg. Rural Domest. Improv. 11: 79, 190 (1835)
= Rhododendron obtusum P.Watson; Dendrol. Brit. 2: t. 162 (1823-1825)
= Rhododendron odoratum Lodd. ex Steud.; Nomencl. Bot. [Steudel], ed. 2, 2: 450 (1841), nom. inval. pro syn. of R. ponticum L.
= Rhododendron ponticum f. album (Sweet) Zabel; Handb. Laubholzben. [Beissner et al.] [Beissner et al.] 377 (1903)
= Rhododendron ponticum f. angustilobum Rukhadze & Pachulia; Trudy Sukhumsk. Bot. Sada 11: 465 (1958), no type citation.
= Rhododendron ponticum f. aurantiacomaculatum Rukhadze & Pachulia; Trudy Sukhumsk. Bot. Sada 11: 465 (1958), no type citation.
= Rhododendron ponticum f. brachystamineum Rukhadze & Pachulia; Trudy Sukhumsk. Bot. Sada 11: 464 (1958), no type citation.
= Rhododendron ponticum f. crispatum Rukhadze & Pachulia; Trudy Sukhumsk. Bot. Sada 11: 465 (1958), no type citation.
= Rhododendron ponticum f. luteomaculatum Rukhadze & Pachulia; Trudy Sukhumsk. Bot. Sada 11: 464 (1958), no type citation.
= Rhododendron ponticum f. parviflorum Rukhadze & Pachulia; Trudy Sukhumsk. Bot. Sada 11: 465 (1958), no type citation.
= Rhododendron ponticum f. roseum (Sweet) Rehder; Bibliogr. Cult. Trees 505 (1949)
= Rhododendron ponticum var. album Sweet; Hort. Brit. 264 (1826)
= Rhododendron ponticum var. brachycarpum Boiss.; Fl. Orient. [Boissier] 3: 971 (1875)
= Rhododendron ponticum var. obtusum (P.Watson) G.Don; Gen. Hist. 3: 843 (1834)
= Rhododendron ponticum var. parviflorum Cels ex Dum.Cours.; Bot. Cult. 2: 253 (1802)
= Rhododendron ponticum var. roseum Sweet; Hort. Brit. 264 (1826)
= Rhododendron speciosum Salisb.; Prodr. Stirp. Chap. Allerton 287 (1796), nom. superfl.
variant :
var. heterophyllum
Ansin; Turkish J Agric. Forest. 18: 139 (1994)
Distribution: Turkey
34 TUR
subspecies :
subsp. baeticum
(Boiss. & Reut.) Hand.-Mazz.; Ann. Naturhist. Mus. Wien 23: 53 (1909)
Distribution: C- & S-Portugal; S-Spain (Cadiz)
12 POR SPA
Synonyms: hidden
= Azalea baetica (Boiss. & Reut.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron algarvense Page; Page´s Prodr. 38 (1818)
= Rhododendron baeticum Boiss. & Reut.; Diagn. Pl. Orient., Ser. 2, 3: 118 (1856)
= Rhododendron myrtifolium G.Lodd. ex Bosse; Vollst. Handb. Bl.-gärtn. 908 (1829)
= Rhododendron ponticum var. angustifolium Millet; Mém. Soc. Agric. Angers 3: 92 (1835)
= Rhododendron ponticum var. baeticum (Boiss. & Reut.) Pérez Lara; Anales Soc. Esp. Hist. Nat. 18: 51 (1889)
= Rhododendron ponticum var. myrtifolium (G.Lodd. ex Bosse) G.Don; Gen. Hist. 3: 843 (1834)
species :
Rhododendron populare
Cowan; Notes Roy. Bot. Gard. Edinburgh 19(94): 251-252 (1937)
Distribution: S-Tibet
36 TIB
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Thomsonia
species :
Rhododendron poremense
J.J.Sm.; Bot. Jahrb. Syst. 68: 203 (1937)
Distribution: SE-Sulawesi
42 SUL
Remarks: Subgen. Rhododendron
species :
Rhododendron porphyranthes
Sleumer; Blumea 12: 108 (1963)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron potaninii
Batalin; Trudy Imp. S.-Peterburgsk. Bot. Sada 11(2): 489-490. 1892 (1891)
Distribution: China (E-Gansu)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. unknown
species :
Rhododendron praestans
Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 9(44-45): 263-264 (1916)
Distribution: China (NW-Yunnan); SE-Tibet; Myanmar (Kachin)
36 CHI TIB 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Grandia
Synonyms: hidden
= Rhododendron coryphaeum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 9(57-58): 100-101 (1920)
= Rhododendron semnum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 59-60 (1920)
species :
Rhododendron praeteritum
Hutch.; Gard. Chron., Ser. 3, 71: 149 (1922)
Distribution: China (W-Hubei, W-Gansu, E-Qinghai)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Fortunea
variant :
var. hirsutum
W.K.Hu; Bull. Bot. Res., Harbin 8(3): 58, pl. 10 (1988)
Distribution: China (SW-Hunan, W-Hubei)
36 CHI
species :
Rhododendron praetervisum
Sleumer; Blumea 21(2): 376 (1973)
Distribution: Borneo (Sabah)
42 BOR
species :
Rhododendron praevernum
Hutch.; Gard. Chron., Ser. 3, 67: 127 (1920)
Distribution: China (Guizhou, W-Hubei, Shaanxi, Sichuan, NE-Yunnan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Fortunea
species :
Rhododendron prainianum
Koord.; Nova Guinea 8: 187 (1909)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron prattii
Franch.; J. Bot. [Morot] 9(21): 389-390 (1895)
Distribution: China (W-Sichuan)
36 CHI
Synonyms: hidden
= Rhododendron faberi subsp. prattii (Franch.) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 36(1): 120 (1978)
= Rhododendron leei W.P.Fang; Acta Phytotax. Sin. 2(1): 82, pl. 8 (1952)
species :
Rhododendron preptum
Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 12(57-58): 149-151 (1920)
Distribution: China (SW-Yunnan); NE-Myanmar (Kachin)
36 CHI 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Falconera. Status doubtful, possibly a hybrid of R. arizelum or coriaceum
species :
Rhododendron primuliflorum
Bureau & Franch.; J. Bot. [Morot] 5: 95 (1891)
Distribution: China (S-Gansu, W-Sichuan, NW-Yunnan); SE-Tibet
36 CHI TIB
Remarks: Subgen. Rhododendron, Sect. Pogonanthum
Synonyms: hidden
= Rhododendron acraium Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 9: 209 (1916)
= Rhododendron clivicola Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 9: 221 (1916)
= Rhododendron cremnophilum Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 9: 223 (1916)
= Rhododendron gymnomiscum Balf.f. & Kingdon-Ward; Notes Roy. Bot. Gard. Edinburgh 9: 230 (1916)
= Rhododendron praeclarum Balf.f. & Farrer; Notes Roy. Bot. Gard. Edinburgh 9: 261 (1916)
= Rhododendron tsarongense Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 11: 150 (1919)
variant :
var. cephalanthoides
(Balf. & W.W.Sm.) Cowan & Davidian; Rhodod. Yearbook 2: 79 (1947)
Distribution: China (W-Sichuan, N-Yunnan, NW-Yunnan); SE-Tibet
36 CHI TIB
Synonyms: hidden
= Rhododendron cephalanthoides Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 9: 216 (1916)
variant :
var. lepidanthum
(Balf. & W.W.Sm.) Cowan & Davidian; Rhodod. Yearbook 2: 79 (1947)
Distribution: China (SW-Sichuan, NW-Yunnan)
36 CHI
Synonyms: hidden
= Rhododendron lepidanthum Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 9: 245 (1916)
species :
Rhododendron principis
Bureau & Franch.; J. Bot. [Morot] 5(6): 93-94, t. 1 (1891)
Distribution: S-Tibet
36 TIB
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Taliensia
species :
Rhododendron proliferum
Sleumer; Blumea 12: 101 (1963)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron pronum
Tagg & Forrest; Notes Roy. Bot. Gard. Edinburgh 15(75): 318-319 (1927)
Distribution: China (W-Yunnan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Taliensia
species :
Rhododendron protandrum
Sleumer; Blumea 11: 114 (1961)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron proteoides
Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 9(44-45): 264-266 (1916)
Distribution: China (SW-Sichuan, NW-Yunnan); SE-Tibet
36 CHI TIB
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Taliensia
Synonyms: hidden
= Rhododendron lampropeplum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(65): 272-273 (1922)
species :
Rhododendron protistum
Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 12(57-58): 151-152 (1920)
Distribution: China (W-Yunnan); SE-Tibet; NE-India (Arunachal Pradesh); NE-Myanmar (Kachin)
36 CHI TIB 40 IND 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Grandia
Synonyms: hidden
= Rhododendron giganteum var. seminudum Tagg & Forrest; Notes Roy. Bot. Gard. Edinburgh 15(72): 108-109 (1926)
variant :
var. giganteum
(Forrest ex Tagg) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 37(2): 331 (1979)
Distribution: China (W-Yunnan)
36 CHI
Synonyms: hidden
= Rhododendron giganteum Forrest; J. Roy. Hort. Soc. 49: 27 (1924), et ex Tagg, Notes Roy. Bot. Gard. Edinburgh 15(72): 106-109 (1926)
species :
Rhododendron pruniflorum
Hutch. & Kingdon-Ward;; Hutch. in Notes Bot. Gard. Edinb. 16: 174 (1931), latine
Distribution: SE-Tibet; NE-India (Arunachal Pradesh); NE-Myanmar (Kachin)
36 TIB 40 IND 41 MYA
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Glauca
Synonyms: hidden
= Rhododendron sordidum Hutch.; Rhododendron Soc. Notes 3(5): 286 (1929-1931 publ. 1932)
= Rhododendron tsangpoense var. pruniflorum (Hutch. & Kingdon-Ward) Cowan & Davidian; Rhododendron Year Book 3: 90 (1948)
species :
Rhododendron prunifolium
(Small) Millais; Rhododendrons, 230 (1917)
Name: Plumleaf azalea
Distribution: USA (Alabama, Georgia)
78 USA
Remarks: Subgen. Pentanthera, Sect. Pentanthera
Synonyms: hidden
= Azalea prunifolia Small; Fl. S.E. U.S. [Small] ed. 2, 1356 (1913)
species :
Rhododendron przewalskii
Maxim.; Bull. Acad. Petersb. 23: 350 (1877)
subspecies :
subsp. przewalskii
Distribution: China (SW-Gansu, E-Qinghai, S-Qinghai, N-Sichuan, W-Sichuan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Taliensia
Synonyms: hidden
= Azalea przewalskii (Maxim.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron dabanshanense W.P.Fang ex S.X.Wang; Acta Bot. Sin. 20: 358 (1978)
= Rhododendron kialense Franch.; J. Bot. [Morot] 9(21): 392-393 (1895)
subspecies :
subsp. chrysophyllum
W.P.Fang & S.X.Wang; Acta Biol. Plateau Sin. 1: 227-228, f. 4 (1982)
Distribution: China (E-Qinghai)
36 CHI
subspecies :
subsp. huzhuense
W.P.Fang & S.X.Wang; Acta Biol. Plateau Sin. 1: 228, f. 5 (1982)
Distribution: China (E-Qinghai)
36 CHI
subspecies :
subsp. yushuense
W.P.Fang & S.X.Wang; Acta Biol. Plateau Sin. 3: 1-6, f. 1 (1984)
Distribution: China (SW-Qinghai)
36 CHI
species :
Rhododendron pseudobuxifolium
Sleumer; Reinwardtia 5: 154 (1960)
Distribution: SW-Sulawesi
42 SUL
Remarks: Subgen. Rhododendron
species :
Rhododendron pseudochrysanthum
Hayata; J. Coll. Sci. Imp. Univ. Tokyo 25: Art. 19, 154 (1908)
Distribution: Taiwan
38 TAI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Maculifera
Synonyms: hidden
= Rhododendron nankotaisanense Hayata; Icon. Pl. Formosan. 9: 66 (1920)
= Rhododendron pseudochrysanthum var. nankotaisanense (Hayata) T.Yamaz.; J. Jap. Bot. 56(11): 366 (1981)
species :
Rhododendron pseudociliipes
Cullen; Notes Roy. Bot. Gard. Edinburgh 36(1): 122 (1978)
Distribution: China (NW-Yunnan); NE-Myanmar (Kachin)
36 CHI 41 MYA
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Maddenia
species :
Rhododendron pseudomaddenii
A.A.Mao & Bhaumik; Edinburgh J. Bot. 72(2): 210 (2015)
Distribution: NE-India (Arunachal Pradesh)
40 IND
species :
Rhododendron pseudotrichanthum
Sleumer; Blumea 12: 340 (1964)
Distribution: EC-Borneo
42 BOR
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron trichanthum Sleumer; Reinwardtia 5: 127 (1960), non Rehder
species :
Rhododendron psilanthum
Sleumer; Reinwardtia 5: 81 (1960)
Distribution: SW-Sulawesi
42 SUL
Remarks: Subgen. Rhododendron
species :
Rhododendron pubescens
Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 12: 153 (1920)
Distribution: China (SW-Sichuan, N-Yunnan, C-Yunnan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Scabrifolia
species :
Rhododendron pubicostatum
T.L.Ming; Acta Bot. Yunnan. 3(1): 119-121, f. 3, 1-5 (1981)
Distribution: China (NE-Yunnan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Taliensia
species :
Rhododendron pubigermen
J.J.Sm.; Contr. Arnold Arbor. 8: 122 (1934)
Distribution: Sumatra
42 SUM
Remarks: Subgen. Rhododendron
species :
Rhododendron pudiense
Xiang Chen & Jia Y.Huang; Ann. Bot. Fenn. 47(5): 398 (2010)
Distribution: China (Guizhou)
36 CHI
species :
Rhododendron pudingense
X.Y.Dai, C.H.Yang & Y.P.Ma; PhytoKeys 146: 54 (2020)
Distribution: China (Guizhou)
36 CHI
species :
Rhododendron pudorinum
Sleumer; Reinwardtia 5: 112 (1960)
Distribution: SW-Sulawesi
42 SUL
Remarks: Subgen. Rhododendron
species :
Rhododendron pudorosum
Cowan; Notes Roy. Bot. Gard. Edinburgh 19(94): 239-240 (1937)
Distribution: S-Tibet; NE-India (Arunachal Pradesh)
36 TIB 40 IND
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Grandia
species :
Rhododendron pugeense
L.C.Hu; Acta Phytotax. Sin. 30(6): 543-545, f. 2 (1992)
Distribution: China (SW-Sichuan)
36 CHI
species :
Rhododendron pulchroides
Chun & W.P.Fang; Acta Phytotax. Sin. 6(2): 171-172, pl. 42, f. 1 (1957)
Distribution: China (N-Guangxi)
36 CHI
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
species :
Rhododendron pulleanum
Koord.; Nova Guinea 8: 879 (1912)
Distribution: New Guinea (Irian Jaya, Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
variant :
var. maiusculum
Sleumer; Reinwardtia 5: 56 (1960)
Distribution: New Guinea (Irian Jaya, Papua New Guinea)
42 NWG
species :
Rhododendron pumilum
Hook.f.; Rhod. Sikkim-Himal. t. 14 (1851)
Distribution: China (NW-Yunnan); SE-Tibet; Nepal; Bhutan; N-India (Sikkim, Arunachal Pradesh); Myanmar
36 CHI TIB 40 BHU IND NEP 41 MYA
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Uniflora
Synonyms: hidden
= Azalea pumila (Hook.f.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
species :
Rhododendron punctifolium
L.C.Hu; Acta Phytotax. Sin. 22(4): 316-317, f. 1 (1984)
Distribution: China (W-Yunnan)
36 CHI
species :
Rhododendron purdomii
Rehder & E.H.Wilson; Pl. Wilson. [Sargent] 1: 538-539 (1913)
Distribution: China (S-Gansu, W-Henan, S-Shaanxi)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. unknown
variant :
var. villosum
L.H.Wu; J Wuhan Bot. Res. 17(1): 21 (1999)
Distribution: China (Hunan)
36 CHI
species :
Rhododendron purpureiflorum
J.J.Sm.; Meded. Herb. Leid. No. 25, 3 (1915)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron podocarpoides Schltr.; Bot. Jahrb. Syst. 55: 149 (1918)
species :
Rhododendron pusillum
J.J.Sm.; Meded. Herb. Leid. No. 25, 1 (1915)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron candidapiculatum Wernham; Trans. Linn. Soc. London, Bot. 9: 96 (1916)
species :
Rhododendron pyrrhophorum
Sleumer; Reinwardtia 5: 165 (1960)
Distribution: N-Sumatra
42 SUM
Remarks: Subgen. Rhododendron
species :
Rhododendron qianyangense
M.Y.He; Bull. Bot. Res., Harbin 5(4): 115-116 (1985)
Distribution: China (W-Hunan)
36 CHI
species :
Rhododendron qiaojiaense
L.M.Gao & D.Z.Li; Ann. Bot. Fenn. 46(1): 67 (2009)
Distribution: China (Yunnan)
36 CHI
species :
Rhododendron qinghaiense
Ching ex W.Y.Wang; Acta Phytotax. Sin. 20(1): 56 (1982)
Distribution: China (S-Qinghai)
36 CHI
species :
Rhododendron quadrasianum
S.Vidal; Rev. Pl. Vasc. Filip. 170 (1886)
Distribution: Philippines (Luzon)
42 PHI
Remarks: Subgen. Rhododendron
variant :
var. davaoense
(H.F.Copel.) Sleumer; Reinwardtia 5: 65 (1960)
Distribution: Philippines (Luzon, Leyte, Negros, Mindanao)
42 PHI
Synonyms: hidden
= Rhododendron quadrasianum f. davaoense H.F.Copel.; Philipp. J. Sci. 40: 143 (1929)
= Rhododendron quadrasianum f. negrosense H.F.Copel.; Philipp. J. Sci. 40: 142 (1929)
variant :
var. intermedium
Merr.; Philipp. J. Sci., C 3: 382 (1908)
Distribution: Philippines (Luzon)
42 PHI
variant :
var. malindangense
(Merr.) H.F.Copel.; Philipp. J. Sci. 40: 142 (1929)
Distribution: Philippines (Camiguin, Mindanao)
42 PHI
Synonyms: hidden
= Rhododendron malindangense Merr.; Philipp. J. Sci. 3: 256 (1908)
variant :
var. marivelesense
(H.F.Copel.) Sleumer; Reinwardtia 5: 66 (1960)
Distribution: Philippines (Luzon, Mindoro, Leyte)
42 PHI
Synonyms: hidden
= Rhododendron quadrasianum f. marivelesense H.F.Copel.; Philipp. J. Sci. 40: 141 (1929)
variant :
var. rosmarinifolium
(S.Vidal) H.F.Copel.; Philipp. J. Sci. 40: 144 (1929)
Distribution: Philippines (Luzon, Mindoro, Biliran, Negros)
42 PHI
Synonyms: hidden
= Rhododendron quadrasianum f. banahaoense H.F.Copel.; Philipp. J. Sci. 40: 145 (1929)
= Rhododendron quadrasianum f. halconense H.F.Copel.; Philipp. J. Sci. 40: 141 (1929)
= Rhododendron quadrasianum f. pulogense H.F.Copel.; Philipp. J. Sci. 40: 144 (1929)
= Rhododendron rosmarinifolium S.Vidal; Revis. Pl. Vasc. Filip. 172 (1886)
variant :
var. selebicum
J.J.Sm.; Bull. Jard. Bot. Buitenzorg Sér. 3, 13: 443 (1935)
Distribution: Sulawesi
42 SUL
species :
Rhododendron quinquefolium
Bisset & S.Moore; J. Bot. 15: 292 (1877)
Distribution: Japan (Honshu, Shikoku)
38 JAP
Remarks: Subgen. Pentanthera, Sect. Sciadorhodion
Synonyms: hidden
= Rhododendron quinquefolium f. speciosum N.Yonez.; J. Phytogeogr. Taxon. 35: 101 (1987)
species :
Rhododendron racemosum
Franch.; Bull. Soc. Bot. France 33: 235 (1886)
Distribution: China (NW-Guizhou, SW-Sichuan, Yunnan)
36 CHI
Synonyms: hidden
= Rhododendron crenatum H.Lév.; Bull. Acad. Int. Géogr. Bot. 25: 20 (1915)
= Rhododendron motsouense H.Lév.; Repert. Spec. Nov. Regni Veg. 13: 148 (1914) (motsonense)
species :
Rhododendron radendum
W.P.Fang; Contr. Biol. Lab. Sci. Soc. China, Bot. Ser. 12: 62 (1939)
Distribution: China (W-Sichuan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Pogonanthum
species :
Rhododendron radians
J.J.Sm.; Bull. Jard. Bot. Buitenz., Ser. 3, 1: 403 (1920)
Distribution: C-Sulawesi
42 SUL
Remarks: Subgen. Rhododendron
variant :
var. dissilistellatum
(Craven) Argent; Rhododendrons subgen. Vireya, ed. 2. 200 (2015)
Distribution: Sulawesi
42 SUL
Synonyms: hidden
= Rhododendron dissilistellatum Craven; J. Adelaide Bot. Gard. 27(4): 33 (2014)
variant :
var. minahasae
Sleumer; Reinwardtia 5: 130 (1960)
Distribution: NE-Sulawesi
42 SUL
Synonyms: hidden
= Rhododendron minahasae (Sleumer) Craven; J. Adelaide Bot. Gard. 27(4): 34 (2014)
variant :
var. pubitubum
(Sleumer) Argent; Rhododendrons subgen. Vireya 170 (2006)
Distribution: C-Sulawesi
42 SUL
Synonyms: hidden
= Rhododendron pubitubum Sleumer; Reinwardtia 5: 126 (1960)
= Rhododendron amabile Sleumer; Reinwardtia 5: 127 (1960)
species :
Rhododendron ramipilosum
T.L.Ming; Acta Bot. Yunnan. 6(2): 159-160 (1984)
Distribution: SE-Tibet
36 TIB
species :
Rhododendron ramsdenianum
Cowan; Notes Roy. Bot. Gard. Edinburgh 19(93): 183-185 (1936)
Distribution: SE-Tibet
36 TIB
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Irrorata
species :
Rhododendron rappardii
Sleumer; Reinwardtia 5: 93 (1960)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron rarilepidotum
J.J.Sm.; Contr. Arnold Arbor. 8: 126 (1934)
Distribution: N-Sumatra
42 SUM
Remarks: Subgen. Rhododendron
species :
Rhododendron rarum
Schltr.; Bot. Jahrb. Syst. 55: 150 (1918)
Distribution: New Guinea (Irian Jaya, Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron rawatii
I.D.Rai & B.S.Adhikari; Phytotaxa 71: 12 (2012)
Distribution: NW-India (Uttarakhand)
40 IND
species :
Rhododendron recurvoides
Tagg & Kingdon-Ward; Year Book Rhododendron Assoc., 245, nomen; et in Rhododendron Soc. Notes, 1929-31 3: No. 5, 284 (1932), descr.; Tagg in Notes Bot. Gard. Edinb. 18: 218 (1934), latine (1931)
Distribution: Myanmar (Chin, Kachin, Sagaing)
41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Glischra
species :
Rhododendron redowskianum
Maxim.; Prim. Fl. Amur. 189 (1859)
Distribution: Siberia (Buryatia, Chita, Irkutsk, Yakutia); Russian Far East (Amur, Khabarovsk, Magadan, Primorye, Sakhalin); NE-China (SE-Jilin); North Korea; South Korea (Cheju Isl.)
30 SIB 31 RFE 36 CHI 38 KOR NKO
Synonyms: hidden
= Azalea redowskiana (Maxim.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron saisiuense Nakai; Bot. Mag. (Tokyo) 49: 587 (1935)
= Therorhodion redowskianum (Maxim.) Hutch.; Bull. Misc. Inform. Kew 1921: 204 (1921)
species :
Rhododendron renschianum
Sleumer; Bot. Jahrb. Syst. 71: 146 (1940)
Distribution: Lesser Sunda Isl. (Flores)
42 LSI
Remarks: Subgen. Rhododendron
species :
Rhododendron reticulatum
D.Don ex G.Don; Gen. Hist. 3: 846 (1834)
Distribution: Japan (Honshu, Shikoku, Kyushu)
38 JAP
Remarks: Subgen. Tsutsusi, Sect. Brachycalyx
Synonyms: hidden
= Azalea rhombica (Miq.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron reticulatum f. albiflorum (Makino) Makino; Ill. Fl. Nippon 253 (1940)
= Rhododendron reticulatum f. bifolium (T.Yamaz.) T.Yamaz.; Fl. Japan 3a: 37 (1993)
= Rhododendron reticulatum f. ciliatum (Nakai) Sugim.; New Keys Woody Pl. Jap. 509 (1972)
= Rhododendron reticulatum f. parvifolium (T.Yamaz.) T.Yamaz.; Fl. Japan 3a: 37 (1993)
= Rhododendron reticulatum f. trichostylum Mizush. ex Okuhara; J. Jap. Bot. 36: 93 (1961)
= Rhododendron reticulatum f. versicolor (Nakai) H.Hara; Enum. Spermatophytarum Japon. 1: 51 (1948)
= Rhododendron reticulatum subsp. ciliatum (Nakai) Minamit.; J. Jap. Bot. 93: 88 (2018)
= Rhododendron reticulatum var. bifolium T.Yamaz.; J. Jap. Bot. 62: 288 (1987)
= Rhododendron reticulatum var. ciliatum Nakai; Bot. Mag. (Tokyo) 40: 486 (1926)
= Rhododendron reticulatum var. hidekokubuanum Minamit.; J. Jap. Bot. 93: 99 (2018)
= Rhododendron reticulatum var. parvifolium T.Yamaz.; J. Jap. Bot. 59: 209 (1984)
= Rhododendron reticulatum var. shimanum Minamit. & K.Yamawaki; J. Jap. Bot. 93: 99 (2018)
= Rhododendron rhombicum Miq.; Ann. Mus. Bot. Lugduno-Batavi 2: 164 (1866)
= Rhododendron sakawanum Makino; J. Jap. Bot. 3: 11 (1926)
species :
Rhododendron retivenium
Sleumer; Reinwardtia 5: 222 (1960)
Distribution: Borneo
42 BOR
Remarks: Subgen. Rhododendron
species :
Rhododendron retrorsipilum
Sleumer; Blumea 11: 120 (1961)
Distribution: New Guinea (Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron retusum
(Blume) Benn.; Pl. Jav. Rar. 88. t. 20 (1823)
Distribution: Sumatra; Java; Lesser Sunda Isl. (Bali)
42 JAW LSI SUM
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Azalea retusa (Blume) Kuntze; Revis. Gen. Pl. 2: 386 (1891), isonym
= Azalea retusa Blume ex Steud.; Nomencl. Bot. [Steudel], ed. 2, 1: 175 (1840)
= Rhododendron retusum var. macranthum Hochr.; Candollea 2: 492 (1925)
= Vireya retusa Blume; Bijdr. Fl. Ned. Ind. 856 (1826)
variant :
var. trichostylum
Sleumer; Reinwardtia 5: 55 (1960)
Distribution: N-Sumatra
42 SUM
species :
Rhododendron revolutum
Sleumer; Reinwardtia 5: 74 (1960)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron rex
H.Lév.; Repert. Spec. Nov. Regni Veg. 13(368-369): 340 (1914)
subspecies :
subsp. rex
Distribution: China (SW-Sichuan, NE-Yunnan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Falconera
subspecies :
subsp. gratum
(T.L.Ming) M.Y.Fang; Fl. Reipubl. Popularis Sin. 57(2): 60 (1995)
Distribution: China (W-Yunnan)
36 CHI
Synonyms: hidden
= Rhododendron gratum T.L.Ming; Acta Bot. Yunnan. 3(1): 118, f. 2, 1-5 (1981)
species :
Rhododendron reynosoi
Argent; Gard. Bull. Singapore 56(1-2): 84 (2004)
Distribution: Palawan
42 PLW
species :
Rhododendron rhodanthum
M.Y.He; Bull. Bot. Res., Harbin 5(4): 116-118 (1985)
Distribution: China (S-Hunan)
36 CHI
species :
Rhododendron rhodochroum
Sleumer; Reinwardtia 5: 87 (1960)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron rhodoleucum
Sleumer; Blumea 11: 119 (1961)
Distribution: New Guinea (Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron rhodosalpinx
Sleumer; Blumea 11: 121 (1961)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron rhodostomum
Sleumer; Reinwardtia 5: 157 (1960)
Distribution: New Guinea (Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron rhombifolium
R.C.Fang; Acta Bot. Yunnan. 4(3): 251 (1982)
Distribution: China (Yunnan)
36 CHI
species :
Rhododendron rhuyuenense
Chun ex P.C.Tam; Survey Genus Rhododendron S. China 32, 96, f. 2 (1983)
Distribution: China (N-Guangdong, S-Hunan, E-Jiangxi)
36 CHI
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
Synonyms: hidden
= Rhododendron lingii Chun ex Ching; Iconogr. Cormophyt. Sin. 3: 151, t. 4256 (1974) (not validly published)
species :
Rhododendron rigidum
Franch.; Bull. Soc. Bot. Fr. 33: 233 (1886)
Distribution: China (Sichuan, Yunnan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Triflora
Synonyms: hidden
= Azalea rigida (Franch.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron bodinieri Franch.; J. Bot. [Morot] 12: 257 (1898) (possibly a hybrid with R. siderophyllum)
= Rhododendron caeruleum H.Lév.; Repert. Spec. Nov. Regni Veg. 12: 284 (1913)
= Rhododendron eriandrum H.Lév. ex Tagg; Rhododendron Soc. Notes 3: 228 (1928), nomen
= Rhododendron hesperium Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13: 263 (1922)
= Rhododendron racemosum var. rigidum (Franch.) Rehnelt; Gartenflora 57: 561 (1908)
= Rhododendron rarosquameum Balf.f.; Notes Roy. Bot. Gard. Edinburgh 10: 137 (1917)
= Rhododendron rubropunctatum H.Lév. & Vaniot; Repert. Spec. Nov. Regni Veg. 9: 448 (1911)
= Rhododendron sycnanthum Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 10: 162 (1917)
species :
Rhododendron rimicola
X.L.Tian, Y.P.Ma & J.Nielsen; Phytotaxa 395(2): 66 (2019)
Distribution: China (Yunnan)
36 CHI
species :
Rhododendron riparioides
(Cullen) Cubey; Fl. of China 14: 297 (2005)
Distribution: China (NW-Yunnan)
36 CHI
Synonyms: hidden
= Rhododendron calostrotum subsp. riparioides Cullen; Notes Roy. Bot. Gard. Edinburgh 36(1): 128 (1978)
= Rhododendron calostrotum var. riparioides (Cullen) R.C.Fang; Acta Bot. Yunnan. 4(3): 256 (1982)
species :
Rhododendron ripense
Makino; Bot. Mag. (Tokyo) 22: 55 (1908)
Distribution: Japan (Honshu, Shikoku, Kyushu)
38 JAP
Synonyms: hidden
= Azalea indica-alba Lindl.; Bot. Reg. 10: t. 811 (1824)
= Azalea ledifolia Hook.; Bot. Mag. 56: t. 2901 (1829)
= Azalea liliiflora Poit.; Ann. Inst. Roy. Hort. Fromont 1: 104 (1829)
= Azalea pulchra nudiflora Reider; Ann. Blumisterei Gartenbesitz. 6: 296 (1830)
= Azalea pulchra Paxton; Paxton´s Mag. Bot. 1: 126 (1841)
= Rhododendron mucronatum var. ripense (Makino) E.H.Wilson; Wils. & Rehd., Monogr. Azaleas 72 (1921)
= Rhododendron ripense f. leucanthum Sugim.; New Keys Woody Pl. Jap. 383 (1972)
species :
Rhododendron ripleyi
Merr.; Notul. Nat. Acad. Nat. Sci. Philadelphia No. 47, 4 (1940)
Distribution: N-Sumatra
42 SUM
Remarks: Subgen. Rhododendron
variant :
var. basitrichum
Sleumer; Reinwardtia 5: 164 (1960)
Distribution: N-Sumatra
42 SUM
variant :
var. cryptogonium
Sleumer; Reinwardtia 5: 164 (1960)
Distribution: N-Sumatra
42 SUM
species :
Rhododendron ririei
Hemsl. & E.H.Wilson; Bull. Misc. Inform. Kew 1910(4): 111-112 (1910)
Distribution: China (SW-Sichuan: Emei Shan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Argyrophylla
Synonyms: hidden
= Rhododendron ririei subsp. leiboense M.Y.Fang; Acta Phytotax. Sin. 30(6): 556 (1992)
species :
Rhododendron rivulare
Hand.-Mazz.; Anz. Akad. Wiss. Wien, Math.-Naturwiss. Kl. 58: 152 (1921)
Distribution: China (Guangdong, Guangxi, Guizhou, Hubei, Hunan, Sichuan)
36 CHI
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
species :
Rhododendron robinsonii
Ridl.; J. Fed. Malay States Mus. 4: 44 (1909)
Distribution: peninsular Malaysia (Perak, Pahang, Selangor)
42 MLY
Remarks: Subgen. Rhododendron
species :
Rhododendron roseatum
Hutch.; Notes Roy. Bot. Gard. Edinburgh 12: 57 (1919)
Distribution: China (Yunnan); NE-Myanmar
36 CHI 41 MYA
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Maddenia
Synonyms: hidden
= Rhododendron lasiopodum Hutch.; Notes Roy. Bot. Gard. Edinburgh 12: 58 (1919)
species :
Rhododendron roseiflorum
P.F.Stevens; Adansonia, Sér. 2, 18(1): 55 (1978)
Distribution: New Guinea (Irian Jaya)
42 NWG
species :
Rhododendron rosendahlii
Sleumer; Reinwardtia 5: 207 (1960)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron roseum
(Loisel.) Rehder; Wilson & Rehder, Monogr. Azaleas, 138 (1921)
Name: Early azalea
Distribution: USA (Alabama, Arkansas, Connecticut, Georgia, Illinois, Kentucky, Massachusetts, Maryland, Maine, Missouri, North Carolina, New Hampshire, New Jersey, New York, Ohio, Oklahoma, Pennsylvania, Rhode Island, Tennessee, Texas, Virginia, Vermont, West Virginia)
74 USA 75 USA 77 USA 78 USA
Remarks: Subgen. Pentanthera, Sect. Pentanthera
Synonyms: hidden
= Azalea nudiflora var. rosea (Loisel.) Sweet; Hort. Brit. 265 (1826)
= Azalea prinophylla Small; N. Amer. Fl. 29: 42 (1914)
= Azalea rosea Loisel.; Duh., Traité Arbr. Arbust., nouv. éd. 5: 224 (1812)
= Rhododendron canescens Porter; Bull. Torrey Bot. Club 16: 220 (1889), nom. illeg.
= Rhododendron nudiflorum var. roseum (Loisel.) Sweet; Hort. Brit., ed. 2: 344 (1830)
= Rhododendron prinophyllum (Small) Millais; Rhododendrons, 229 (1917)
= Rhododendron roseum f. albidum Steyerm.; Rhodora 62: 131 (1960)
= Rhododendron roseum f. lutescens Rehder; Contr. Gray Herb. 165: 10 (1947)
species :
Rhododendron rothschildii
Davidian; Rhododendron 1972: 50 (1972)
Distribution: China (NW-Yunnan); NE-Myanmar
36 CHI 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Falconera
species :
Rhododendron rousei
Argent & Madulid; New Plantsnzan 5(1): 25 (1998)
Distribution: Philippines (Sibuyan)
42 PHI
species :
Rhododendron roxieanum
Forrest; Notes Roy. Bot. Gard. Edinburgh 8(40): 344-345 (1915)
Distribution: China (Gansu, Shaanxi, SW-Sichuan, NW-Yunnan); SE-Tibet
36 CHI TIB
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Taliensia
Synonyms: hidden
= Rhododendron aischropeplum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(65): 229-230 (1922)
= Rhododendron poecilodermum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(65): 285-287 (1922)
= Rhododendron recurvum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 11(52-53): 110-114 (1919)
= Rhododendron roxieanum var. parvum Davidian; Rhododendron Species 2: 308 (1989)
= Rhododendron roxieanum var. recurvum (Balf.f. & Forrest) Davidian; Rhododendron Species 3: 216 (1992)
variant :
var. cucullatum
(Hand.-Mazz.) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 36(1): 119 (1978)
Distribution: China (SW-Sichuan, NW-Yunnan); SE-Tibet
36 CHI TIB
Synonyms: hidden
= Rhododendron coccinopeplum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(65): 248-249 (1922)
= Rhododendron cucullatum Hand.-Mazz.; Anz. Akad. Wiss. Wien, Math.-Naturwiss. Kl. 4-5: 26 (1921)
= Rhododendron porphyroblastum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(65): 287-288 (1922)
variant :
var. oreonastes
(Balf.f. & Forrest) T.L.Ming; Acta Bot. Yunnan. 6(2): 166 (1984)
Distribution: China (NW-Yunnan)
36 CHI
Synonyms: hidden
= Rhododendron recurvum var. oreonastes Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 11(52-53): 113-114 (1919)
species :
Rhododendron roxieoides
D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 39(2): 347-348, 478 (1982)
Distribution: China (Chongqing, E-Sichuan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Taliensia
species :
Rhododendron rubellum
Sleumer; Reinwardtia 5: 94 (1960)
Distribution: New Guinea (Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron rubiginosum
Franch.; Bull. Soc. Bot. Fr. 34: 282 (1887)
Distribution: China (Sichuan, Yunnan); Tibet; Myanmar (Kachin)
36 CHI TIB 41 MYA
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Heliolepida
Synonyms: hidden
= Azalea rubiginosa (Franch.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron catapastum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13: 36 (1920)
= Rhododendron desquamatum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13: 40 (1920)
= Rhododendron rubiginosum var. ptilostylum R.C.Fang; Acta Bot. Yunnan. 4: 253. (1982)
= Rhododendron squarrosum Balf.f.; ex Notes Bot. Gard. Edinb. 17: 266 (1930), nomen
= Rhododendron stenoplastum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13: 60 (1920)
variant :
var. leclerei
(H.Lév.) R.C.Fang; Acta Bot. Yunnan. 4(3): 253 (1982)
Distribution: China (Yunnan)
36 CHI
Synonyms: hidden
= Rhododendron leclerei H.Lév.; Repert. Spec. Nov. Regni Veg. 12: 284 (1913)
species :
Rhododendron rubineiflorum
Craven; Notes Roy. Bot. Gard. Edinburgh 38(1): 142 (1980)
Distribution: New Guinea (Irian Jaya, Papua New Guinea)
42 NWG
species :
Rhododendron rubrantherum
Kingdon-Ward; Gard. Chron., Ser. 3, 94: 363 (1933)
Distribution: Myanmar (Chin, Kachin, Sagaing)
41 MYA
species :
Rhododendron rubrobracteatum
Sleumer; Reinwardtia 5: 175 (1960)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron rubropilosum
Hayata; J. Coll. Sci. Imp. Univ. Tokyo 30(1): 173-174 (1911)
Distribution: Taiwan
38 TAI
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
Synonyms: hidden
= Rhododendron caryophyllum Hayata; Icon. Pl. Formosan. 3: 130-131, t. 23 (1913)
= Rhododendron randaiense Hayata; Icon. Pl. Formosan. 5: Suppl. 43 (1917)
variant :
var. grandiflorum
T.Yamaz.; Rev. Gen. Rhododendron Japan, Taiwan, Korea Sakhalin 36 (1996)
Distribution: Taiwan
38 TAI
species :
Rhododendron rufescens
Franch.; J. Bot. [Morot] 9: 397 (1895)
Distribution: China (Qinghai, Sichuan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Pogonanthum
Synonyms: hidden
= Rhododendron daphniflorum Diels; Acta Horti Gothob. 1: 180 (1924)
species :
Rhododendron rufohirtum
Hand.-Mazz.; Anz. Akad. Wiss. Wien, Math.-Naturwiss. Kl. 18 (1921)
Distribution: China (SE-Guizhou, S-Sichuan, NE-Yunnan)
36 CHI
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
species :
Rhododendron rufum
Batalin; Trudy Imp. S.-Peterburgsk. Bot. Sada 11(2): 490-491 (1892 publ. 1891)
Distribution: China (C-Gansu, SW-Gansu, E-Qinghai, S-Qinghai, Shaanxi, W-Sichuan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Taliensia
Synonyms: hidden
= Rhododendron rufum var. glandulosum G.H.Wang; Bull. Bot. Res., Harbin 15(4): 428 (1995)
= Rhododendron wallaceanum Millais; Rhododendrons, Ser. 2: 259 (1924)
= Rhododendron weldianum Rehder & E.H.Wilson; Pl. Wilson. [Sargent] 1: 532 (1913)
species :
Rhododendron rugosum
H.Low ex Hook.f.; Hooker´s Icon. Pl., t. 885 (1852)
Distribution: Borneo
42 BOR
Remarks: Subgen. Rhododendron
variant :
var. laeve
Argent, A.Lamb & Phillipps; Notes Roy. Bot. Gard. Edinburgh 42(1): 118 (1984)
Distribution: Borneo (Sabah)
42 BOR
Synonyms: hidden
= Rhododendron kinabaluense Merr.; J. Straits Branch Roy. Asiat. Soc. 76: 108 (1917)
= Rhododendron rugosum var. kinabaluense (Merr.) Argent; Rhododendrons subgen. Vireya 263 (2006)
species :
Rhododendron rupicola
W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 8: 203 (1914)
Distribution: China (Sichuan, Yunnan); SE-Tibet; NE-Myanmar
36 CHI TIB 41 MYA
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Lapponica
Synonyms: hidden
= Rhododendron achroanthum Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 9: 208 (1916)
= Rhododendron propinquum Balf.f. & Kingdon-Ward ex Tagg; Rhododendron Soc. Notes 3: 30 (1925), nomen
variant :
var. chryseum
(Balf.f. & Kingdon-Ward) Philipson & Philipson; Notes Roy. Bot. Gard. Edinburgh 34(1): 62 (1975)
Distribution: China (W-Sichuan, NW-Yunnan); SE-Tibet; NE-Myanmar (Kachin)
36 CHI TIB 41 MYA
Synonyms: hidden
= Rhododendron chryseum Balf.f. & Kingdon-Ward; Notes Roy. Bot. Gard. Edinburgh 9: 219 (1916)
= Rhododendron nomophilum Balf.f. ex Tagg; Rhododendron Soc. Notes 3: 37 (1925), nom. nud.
variant :
var. muliense
(Balf.f. & Forrest) M.N.Philipson & Philipson; Notes Roy. Bot. Gard. Edinburgh 34(1): 63 (1975)
Distribution: China (SW-Sichuan, NW-Yunnan)
36 CHI
Synonyms: hidden
= Rhododendron muliense Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 11: 101 (1919)
species :
Rhododendron rupivalleculatum
P.C.Tam; Guihaia 2(2): 69 (1982), et P. C. Tam, Survey Genus Rhododendron S. China 95, 14 (1983)
Distribution: China (Guangdong, Guangxi)
36 CHI
species :
Rhododendron rushforthii
Argent & D.Chamb.; New Plantsman 3(4): 195 (1996)
Distribution: ?S-China; Vietnam
41 VIE
species :
Rhododendron russatum
Balf.f. & Forrest; Notes Bot. Gard Edin. 11: 126 (1919)
Distribution: China (SW-Sichuan, Yunnan); Myanmar
36 CHI 41 MYA
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Lapponica
Synonyms: hidden
= Rhododendron cantabile Balf.f. ex Hutch.; Bot. Mag. 148: t. 8963 (1923)
= Rhododendron osmerum Balf.f. & Forrest; Spec. Rhododendron, 425 (1930)
species :
Rhododendron ruttenii
J.J.Sm.; Repert. Spec. Nov. Regni Veg. 30: 170 (1932)
Distribution: Moluccas (Seram)
42 MOL
Remarks: Subgen. Rhododendron
species :
Rhododendron sajanense
Stepanov; Vestn. Krasnoyarsk. Gosud. Agrar. Univ. 4: 160 (2017)
Distribution: Siberia (Krasnoyarsk)
30 SIB
species :
Rhododendron salicifolium
Becc.; Malesia 1: 202 (1878)
Distribution: Borneo
42 BOR
Remarks: Subgen. Rhododendron
species :
Rhododendron saluenense
Franch.; J. Bot. [Morot] 3(5): 263 (1898)
Distribution: China (Sichuan, Yunnan); Tibet; Myanmar (Kachin)
36 CHI TIB 41 MYA
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Saluenensia
Synonyms: hidden
= Rhododendron amaurophyllum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13: 230 (1922)
= Rhododendron humicola Balf.f.; Notes Roy. Bot. Gard. Edinburgh 17: 390 (1930)
variant :
var. prostratum
(W.W.Sm.) R.C.Fang; Acta Bot. Yunnan. 4(3): 256 (1982)
Distribution: China (NW-Yunnan)
36 CHI
Synonyms: hidden
= Rhododendron chameunum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13: 37 (1920)
= Rhododendron charidotes Balf.f. & Farrer; Notes Roy. Bot. Gard. Edinburgh 13: 242 (1922)
= Rhododendron cosmetum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13: 38 (1920)
= Rhododendron prostratum W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 8: 202 (1914)
= Rhododendron saluenense subsp. chameunum (Balf.f. & Forrest) Cullen; Notes Roy. Bot. Gard. Edinburgh 36(1): 112 (1978)
= Rhododendron sericocalyx Balf.f.; Notes Roy. Bot. Gard. Edinburgh 17: 200 (1930)
species :
Rhododendron sanctum
Nakai; Bot. Mag. (Tokyo) 46: 630 (1932)
Distribution: Japan (Honshu)
38 JAP
Remarks: Subgen. Tsutsusi, Sect. Brachycalyx
Synonyms: hidden
= Rhododendron sanctum f. albiflorum T.Yamaz.; Revis. Gen. Rhododendron Japan, Taiwan, Korea & Sakhalin 90 (1996), nom. illeg.
= Rhododendron sanctum f. albiflorum Sugim.; New Keys Woody Pl. Jap. 383 (1972)
= Rhododendron sanctum var. lasiogynum Nakai ex Sugim.; Key Trees Shrubs Japan 304 (1936)
= Rhododendron weyrichii var. sanctum (Nakai) Hatus.; Sci. Rep. Yokosuka City Mus. 15: 23 (1969)
species :
Rhododendron sanguineum
Franch.; J. Bot. [Morot] 12(15-16): 259 (1898), et Cowan, Notes Bot. Gard. Edinb. 20: 66 (1940), descr. ampl.
Distribution: China (NW-Yunnan); SE-Tibet; NE-India (Arunachal Pradesh); N-Myanmar
36 CHI TIB 40 IND 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Neriiflora
Synonyms: hidden
= Rhododendron sanguineum subsp. sanguineoides Cowan; Notes Roy. Bot. Gard. Edinburgh 20(97): 69 (1940)
= Rhododendron sanguineum var. sanguineoides (Cowan) Davidian; Rhododendron Species, 3 (Ser. Neriiflorum-Thomsonii, etc.): 134 (1992)
variant :
var. cloiophorum
(Balf.f. & Forrest) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 37(2): 334 (1979)
Distribution: China (NW-Yunnan); SE-Tibet
36 CHI TIB
Synonyms: hidden
= Rhododendron asmenistum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 29-30 (1920)
= Rhododendron cloiophorum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 11(52-53): 37-39 (1919)
= Rhododendron cloiophorum subsp. asmenistum (Balf.f. & Forrest) Tagg; Spec. Rhododendron 545 (1930)
= Rhododendron cloiophorum subsp. leucopetalum (Balf.f. & Forrest) Tagg; Spec. Rhododendron 545 (1930)
= Rhododendron cloiophorum var. leucopetalum (Balf.f. & Forrest) Davidian
= Rhododendron leucopetalum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 11(52-53): 86-88 (1919)
= Rhododendron sanguineum subsp. cloiophorum (Balf.f. & Forrest) Cowan; Notes Roy. Bot. Gard. Edinburgh 20(97): 71 (1940)
= Rhododendron sanguineum subsp. leucopetalum (Balf.f. & Forrest) Cowan; Notes Roy. Bot. Gard. Edinburgh 20(97): 73 (1940)
variant :
var. didymoides
Tagg; Notes Roy. Bot. Gard. Edinburgh 16(79): 208 (1931)
Distribution: China (NW-Yunnan); SE-Tibet; NE-Myanmar
36 CHI TIB 41 MYA
Synonyms: hidden
= Rhododendron cloiophorum subsp. mannophorum (Balf.f. & Forrest) Tagg; Spec. Rhododendron 545 (1930)
= Rhododendron cloiophorum subsp. roseotinctum (Balf.f. & Forrest) Tagg; Spec. Rhododendron 545 (1930)
= Rhododendron cloiophorum var. mannophorum (Balf.f. & Forrest) Davidian; Rhododendron Species, 3 (Ser. Neriiflorum-Thomsonii, etc.): 115 (1992)
= Rhododendron cloiophorum var. roseotinctum (Balf.f. & Forrest) Davidian; Rhododendron Species, 3 (Ser. Neriiflorum-Thomsonii, etc.): 115 (1992)
= Rhododendron mannophorum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 51 (1920)
= Rhododendron roseotinctum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 11(52-53): 124-126 (1919)
= Rhododendron sanguineum subsp. consanguineum Cowan; Notes Roy. Bot. Gard. Edinburgh 20(97): 68 (1940)
= Rhododendron sanguineum subsp. didymoides (Tagg) Cowan; Notes Roy. Bot. Gard. Edinburgh 20: 72 (1940)
= Rhododendron sanguineum subsp. roseotinctum (Balf.f. & Forrest) Cowan; Notes Roy. Bot. Gard. Edinburgh 20(97): 71 (1940)
= Rhododendron sanguineum var. consanguineum (Cowan) Davidian; Rhododendron Species, 3 (Ser. Neriiflorum-Thomsonii, etc.): 133 (1992)
variant :
var. didymum
(Balf.f. & Forrest) T.L.Ming; Acta Bot. Yunnan. 6(2): 171 (1984)
Distribution: China (NW-Yunnan); SE-Tibet
36 CHI TIB
Synonyms: hidden
= Rhododendron didymum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(65): 256-257 (1922)
= Rhododendron sanguineum subsp. didymum (Balf.f. & Forrest) Cowan; Notes Roy. Bot. Gard. Edinburgh 20(97): 70 (1940)
variant :
var. haemaleum
(Balf.f. & Forrest) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 37(2): 334 (1979)
Distribution: China (NW-Yunnan); SE-Tibet
36 CHI TIB
Synonyms: hidden
= Rhododendron haemaleum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 11(52-53): 71-74 (1919)
= Rhododendron haemaleum var. atrorubrum (Cowan) Davidian; Rhododendron Species, 3 (Ser. Neriiflorum-Thomsonii, etc.): 124 (1992)
= Rhododendron haemaleum var. mesaeum (Balf.f. ex Cowan) Davidian; Rhododendron Species, 3 (Ser. Neriiflorum-Thomsonii, etc.): 124 (1992)
= Rhododendron mesaeum Balf.f. ex Cowan; Notes Bot. Gard. Edinb. 20: 70 (1940)
= Rhododendron sanguineum subsp. atrorubrum Cowan; Notes Roy. Bot. Gard. Edinburgh 20: 69 (1940)
= Rhododendron sanguineum subsp. haemaleum (Balf.f. & Forrest) Cowan; Notes Roy. Bot. Gard. Edinburgh 20(97): 69 (1940)
= Rhododendron sanguineum subsp. melleum Cowan; Notes Roy. Bot. Gard. Edinburgh 20: 73 (1940)
= Rhododendron sanguineum subsp. mesaeum Balf.f. ex Cowan; Notes Roy. Bot. Gard. Edinburgh 20: 70 (1940)
variant :
var. himertum
(Balf.f. & Forrest) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 37(2): 334 (1979)
Distribution: China (NW-Yunnan); SE-Tibet
36 CHI TIB
Synonyms: hidden
= Rhododendron himertum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 48 (1920)
= Rhododendron himertum subsp. nebrities (Balf.f. & Forrest) Tagg; Spec. Rhododendron 533 (1930)
= Rhododendron himertum subsp. poliopeplum (Balf.f. & Forrest) Tagg; Spec. Rhododendron 533 (1930)
= Rhododendron nebrites Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 53 (1920)
= Rhododendron poliopeplum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 56-57 (1920)
= Rhododendron sanguineum subsp. aizoides Cowan; Notes Roy. Bot. Gard. Edinburgh 20(97): 73 (1940)
= Rhododendron sanguineum subsp. himertum (Balf.f. & Forrest) Cowan; Notes Roy. Bot. Gard. Edinburgh 20(97): 72 (1940)
species :
Rhododendron santapaui
Sastry, Kataki, Pet.A.Cox, Pat.Cox & Hutchison; J. Bombay Nat. Hist. Soc. 65: 744 (1969)
Distribution: NE-India (Arunachal Pradesh)
40 IND
species :
Rhododendron sargentianum
Rehder & E.H.Wilson; Sarg., Pl. Wilson. [Sargent] 1: 504 (1913)
Distribution: China (Sichuan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Pogonanthum
species :
Rhododendron saxatile
B.Y.Ding & Y.Y.Fang; Bull. Bot. Res., Harbin 7(2): 29-30, f. 2 (1987)
Distribution: China (S-Zhejiang)
36 CHI
species :
Rhododendron saxicola
Sleumer; Blumea, Suppl. 4, 49 (1958)
Distribution: Vietnam
41 VIE
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
species :
Rhododendron saxifragoides
J.J.Sm.; Meded Herb. Leid No. 25, 3 (1915)
Distribution: New Guinea (Irian Jaya, Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron sayeri
Sleumer; Reinwardtia 5: 188 (1960)
Distribution: New Guinea (Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron scabridibracteum
Sleumer; Reinwardtia 5: 215 (1960)
Distribution: New Guinea (Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron scabrifolium
Franch.; Bull. Soc. Bot. Fr. 33: 236 (1886); Hook.f. in Bot. Mag. t. 7159 (1891)
Distribution: China (Sichuan, C-Yunnan, W-Yunnan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Scabrifolia
Synonyms: hidden
= Azalea scabrifolia (Franch.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
variant :
var. pauciflorum
Franch.; J. Bot. [Morot] 12: 262 (1898)
Distribution: China (Yunnan)
36 CHI
species :
Rhododendron scabrum
G.Don; Gen. Hist. 3: 846 (1834)
subspecies :
subsp. scabrum
Distribution: Ryukyu Isl.; Taiwan [I]; Java [I]
38 NNS tai 42 jaw
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
Synonyms: hidden
= Azalea bealei Fortune; Journey China 330 (1852)
= Azalea sublanceolata (Miq.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron indicum var. sinense Miq.; Ann. Mus. Bot. Lugduno-Batavi 1: 33 (1863)
= Rhododendron indicum var. sublanceolatum (Miq.) Makino; Bot. Mag. (Tokyo) 2: 387 (1891)
= Rhododendron ledifolium var. purpureum Maxim.; Mém. Acad. Imp. Sci. Saint Pétersbourg, Sér. 7, 16(9): 36 (1870)
= Rhododendron scabrum f. albiflorum Hatus.; J. Phytogeogr. Taxon. 26: 73 (1978)
= Rhododendron scabrum f. linearisepalum Sugim.; J. Geobot. 22: 52 (1975)
= Rhododendron scabrum f. roseum Hatus. & Kudaka; J. Phytogeogr. Taxon. 44: 86 (1996)
= Rhododendron sublanceolatum Miq.; Ann. Mus. Bot. Lugduno-Batavi 2: 163 (1866)
subspecies :
subsp. amanoi
(Ohwi) D.F.Chamb. & Rae; Edinburgh J. Bot. 47(2): 113 (1990)
Distribution: Ryukyu Isl.
38 NNS
Synonyms: hidden
= Rhododendron amanoi Ohwi; Bull. Nat. Sci. Mus., Tokyo, n. s. 1: No. 1 (No. 34) 4 (1954)
= Rhododendron amanoi var. glandulistylum Hatus.; Sci. Bull. Agric. Div. Univ. Ryukyu 1: 4 (1954)
species :
Rhododendron scarlatinum
Sleumer; Reinwardtia 5: 168 (1960)
Distribution: C-Sulawesi
42 SUL
Remarks: Subgen. Rhododendron
species :
Rhododendron schistocalyx
Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 58-59 (1920)
Distribution: China (SW-Yunnan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Parishia
species :
Rhododendron schizostigma
Sleumer; Reinwardtia 5: 63 (1960)
Distribution: New Guinea (Irian Jaya, Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron schlechteri
Lauterb.; K. Schum. & Lauterb. Nachtr. Fl. Deutsch. Südsee, 338 (1905)
Distribution: New Guinea (Irian Jaya, Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron schlippenbachii
Maxim.; Bull. Acad. Petersb. 15: 226 (1871)
Distribution: Russian Far East (Primorye); China (Liaoning, Nei Mongol); North Korea; South Korea; Japan
31 RFE 36 CHI 38 JAP KOR NKO
Remarks: Subgen. Pentanthera, Sect. Sciadorhodion
Synonyms: hidden
= Azalea schlippenbachii (Maxim.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron schlippenbachii f. albiflorum Y.N.Lee; Korean J. Bot. 17(2): 85 (1974)
species :
Rhododendron scopulorum
Hutch. ex Hutch.; Notes Bot. Gard. Edinb. 16: 178 (1931), latine
Distribution: SE-Tibet
36 TIB
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Maddenia
species :
Rhododendron scopulum
(G.Z.Li) G.Z.Li; Guihaia 30(3): 295 (2010)
Distribution: China (EC-Guangxi)
36 CHI
Synonyms: hidden
= Rhododendron dachengense var. scopulum G.Z.Li; Acta Bot. Yunnan. 23: 288 (2001)
species :
Rhododendron scortechinii
King & Gamble; J. Asiat. Soc. Bengal, Pt. 2, Nat. Hist. 74(2): 76 (1906)
Distribution: peninsular Malaysia (Gunung Bubu, Perak, Gunung Benom & Gunung Ulu Kali, Pahang)
42 MLY
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron orion Ridl.; J. Fed. Malay States Mus. 5: 39 (1914)
species :
Rhododendron searleanum
Sleumer; Blumea 21(2): 367 (1973)
Distribution: New Guinea (Irian Jaya, Papua New Guinea)
42 NWG
Synonyms: hidden
= Rhododendron reevei Argent; Folia Malaysiana 4(2): 106 (2003)
species :
Rhododendron searsiae
Rehder & E.H.Wilson; Sarg., Pl. Wilson. [Sargent] 1: 522 (1913)
Distribution: China (Sichuan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Triflora
species :
Rhododendron seimundii
J.J.Sm.; Gard. Bull. Straits Settlem. 8: 262 (1935)
Distribution: peninsular Malaysia (Gunung Tahan, Pahang)
42 MLY
Remarks: Subgen. Rhododendron
species :
Rhododendron seinghkuense
Kingdon-Ward; Spec. Rhododendron, 234 (1930); Hutch. in Notes Bot. Gard. Edinb. xvi.174 (1931), latine
Distribution: China (NW-Yunnan); SE-Tibet; N-Myanmar (Kachin)
36 CHI TIB 41 MYA
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Edgeworthia
species :
Rhododendron selense
Franch.; J. Bot. [Morot] 3(5): 257 (1898)
subspecies :
subsp. selense
Distribution: China (Yunnan, SW-Sichuan); Myanmar (Kachin)
36 CHI 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Selensia
Synonyms: hidden
= Rhododendron axium Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 30 (1920)
= Rhododendron chalarocladum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(65): 240-241 (1922)
= Rhododendron metrium Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 52 (1920)
= Rhododendron nanothamnum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 53 (1920)
= Rhododendron pagophilum Balf.f. & Kingdon-Ward; Notes Roy. Bot. Gard. Edinburgh 9(44-45): 256-257 (1916)
= Rhododendron probum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(65): 288-289 (1922)
= Rhododendron selense var. pagophilum (Balf.f. & Kingdon-Ward) Cowan & Davidian; Rhododendron Year Book 6: 158 (1952)
= Rhododendron selense var. probum (Balf.f. & Forrest) Cowan & Davidian; Rhododendron Year Book 6: 158 (1952)
subspecies :
subsp. dasycladum
(Balf.f. & W.W.Sm.) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 36(1): 118 (1978)
Distribution: China (SW-Sichuan, NW-Yunnan); E-Tibet
36 CHI TIB
Synonyms: hidden
= Rhododendron dasycladum Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 10(47-48): 98-100 (1917)
= Rhododendron dolerum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 40-41 (1920)
= Rhododendron rhaibocarpum Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 10(47-48): 142-145 (1917)
= Rhododendron selense var. dasycladum (Balf.f. & W.W.Sm.) T.L.Ming; Acta Bot. Yunnan. 6(2): 157-158 (1984)
subspecies :
subsp. jucundum
(Balf.f. & W.W.Sm.) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 36(1): 118 (1978)
Distribution: China (W-Yunnan)
36 CHI
Synonyms: hidden
= Rhododendron blandulum Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 10(47-48): 87-88 (1917)
= Rhododendron jucundum Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 9(44-45): 242-243 (1916)
= Rhododendron selense var. jucundum (Balf.f. & W.W.Sm.) T.L.Ming; Acta Bot. Yunnan. 6(2): 157 (1984)
species :
Rhododendron semibarbatum
Maxim.; Bull. Acad. Petersb. 15: 229 (1871)
Distribution: Japan (Hokkaido, Honshu, Shikoku, Kyushu)
38 JAP
Remarks: Subgen. Mumeazalea
Synonyms: hidden
= Azalea semibarbata (Maxim.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Mumeazalea semibarbata Makino; Bot. Mag. (Tokyo) 28: 338 (1914)
species :
Rhododendron semnoides
Tagg & Forrest; Notes Roy. Bot. Gard. Edinburgh 15(72): 116-119 (1926)
Distribution: China (NW-Yunnan); SE-Tibet
36 CHI TIB
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Falconera
species :
Rhododendron seniavinii
Maxim.; Mém. Acad. Imp. Sci. Saint Petersbourg (Ser. 7) 16(9): 33, t. 3, f. 21-24 (1870)
Distribution: China (Fujian, Hunan, Jiangxi)
36 CHI
Synonyms: hidden
= Rhododendron seniavinii var. crassifolium P.C.Tam; Survey Genus Rhododendron S. China 63, 111 (1983)
= Azalea seniavini (Maxim.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
variant :
var. shangyounicum
R.L.Liu & L.M.Cao; Guihaia 28(5): 574 (2008)
Distribution: China (Jiangxi)
36 CHI
species :
Rhododendron seranicum
J.J.Sm.; Repert. Spec. Nov. Regni Veg. 30: 165 (1932)
Distribution: Moluccas (Ambon, Seram, Buru Isl.)
42 MOL
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron seranense J.J.Sm.; Bot. Jahrb. Syst. 68: 202 (1937)
species :
Rhododendron serotinum
Hutch.; Bot. Mag. 146: t. 8841 (1920)
Distribution: China (?S-Yunnan); Laos; N-Vietnam
36 CHI 41 LAO VIE
species :
Rhododendron serpyllifolium
(A.Gray) Miq.; Ann. Mus. Bot. Lugduno-Batavi 2: 165 (1866)
Distribution: Japan (Honshu, Shikoku, Kyushu)
38 JAP
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
Synonyms: hidden
= Azalea serpyllifolia A.Gray; Perry, Narr. Exped. China Japan 2: 315 (1857)
= Rhododendron serpyllifolium f. albiflorum (Makino) H.Hara; Enum. Spermatophytarum Japon. 1: 53 (1948)
= Rhododendron serpyllifolium f. album T.Yamaz.; J. Jap. Bot. 64: 280 (1989)
= Rhododendron serpyllifolium f. seigaiunzen T.Yamaz.; Fl. Japan 3a: 29 (1993)
= Rhododendron serpyllifolium f. usukiunzen T.Yamaz.; Fl. Japan 3a: 29 (1993)
= Rhododendron serpyllifolium var. albiflorum Makino; Bot. Mag. (Tokyo) 22: 57 (1908)
species :
Rhododendron serrulatum
(Small) Millais; Rhododendrons, 241 (1917)
Distribution: USA (Alabama, Georgia, Florida)
78 USA
Remarks: Subgen. Pentanthera, Sect. Pentanthera
Synonyms: hidden
= Azalea serrulata Small; Fl. S.E. U.S. [Small] 883 (1903)
= Azalea serrulata var. georgiana (Rehder) Ashe; J. Elisha Mitchell Sci. Soc. 38: 91 (1922)
= Rhododendron serrulatum f. mollicum Rehder; Wils. & Rehd., Monogr. Azaleas 155 (1921)
= Rhododendron serrulatum var. georgianum Rehder; Wils. & Rehd., Monogr. Azaleas 156 (1921)
= Rhododendron viscosum var. serrulatum (Small) H.E.Ahles; J. Elisha Mitchell Sci. Soc. 80: 173 (1964)
species :
Rhododendron sessilifolium
J.J.Sm.; Contr. Arnold Arbor. 8: 125 (1934)
Distribution: Sumatra
42 SUM
Remarks: Subgen. Rhododendron
species :
Rhododendron setiferum
Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 11(52-53): 137-139 (1919)
Distribution: China (NW-Yunnan); SE-Tibet; Myanmar
36 CHI TIB 41 MYA
Synonyms: hidden
= Rhododendron selense subsp. setiferum (Balf.f. & Forrest) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 36(1): 118 (1978)
= Rhododendron vestitum Tagg & Forrest; Notes Roy. Bot. Gard. Edinburgh 16(79): 210-211 (1931)
species :
Rhododendron setosum
D.Don; Trans. Wern. Soc. 3: 408 (1821)
Distribution: S-Tibet; Nepal; Bhutan; N-India (Arunachal Pradesh, Sikkim, West Bengal, Chumbi)
36 TIB 40 BHU IND NEP
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Lapponica
Synonyms: hidden
= Azalea setosa (D.Don) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron anthopogon Wall.; Numer. List [Wallich] no. 759 (1829), partim
species :
Rhododendron shanii
W.P.Fang; Bull. Bot. Res., Harbin 3(4): 38-40, pl. 1 (1983)
Distribution: China (W-Anhui)
36 CHI
species :
Rhododendron shaoakouense
S.S.Ying; New Taxa New Names 4: 142 (2022)
Distribution: Taiwan
38 TAI
Remarks: provisionally accepted name
species :
Rhododendron sherriffii
Cowan; Notes Roy. Bot. Gard. Edinburgh 19(94): 231-232 (1937)
Distribution: S-Tibet
36 TIB
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Fulgensia
species :
Rhododendron shimenense
Q.X.Liu & C.M.Zhang; Acta Phytotax. Sin. 29(3): 270-271, f. 1 (1991)
Distribution: China (N-Hunan)
36 CHI
Remarks: ?Rhododendron augustini x R. lutescens
species :
Rhododendron shweliense
Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13: 293 (1922)
Distribution: China (Yunnan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Glauca
species :
Rhododendron sichotense
Pojark.; Fl. URSS 18: 722 (1952)
Distribution: Russian Far East (Amur, Primorye)
31 RFE
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron dauricum subsp. sichotense (Pojark.) Alexandrova & P.A.Schmidt; Betr. Gehölzk. 68 (1981 publ. 1982)
= Rhododendron mucronulatum subsp. sichotense (Pojark.) A.P.Khokhr.; Sosud. Rast. Sovet. Dal´nego Vostoka 5: 134 (1991)
species :
Rhododendron sidereum
Balf.f.; Notes Roy. Bot. Gard. Edinburgh 12(57-58): 162-164 (1920)
Distribution: China (W-Yunnan); NE-India (Arunachal Pradesh); N-Myanmar (Kachin, Shan)
36 CHI 40 IND 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Grandia
species :
Rhododendron siderophyllum
Franch.; J. Bot. [Morot] 3(5): 262 (1898)
Distribution: China (Sichuan, Guizhou, Yunnan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Triflora
Synonyms: hidden
= Rhododendron ioanthum Balf.f.; Notes Roy. Bot. Gard. Edinburgh 13: 270 (1922)
= Rhododendron jahandiezii H.Lév.; Repert. Spec. Nov. Regni Veg. 13: 340 (1914)
= Rhododendron leucandrum H.Lév.; Repert. Spec. Nov. Regni Veg. 12: 103 (1913)
= Rhododendron obscurum Franch. ex Balf.f.; Notes Roy. Bot. Gard. Edinburgh 13: 278 (1922)
= Rhododendron seguinii H.Lév.; Repert. Spec. Nov. Regni Veg. 13: 148 (1914)
species :
Rhododendron sikangense
W.P.Fang; Acta Phytotax. Sin. 2(1): 81-82, pl. 7 (1952)
Distribution: China (W-Sichuan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Maculifera
Synonyms: hidden
= Rhododendron cookeanum Davidian; Rhododendron Year Book 16: 105 (1961)
variant :
var. exquisitum
(T.L.Ming) T.L.Ming; Acta Bot. Yunnan. 6(2): 165 (1984)
Distribution: China (NE-Yunnan)
36 CHI
Synonyms: hidden
= Rhododendron exquisitum T.L.Ming; Acta Bot. Yunnan. 3(1): 121 (1981)
species :
Rhododendron sikayotaizanense
Masam.; Trans. Nat. Hist. Soc. Taiwan 29: 27 (1939)
Distribution: Taiwan
38 TAI
species :
Rhododendron simiarum
Hance; J. Bot. 19: 243 (1881); 22: 22 (1884)
Distribution: China (Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hainan, S-Hunan, Jiangxi, S-Zhejiang)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Argyrophylla
Synonyms: hidden
= Azalea lugens Dum.Cours.; Bot. Cult., ed. 2, 3: 337 (1811), nom. nud.
= Azalea simiarum (Hance) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron fokienense Franch.; Bull. Soc. Bot. France 46: 210 (1899)
= Rhododendron fordii Hemsl.; Bull. Misc. Inform. Kew 1894: 5 (1894)
= Rhododendron simiarum var. deltoideum P.C.Tam; Survey Genus Rhododendron S. China 95, 21 (1983)
variant :
var. grandifolium
G.Z.Li; Guihaia 15(4): 295 (1995)
Distribution: China (Guangxi, Hainan)
36 CHI
variant :
var. versicolor
(Chun & W.P.Fang) M.Y.Fang; Bull. Bot. Res. North-East. Forest. Inst. 12(3): 218 (1992), et Fl. Reipubl. Popularis Sin. 57(2): 158 (1995)
Distribution: China (N-Guangxi)
36 CHI
Synonyms: hidden
= Rhododendron versicolor Chun & W.P.Fang; Acta Phytotax. Sin. 6(2): 172, pl. 43 (1957)
species :
Rhododendron simsii
Planch.; Fl. des Serres 9: 78 (1853 publ. 1854)
Distribution: China (Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hubei, Hunan, Jiangsu, Jiangxi, Sichuan, Yunnan, Zhejiang); South Korea [I]; Ryukyu Isl.; Taiwan; Myanmar (Chin, Kachin, Sagaing); Thailand; Laos; Vietnam; Mexico [c]; Guatemala [I]; Honduras [I]; Nicaragua [I]; Colombia [c]; Bolivia [c]; Brazil [c]
36 CHI 38 kor NNS TAI 41 LAO MYA THA VIE 79 mex 80 gua hon nic 82 clm 83 bol 84 bra
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
Synonyms: hidden
= Azalea breynii (Planch.) André; Belgique Hort. 15: 183 (1865)
= Azalea fimbriata Dum.Cours.; Bot. Cult., ed. 2, 3: 337 (1811), nom. nud.
= Azalea indica var. simsii (Maxim.) L.H.Bailey; Cycl. Amer. Hort. [L.H.Bailey] 1: 122 (1900)
= Azalea indica var. vittata (Fortune) Van Houtte; Fl. Serres 9: t. 886 (1854)
= Azalea simsii (Planch.) H.F.Copel.; Amer. Midl. Naturalist 30: 597 (1943)
= Azalea simsii var. vittata (Fortune) E.H.Wilson; Monogr. Azaleas 48 (1921)
= Azalea vittata Dum.Cours.; Bot. Cult., ed. 2, 3: 337 (1811), nom. nud.
= Azalea vittata Fortune; Tea Distr. China 330 (1852)
= Azalea vittata-punctata (Van Houtte) Lem.; Ill. Hort. 1: t. 20 (1854)
= Rhododendron annamense Rehder; J. Arnold Arbor. 10: 182 (1929)
= Rhododendron bellum W.P.Fang & G.Z.Li; Bull. Bot. Res., Harbin 4(1): 3-4, photo 3 (1984)
= Rhododendron bicolor P.C.Tam; Survey Genus Rhododendron S. China 101 (1983) (not Sweet (1830)
= Rhododendron breynii Planch.; Fl. Serres Jard. Eur. 9: 77 (1853)
= Rhododendron calleryi Planch.; Fl. Serres Jard. Eur. 9: 81 (1854)
= Rhododendron indicum var. formosanum Hayata; Icon. Pl. Formosan. 3: 134 (1913)
= Rhododendron indicum var. ignescens Sweet; Brit. Fl. Gard. 2: t. 128 (1833)
= Rhododendron indicum var. puniceum Sweet; Brit. Fl. Gard. 2: t. 128 (1833)
= Rhododendron indicum var. simsii (Planch.) Maxim.; Mém. Acad. Imp. Sci. Saint Pétersbourg, Sér. 7, 16(9): 38 (1870)
= Rhododendron petilum P.C.Tam; Survey Genus Rhododendron S. China 41, 101 (1983)
= Rhododendron simsii var. albiflorum R.L.Liu; Acta Bot. Yunnan. 15(2): 190 (1993)
= Rhododendron simsii var. bellum (W.P.Fang & G.Z.Li) G.Z.Li; Fl. Guangxi 3: 612 (2011)
= Rhododendron simsii var. mesembrinum Rehder; J. Arnold Arbor. 10: 18 (1928 publ. 1929)
= Rhododendron simsii var. strigosostylum G.Z.Li; Guihaia 15: 298 (1995)
= Rhododendron viburnifolium W.P.Fang; Acta Phytotax. Sin. 21(4): 469, pl. 2, f. 3 (1983)
= Rhododendron vittatum (Fortune) Planch.; Rev. Hort. (Paris), Sér. 4, 3: 66 (1854)
= Rhododendron vittatum var. punctatum Planch.; Fl. Serres 9: 82 (1854)
species :
Rhododendron simulans
J.J.Sm. ex Sleumer; Reinwardtia 5: 168 (1960)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron wrightianum var. ovalifolium J.J.Sm.; (1936) (p. p.)
species :
Rhododendron sinofalconeri
Balf.f.; Notes Roy. Bot. Gard. Edinburgh 9(44-45): 272-274 (1916)
Distribution: China (S-Yunnan); N-Vietnam
36 CHI 41 VIE
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Falconera
species :
Rhododendron sinogrande
Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 9(44-45): 274-278 (1916)
Distribution: China (W-Yunnan); SE-Tibet; NE-India (Arunachal Pradesh); NE-Myanmar (Kachin)
36 CHI TIB 40 IND 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Grandia
Synonyms: hidden
= Rhododendron sinogrande var. boreale Tagg & Forrest; Notes Roy. Bot. Gard. Edinburgh 15(72): 119-120 (1926)
species :
Rhododendron siobriense
Argent; Rhododendrons subgen. Vireya, ed. 2. 70 (2015)
Distribution: New Guinea (Irian Jaya)
42 NWG
species :
Rhododendron smirnowii
Trautv.; Trudy Imp. S.-Peterburgsk. Bot. Sada 9: 513 (1886); ex Regel in Gartenfl. 35: 377, t.1226. fig. 2 (1886)
Distribution: Georgia [Caucasus] (Adzharia); NE-Turkey
33 GEO 34 TUR
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Pontica
species :
Rhododendron smokianum
Ralf Bauer & Albach; Syst. Bot. 46(1): 126 (2021)
Distribution: USA (Tennessee)
78 USA
species :
Rhododendron sohayakiense
Y.Watan. & T.Yukawa; PhytoKeys 134: 105 (2019)
Distribution: Japan (Shikoku, Honshu)
38 JAP
variant :
var. kiusianum
Y.Watan., T.Yukawa & Minamit.; PhytoKeys 134: 108 (2019)
Distribution: Japan (Kyushu)
38 JAP
variant :
var. koreanum
Y.Watan. & T.Yukawa; PhytoKeys 134: 111 (2019)
Distribution: South Korea
38 KOR
species :
Rhododendron sojolense
Argent; Gard. Bull. Singapore 61(1): 2 (2009)
Distribution: Sulawesi
42 SUL
species :
Rhododendron solitarium
Sleumer; Blumea 12: 94 (1963)
Distribution: New Guinea (Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron sophistarum
Craven; Blumea 56(1): 35 (2011), nom. nov.
Distribution: China (NW-Sichuan, NW-Yunnan); Bhutan; N-India (Sikkim)
36 CHI 40 BHU IND
Synonyms: hidden
= Diplarche pauciflora Hook.f. & Thomson; Hooker´s J. Bot. Kew Gard. Misc. 6: 383 (1854)
species :
Rhododendron sororium
Sleumer; Blumea, Suppl. 4, 47 (1958)
Distribution: Vietnam
41 VIE
species :
Rhododendron souliei
Franch.; J. Bot. [Morot] 9(21): 393-394 (1895)
Distribution: China (SW-Sichuan); E-Tibet
36 CHI TIB
Remarks: Status doubtful, not listed in Fl. of China. Subgen. Hymenanthes, Sect. Pontica, subsect. Campylocarpa
Synonyms: hidden
= Rhododendron cordatum H.Lév.; Bull. Acad. Int. Geogr. Bot. 24(295-297): 282 (1914)
species :
Rhododendron spanotrichum
Balf.f. & W.W.Sm.; Trans. Bot. Soc. Edin. 27: 214 (1917)
Distribution: China (SE-Yunnan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Irrorata
species :
Rhododendron sparsifolium
W.P.Fang; Acta Phytotax. Sin. 21(4): 462-463, f. 7 (1983)
Distribution: China (S-Sichuan)
36 CHI
Synonyms: hidden
= Rhododendron hejiangense M.Y.He; Bull. Bot. Res., Harbin 5(4): 118-119 (1985)
species :
Rhododendron spathulatum
Ridl.; J. Straits Branch Roy. Asiat. Soc. 61: 25 (1912)
Distribution: peninsular Malaysia (Gunung Korbu, Perak, Gunung Siku, Pahang)
42 MLY
Remarks: Subgen. Rhododendron
species :
Rhododendron sperabile
Balf.f. & Farrer; Notes Roy. Bot. Gard. Edinburgh 13: 297 (1922)
Distribution: China (NW-Yunnan); NE-Myanmar (Kachin)
36 CHI 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Neriiflora
variant :
var. weihsiense
Tagg & Forrest; Notes Roy. Bot. Gard. Edinburgh 15(75): 319 (1927)
Distribution: China (NW-Yunnan)
36 CHI
species :
Rhododendron sperabiloides
Tagg & Forrest; Notes Roy. Bot. Gard. Edinburgh 15(75): 319-320 (1927)
Distribution: China (NW-Yunnan); SW-Tibet
36 CHI TIB
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Neriiflora
species :
Rhododendron sphaeroblastum
Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 60 (1920)
Distribution: China (SW-Sichuan, N-Yunnan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Taliensia
variant :
var. wumengense
K.M.Feng; Acta Bot. Yunnan. 5(3): 265-266 (1983)
Distribution: China (N-Yunnan)
36 CHI
species :
Rhododendron spiciferum
Franch.; J. Bot. [Morot] 9: 400 (1895)
Distribution: China (W-Guizhou, Yunnan)
36 CHI
Synonyms: hidden
= Rhododendron scabrifolium var. spiciferum (Franch.) Cullen; Notes Roy. Bot. Gard. Edinburgh 36(1): 110 (1978)
= Rhododendron spiciferum var. album K.M.Feng; Acta Bot. Yunnan. 4: 257 (1982)
species :
Rhododendron spilotum
Balf.f. & Farrer; Notes Roy. Bot. Gard. Edinburgh 13: 298 (1922)
Distribution: N-Myanmar (Kachin)
41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. unknown
species :
Rhododendron spinuliferum
Franch.; J. Bot. [Morot] 9: 398 (1895)
Distribution: China (SW-Sichuan, W-Yunnan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Scabrifolia
Synonyms: hidden
= Rhododendron fuchsiiflorum H.Lév.; Repert. Spec. Nov. Regni Veg. 12: 284 (1913), et Repert. Spec. Nov. Regni Veg. 13: 148 (1914)
variant :
var. glabrescens
K.M.Feng; Acta Bot. Yunnan. 4(3): 257 (1982)
Distribution: China (Yunnan)
36 CHI
species :
Rhododendron spondylophyllum
F.Muell.; Trans. Roy. Soc. Vict. N. S 1(2): 23 (1889)
Distribution: New Guinea (Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron cyatheicola Sleumer; Reinwardtia 5: 86 (1960)
species :
Rhododendron stamineum
Franch.; Bull. Soc. Bot. France 33: 236 (1886)
Distribution: China (Anhui, Guangdong, Guangxi, Guizhou, Hubei, Hunan, Jiangxi, Shanxi, Sichuan, Yunnan, Zhejiang); Myanmar
36 CHI 41 MYA
Remarks: Subgen. Azaleastrum, Sect. Choniastrum
Synonyms: hidden
= Azalea aucubifolia (Hemsl.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Azalea pittosporifolia (Hemsl.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Azalea staminea (Franch.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron aucubifolium Hemsl.; J. Linn. Soc., Bot. 26(173): 19 (1889)
= Rhododendron cavaleriei var. chaffanjonii H.Lév.; Bull. Soc. Agric. Sarthe 39: 49 (1914)
= Rhododendron chaffanjonii H.Lév. ex Hutch.; Stevenson, Spec. Rhododendron 623 (1930), pro syn.
= Rhododendron esquirolii H.Lév.; Repert. Spec. Nov. Regni Veg. 12: 102 (1913)
= Rhododendron pittosporifolium Hemsl.; J. Linn. Soc., Bot. 26(173): 29 (1889)
variant :
var. gaozhaiense
L.M.Gao; Acta Bot. Yunnan. 24: 611 (2002)
Distribution: China (Guangxi)
36 CHI
variant :
var. lasiocarpum
R.C.Fang & C.H.Yang; Acta Bot. Yunnan. 4(3): 256-257 (1982)
Distribution: China (SW-Sichuan, SE-Yunnan)
36 CHI
species :
Rhododendron stanleyi
S.A.James & Argent; Edinburgh J. Bot. 74(2): 163 (2017)
Distribution: New Guinea (Papua New Guinea)
42 NWG
species :
Rhododendron stapfianum
Hemsl. ex Prain; Bot. Mag. sub t. 8372 (1911)
Distribution: Borneo
42 BOR
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron lacteum Stapf; Trans. Linn. Soc. London Ser. 2, 4: 197 (1894)
species :
Rhododendron starlingii
Rushforth & N.T.T.Huong; Bot. Mag., n. s. 39(3): 467 (2022)
Distribution: Vietnam
41 VIE
species :
Rhododendron stelligerum
Sleumer; Blumea 11: 115 (1961)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron stenopetalum
(R.Hogg) Mabb.; Feddes Repert. 101(5-6): 270 (1990)
Name: Spider Azalea
Distribution: Japan (Honshu, Shikoku); Java [I]
38 JAP 42 jaw
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
Synonyms: hidden
= Azalea dianthiflora Carrière; Rev. Hort. (Paris) 61: 391 (1889)
= Azalea linearifolia (Siebold & Zucc.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Azalea macrosepala (Maxim.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Azalea stenopetala R.Hogg; Gard. Year Book 6: 39 (1865)
= Rhododendron burmanni f. dianthiflorum (Carrière) Nakai; Bot. Mag. (Tokyo) 37: 34 (1924)
= Rhododendron burmanni f. linearifolium (Hook.f.) Nakai; Nakai & G. Koidz., Trees Shrubs Japan 117 (1922)
= Rhododendron burmanni var. macrosepalum (Maxim.) Nakai; Nakai & G. Koidz., Trees Shrubs Japan 115 (1922)
= Rhododendron dianthiflorum (Carrière) Millais; Rhododendrons 155 (1917)
= Rhododendron hortense Nakai; Nakai & G. Koidz., Trees Shrubs Japan 112 (1922)
= Rhododendron linearifolium f. decandrum E.H.Wilson; Wils. & Rehd., Monogr. Azaleas 77 (1921)
= Rhododendron linearifolium f. dianthiflorum (Carrière) E.H.Wilson; Wils. & Rehd., Monogr. Azaleas 76 (1921)
= Rhododendron linearifolium Siebold & Zucc.; Abh. Math.-Phys. Cl. Königl. Bayer. Akad. Wiss. 4(3): 131 (1846) (non Poir. 1804)
= Rhododendron linearifolium var. macrosepalum (Maxim.) Makino; Bot. Mag. (Tokyo) 27: 108 (1913)
= Rhododendron macrosepalum f. albiflorum (Honda) H.Hara; Enum. Spermatophytarum Japon. 1: 40 (1948)
= Rhododendron macrosepalum Maxim.; Bull. Acad. Imp. Sci. Saint-Pétersbourg, Sér. 3, 15: 228 (1870)
= Rhododendron macrosepalum var. linearifolium (Hook.f.) Makino; Bot. Mag. (Tokyo) 22: 55 (1908)
species :
Rhododendron stenophyllum
Hook.f. ex Becc.; Malesia 1: 203 (1878); ex Stapf in Trans. Linn. Soc., Bot. Ser. 2, 4: 196 (1894)
subspecies :
subsp. stenophyllum
Distribution: Borneo
42 BOR
Remarks: Subgen. Rhododendron
subspecies :
subsp. angustifolium
(J.J.Sm.) Argent, A.Lamb & Phillipps; Notes Roy. Bot. Gard. Edinburgh 42(1): 115 (1984)
Distribution: Borneo
42 BOR
Synonyms: hidden
= Rhododendron stenophyllum var. angustifolium J.J.Sm.; Bull. Jard. Bot. Buitenzorg, Sér. 3, 13: 452 (1935)
species :
Rhododendron stevensianum
Sleumer; Blumea 21(2): 371 (1973)
Distribution: New Guinea (Papua New Guinea)
42 NWG
species :
Rhododendron stewartianum
Diels; Notes Roy. Bot. Gard. Edinburgh 5(25): 211-212 (1912)
Distribution: China (NW-Yunnan); E-Tibet; NE-India (Arunachal Pradesh); NW-Myanmar (Kachin)
36 CHI TIB 40 IND 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Thomsonia
Synonyms: hidden
= Rhododendron aiolosalpinx Balf.f. & Farrer; Notes Roy. Bot. Gard. Edinburgh 13: 227 (1922)
= Rhododendron nipholobum Balf.f. & Farrer; Notes Roy. Bot. Gard. Edinburgh 13: 277 (1922)
= Rhododendron stewartianum var. aiolosapinx (Balf.f. & Farrer) Cowan & Davidian; Rhododendron Year Book 6: 177 (1951)
= Rhododendron stewartianum var. tantulum Cowan & Davidian; Rhododendron Year Book 6: 177 (1951)
species :
Rhododendron stolleanum
Schltr.; Bot. Jahrb. Syst. 55: 143 (1917)
Distribution: New Guinea (Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron stresemannii
J.J.Sm.; Repert. Spec. Nov. Regni Veg. 30: 166 (1932)
Distribution: Moluccas (Seram)
42 MOL
Remarks: Subgen. Rhododendron
species :
Rhododendron strigillosum
Franch.; Bull. Soc. Bot. France 33: 232 (1886)
Distribution: China (SW-Sichuan, NE-Yunnan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Maculifera
species :
Rhododendron strigosum
R.L.Liu; Acta Phytotax. Sin. 39: 272 (2001)
Distribution: China (W-Jiangxi)
36 CHI
species :
Rhododendron suaveolens
Sleumer; Bot. Jahrb. Syst. 71: 147 (1940)
Distribution: Borneo
42 BOR
Remarks: Subgen. Rhododendron
species :
Rhododendron subansiriense
Chamb. & Cox; Notes Roy. Bot. Gard. Edinburgh 36(1): 124 (1978)
Distribution: NE-India (Arunachal Pradesh)
40 IND
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Thomsonia
species :
Rhododendron subcerinum
P.C.Tam; Bull. Bot. Res., Harbin 2(4): 88-89, f. 1 (1982)
Distribution: China (S-Guangdong)
36 CHI
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
species :
Rhododendron subcrenulatum
Sleumer; Reinwardtia 5: 174 (1960)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron subenerve
P.C.Tam; Survey Genus Rhododendron S. China 59, 108, f. 29 (1983)
Distribution: China (E-Guangxi)
36 CHI
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
species :
Rhododendron subestipitatum
Chun ex P.C.Tam; Bull. Bot. Res., Harbin 2(4): 90 (1982)
Distribution: China (Guangdong)
36 CHI
species :
Rhododendron subflumineum
P.C.Tam; Bull. Bot. Res., Harbin 2(1): 94-96, photo. 3 (1982)
Distribution: China (N-Guangdong, S-Hunan)
36 CHI
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
species :
Rhododendron subpacificum
Sleumer; Blumea 12: 105 (1963)
Distribution: Solomon Isl.
43 SOL
Remarks: Subgen. Rhododendron
species :
Rhododendron subroseum
Xiang Chen & Jia Y.Huang; Nordic J. Bot. 28(4): 496 (2010)
Distribution: China (Guizhou)
36 CHI
species :
Rhododendron subsessile
Rendle; J. Bot., 357 (1896)
Distribution: Philippines (Luzon)
42 PHI
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
Synonyms: hidden
= Azalea subsessilis (Rendle) H.F.Copel.; Amer. Midl. Naturalist 30: 597 (1943)
species :
Rhododendron subulatum
(Nakai) Harmaja; Ann. Bot. Fenn. 39(3): 183 (2002)
Distribution: Russian Far East (Amur, Kamchatka, Khabarovsk, Primorye, Sakhalin)
31 RFE
Synonyms: hidden
= Ledum palustre subsp. angustissimum Vorosch.; Byull. Moskovsk. Obshch. Isp. Prir., Otd. Biol. 83(5): 118 (1978)
= Ledum palustre var. subulatum Nakai; Bot. Mag. (Tokyo) 31: 102 (1917)
= Ledum subulatum (Nakai) A.P.Khokhr. & Mazurenko; Sosud. Rast. Sovet. Dal´nego Vostoka 5: 125 (1991)
species :
Rhododendron subuliferum
Sleumer; Reinwardtia 5: 171 (1960)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron subulosum
J.J.Sm. ex Sleumer; Reinwardtia 5: 143 (1960)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron succothii
Davidian; R. H. S. Rhododendron & Camellia Year Book 20: 103 (1965)
Distribution: Bhutan; NE-India (Arunachal Pradesh)
40 BHU IND
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Barbata
Synonyms: hidden
= Rhododendron nishiokae H.Hara; J. Jap. Bot. 45: 93 (1970)
species :
Rhododendron sugaui
Argent; Rhododendrons subgen. Vireya 201 (2006)
Distribution: Borneo (Sabah)
42 BOR
species :
Rhododendron sulfureum
Franch.; Bull. Soc Bot. Fr. 34: 283 (1887)
Distribution: China (NW-Yunnan, SW-Yunnan); SE-Tibet; Myanmar (Kachin)
36 CHI TIB 41 MYA
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Boothia
Synonyms: hidden
= Azalea sulfurea (Franch.) Kuntze; Revis. Gen. Pl. 2: 386 (1891)
= Rhododendron cerinum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13: 240 (1922)
= Rhododendron commodum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13: 252 (1922)
= Rhododendron theiochroum Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 9: 282 (1916)
species :
Rhododendron sumatranum
Merr.; Papers Mich. Acad. Sci. 19: 182 (1934); J. J. Sm. in Bull. Jard. Bot. Buitenz., Ser. 3, 13: 450 (1935)
Distribution: N-Sumatra
42 SUM
Remarks: Subgen. Rhododendron
species :
Rhododendron suoilenhense
D.F.Chamb., N.T.T.Huong & Rushforth; Bot. Mag., n. s. 36(4): 423 (2020)
Distribution: Vietnam
41 VIE
species :
Rhododendron superbum
Sleumer; Reinwardtia 5: 76 (1960)
subspecies :
subsp. superbum
Distribution: New Guinea (Irian Jaya, Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
subspecies :
subsp. ibele
Argent; Rhododendrons subgen. Vireya 103 (2006)
Distribution: New Guinea (Irian Jaya)
42 NWG
species :
Rhododendron sutchuenense
Franch.; J. Bot. [Morot] 9(21): 392 (1895)
Distribution: China (Chongqing, Gansu, Guangxi, Guizhou, NW-Hubei, NW-Hunan, S-Shaanxi)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Fortunea
species :
Rhododendron syringoideum
Sleumer; Blumea 12: 104 (1963)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron taggianum
Hutch.; Gard. Chron., Ser. 3, 87: 389 (1930); et in Spec. Rhododendron, 499 (1930); et ex Hutch. in Notes Bot. Gard. Edinb. 16: 178 (1931), latine
Distribution: China (Yunnan); ?SE-Tibet; NE-India (Arunachal Pradesh); Myanmar (Kachin)
36 CHI 40 IND 41 MYA
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Maddenia
Synonyms: hidden
= Rhododendron headfortianum Hutch.; Bot. Mag. 158: t. 9614 (1942)
species :
Rhododendron taibaiense
Ching & H.P.Yang; Bull. Bot. Res. North-East. Forest. Inst. 3(2): 88 (1983)
Distribution: China (C-Shaanxi)
36 CHI
species :
Rhododendron taiense
Hutch.; Bull. Misc. Inform. Kew 1938: 24 (1938)
Distribution: peninsular Thailand
41 THA
Remarks: Subgen. Azaleastrum, Sect. Choniastrum
species :
Rhododendron taipaoense
T.C.Wu & P.C.Tam; Med. Mat. Guangdong 4: 36, f. 5 (1978)
Distribution: China (Fujian, Guangdong)
36 CHI
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
Synonyms: hidden
= Rhododendron apricum P.C.Tam; Bull. Bot. Res., Harbin 2(4): 79-80, photo. 1 (1982)
= Rhododendron apricum var. falcinellum P.C.Tam; Bull. Bot. Res., Harbin 2(4): 80 (1982)
= Rhododendron falcinellum P.C.Tam; Survey Genus Rhododendron S. China 36, 98, f. 23, 2 (1983)
= Rhododendron florulentum P.C.Tam; Bull. Bot. Res., Harbin 2(4): 80-81, photo. 2 (1982)
= Rhododendron hepaticum P.C.Tam; Survey Genus Rhododendron S. China 39, 98, f. 3 (1983)
= Rhododendron piceum P.C.Tam; Bull. Bot. Res., Harbin 2(4): 83-84 (1982)
= Rhododendron rufescens P.C.Tam; Bull. Bot. Res., Harbin 2(4): 86-87 (1982) (not Franch. (1895)
= Rhododendron rufulum P.C.Tam; Survey Genus Rhododendron S. China 38, 100, f. 24 (1983)
= Rhododendron spadiceum P.C.Tam; Bull. Bot. Res., Harbin 2(4): 87 (1982)
species :
Rhododendron taishunense
B.Y.Ding & Y.Y.Fang; Bull. Bot. Res., Harbin 7(2): 27-28, f. 1 (1987)
Distribution: China (S-Zhejiang)
36 CHI
species :
Rhododendron taiwanalpinum
Ohwi; J. Jap. Bot. 13: 339 (1937)
Distribution: Taiwan
38 TAI
Synonyms: hidden
= Rhododendron rubropilosum var. taiwanalpinum (Ohwi) S.S.Ying; Coloured Ill. Fl. Taiwan 5: 130 (1995)
= Rhododendron rubropilosum var. taiwanalpinum (Ohwi) S.Y.Lu, Yuen P.Yang & Y.H.Tseng; Fl. Taiwan, ed. 2,4: 32 (1998), isonym
species :
Rhododendron takeuchii
Argent; Folia Malaysiana 4(2): 117 (2003)
Distribution: Bismarck Arch.
43 BIS
species :
Rhododendron taliense
Franch.; Bull. Soc. Bot. France 33: 232 (1886)
Distribution: China (W-Sichuan, W-Yunnan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Taliensia
Synonyms: hidden
= Azalea taliensis (Franch.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
species :
Rhododendron tanastylum
Balf.f. & Kingdon-Ward; Trans. Bot. Soc. Edinburgh 27(2): 217-220 (1917)
Distribution: China (W-Yunnan); NE-India (Arunachal Pradesh); NE-Myanmar (Kachin); Vietnam
36 CHI 40 IND 41 MYA VIE
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Irrorata
Synonyms: hidden
= Rhododendron cerochitum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13: 36 (1920)
= Rhododendron ombrochares Balf.f. & Kingdon-Ward; Notes Roy. Bot. Gard. Edinburgh 13: 280 (1922)
= Rhododendron petelotii Dop; Fl. Indo-Chine [P.H.Lecomte et al.] 3: 733 (1930)
variant :
var. lingzhiense
M.Y.Fang; Fl. Reipubl. Popularis Sin. 57(2): 120 (1995)
Distribution: E-Tibet
36 TIB
Synonyms: hidden
= Rhododendron rubropunctatum T.L.Ming; Acta Bot. Yunnan. 6(2): 150-151, f. 2 (1984) (not H. Lév. & Vaniot (1911), nor Hayata (1913)
species :
Rhododendron tapetiforme
Balf.f. & Kingdon-Ward; Notes Roy. Bot. Gard. Edinburgh 9: 279 (1916)
Distribution: China (NW-Yunnan); SE-Tibet; NE-Myanmar
36 CHI TIB 41 MYA
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Lapponica
species :
Rhododendron taronense
Hutch.; Spec. Rhododendron, 480 (1930), et Notes Bot. Gard. Edinb. 16: 178 (1931), latine
Distribution: China (W-Yunnan); Myanmar (Kachin)
36 CHI 41 MYA
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Maddenia. Status doubtful, possibly a synonym of R. dendricola
species :
Rhododendron tashiroi
Maxim.; Bull. Acad. Imp. Sci. Saint-Petersbourg 31(1): 64 (1886)
Distribution: Japan (Shikoku, Kyushu); Ryukyu Isl.; SW-Taiwan
38 JAP NNS TAI
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
Synonyms: hidden
= Azalea tashiroi (Maxim.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Azalea tashiroi (Maxim.) H.F.Copel.; Amer. Midl. Naturalist 30: 597 (1943)
= Rhododendron tashiroi f. album Hatus. ex Minamit.; J. Jap. Bot. 94: 207 (2019)
variant :
var. lasiophyllum
Hatus. ex T.Yamaz.; Fl. Japan, 3a: 31 (1993)
Distribution: Japan (Kyushu)
38 JAP
species :
Rhododendron tatsienense
Franch.; J. Bot. [Morot] 9: 394 (1895)
Distribution: China (N-Sichuan, SW-Sichuan, NW-Yunnan, NE-Yunnan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Triflora
Synonyms: hidden
= Rhododendron heishuiense W.P.Fang; Acta Phytotax. Sin. 2: 83 (1952)
= Rhododendron hypophaeum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 12: 120 (1920)
= Rhododendron kangdingense Z.J.Zhao; Bull. Bot. Res. North-East. Forest. Inst. 7(3): 61 (1987)
= Rhododendron leilungense Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13: 273 (1922)
= Rhododendron stereophyllum Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 10: 159 (1917)
= Rhododendron tapelouense H.Lév.; Bull. Acad. Int. Géogr. Bot. 25: 20 (1915)
variant :
var. nudatum
R.C.Fang; Acta Bot. Yunnan. 4(3): 256 (1982)
Distribution: China (NW-Yunnan)
36 CHI
species :
Rhododendron taxifolium
Merr.; Philipp. J. Sci. 30: 419 (1926)
Distribution: Philippines (Luzon)
42 PHI
Remarks: Subgen. Rhododendron
species :
Rhododendron taxoides
J.J.Sm.; Nova Guinea 18: 92 (1936)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron telmateium
Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 9: 280 (1916)
Distribution: China (W-Sichuan, SW-Sichuan, Yunnan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Lapponica
Synonyms: hidden
= Rhododendron diacritum Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 9: 225 (1916)
= Rhododendron drumonium Balf.f. & Kingdon-Ward; Notes Roy. Bot. Gard. Edinburgh 9: 226 (1916)
= Rhododendron idoneum Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 9: 237 (1916)
= Rhododendron pycnocladum Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 9: 267 (1916)
species :
Rhododendron temenium
Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 11(52-53): 146-148 (1919)
Distribution: China (NW-Yunnan); SE-Tibet
36 CHI TIB
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Neriiflora
Synonyms: hidden
= Rhododendron eudoxum subsp. pothinum (Balf.f. & Forrest) Tagg; Spec. Rhododendron 539 (1930)
= Rhododendron eudoxum subsp. temenium (Balf.f. & Forrest) Tagg; Spec. Rhododendron 549 (1930)
= Rhododendron pothinum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 12: 147 (1920)
= Rhododendron temenium subsp. pothinum (Balf.f. & Forrest) Cowan; Notes Roy. Bot. Gard. Edinburgh 20(97): 81 (1940)
variant :
var. dealbatum
(Cowan) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 37(2): 334-335 (1979)
Distribution: China (NW-Yunnan); SE-Tibet
36 CHI TIB
Synonyms: hidden
= Rhododendron eudoxum subsp. glaphyrum (Balf.f. & Forrest) Tagg; Spec. Rhododendron 549 (1930)
= Rhododendron glaphyrum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 45-46 (1920)
= Rhododendron glaphyrum var. dealbatum (Cowan) Davidian; Rhododendron Species, 3 (Ser. Neriiflorum-Thomsonii, etc.): 121 (1992)
= Rhododendron temenium subsp. dealbatum Cowan; Notes Roy. Bot. Gard. Edinburgh 20(97): 83 (1940)
= Rhododendron temenium subsp. glaphyrum (Balf.f. & Forrest) Cowan; Notes Roy. Bot. Gard. Edinburgh 20(97): 82 (1940)
variant :
var. gilvum
(Cowan) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 37(2): 334 (1979), et Rhododendron Species, 3 (Ser. Neriiflorum-Thomsonii, etc.): 120 (1992)
Distribution: China (NW-Yunnan); SE-Tibet
36 CHI TIB
Synonyms: hidden
= Rhododendron fulvastrum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13: 45 (1920)
= Rhododendron fulvastrum var. gilvum (Cowan) Davidian; Rhododendron Species 3: 120 (1992)
= Rhododendron temenium subsp. chrysanthemum Cowan; Notes Roy. Bot. Gard. Edinburgh 20(97): 82-83 (1940)
= Rhododendron temenium subsp. gilvum Cowan; Notes Roy. Bot. Gard. Edinburgh 20(97): 82 (1940)
species :
Rhododendron tenuifolium
R.C.Fang & S.H.Huang; Fl. Xizang. 3: 647 (1986)
Distribution: S-Tibet
36 TIB
species :
Rhododendron tenuilaminare
P.C.Tam; Survey Genus Rhododendron S. China 48, 102, f. 25 (1983)
Distribution: China (Guangdong)
36 CHI
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
species :
Rhododendron tephropeploides
R.A.Baines & D.F.Chamb.; Edinburgh J. Bot. 78-363: 2 (2021)
Distribution: Vietnam
41 VIE
species :
Rhododendron tephropeplum
Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13: 302 (1922)
Distribution: China (NW-Yunnan); SE-Tibet; NE-India (Arunachal Pradesh); Myanmar (Kachin); Vietnam
36 CHI TIB 40 IND 41 MYA VIE
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Tephropepla
Synonyms: hidden
= Rhododendron deleiense Hutch. & Kingdon-Ward; Spec. Rhododendron, 163 (1930), et Notes Bot. Gard. Edinb. 16: 172 (1931), latine
= Rhododendron spodopeplum Balf.f. & Farrer; Notes Roy. Bot. Gard. Edinburgh 13: 299 (1922)
species :
Rhododendron tetramerum
(Makino) Nakai; Bull. Nat. Sci. Mus., Tokyo, No. 31, 82 (1952)
Distribution: Japan
38 JAP
Synonyms: hidden
= Rhododendron tschonoskii f. tetramerum (Makino) Komatsu; Bot. Mag. (Tokyo) 32 (15) (1918)
= Rhododendron tschonoskii var. tetramerum (Makino) Komatsu; Bot. Mag. (Tokyo) 32: (15) (1918)
species :
Rhododendron thaumasianthum
Sleumer; Blumea 12: 98 (1963)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron magnificum Sleumer; Reinwardtia 5: 84 (1960), nom. illeg.
species :
Rhododendron thayerianum
Rehder & E.H.Wilson; Pl. Wilson. [Sargent] 1(3): 529 (1913)
Distribution: China (W-Sichuan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Argyrophylla
species :
Rhododendron thomsonii
Hook.f.; Rhododendron Sikkim Himalaya t. 12 (1849)
subspecies :
subsp. thomsonii
Distribution: S-Tibet; Nepal; Bhutan; NE-India (Sikkim, Arunachal Pradesh); Myanmar (Kachin)
36 TIB 40 BHU IND NEP 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Thomsonia
Synonyms: hidden
= Azalea thomsonii (Hook.f.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron thomsonii var. floccosum C.B.Clarke; Hook.f., Fl. Brit. India [J. D. Hooker] 3: 468 (1882)
subspecies :
subsp. lopsangianum
(Cowan) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 39: 420, Map 131 (1982)
Distribution: Tibet; NE-India (Arunachal Pradesh)
36 TIB 40 IND
Synonyms: hidden
= Rhododendron lopsangianum Cowan; Notes Roy. Bot. Gard. Edinburgh 19(94): 250-251 (1937)
= Rhododendron thomsonii var. lopsangianum (Cowan) T.L.Ming; Acta Bot. Yunnan. 6(2): 160 (1984)
species :
Rhododendron thymifolium
Maxim.; Bull. Acad. Petersb. 23: 851 (1877)
Distribution: China (Gansu, Qinghai, N-Sichuan, NW-Sichuan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Lapponica
Synonyms: hidden
= Azalea thymifolia (Maxim.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron polifolium Franch.; J. Bot. [Morot] 9: 397 (1895), nom. illeg.
= Rhododendron spilanthum Hutch.; Rhododendron Soc. Notes 3(5): 287 (1929-1931 publ. 1932)
species :
Rhododendron tianlinense
P.C.Tam; Guihaia 3(3): 181 (1983)
Distribution: China (NW-Guangxi, ?SE-Guizhou)
36 CHI
species :
Rhododendron tianmenshanense
C.L.Peng & L.H.Yan; Acta Phytotax. Sin. 45(3): 304 (2007)
Distribution: China (Hunan)
36 CHI
species :
Rhododendron tingwuense
P.C.Tam; Med. Mat. Guangdong 4: 36, f. 6 (1978)
Distribution: China (Guangdong)
36 CHI
Synonyms: hidden
= Rhododendron huiyangense W.P.Fang & M.Y.He; Bull. Bot. Res., Harbin 3(1): 4 (1983)
= Rhododendron tsoi var. huiyangense (W.P.Fang & M.Y.He) X.F.Jin & B.Y.Ding; Taxon. Study Rhododendron subgen. Tsutsusi 203 (2009)
species :
Rhododendron tintinnabellum
Danet; Adansonia 27(2): 268 (2005)
Distribution: New Guinea (Irian Jaya)
42 NWG
species :
Rhododendron titapuriense
A.A.Mao, K.N.E.Cox & D.F.Chamb.; Plantsman 12(1): 27 (2013)
Distribution: NE-India (Arunachal Pradesh)
40 IND
species :
Rhododendron tjiasmantoi
Mustaqim, Mambrasar & Hutabarat; Taiwania 67(1): 124 (2022)
Distribution: Sulawesi
42 SUL
species :
Rhododendron tolmachevii
Harmaja; Ann. Bot. Fenn. 27(2): 204 (1990) (nom. nov.)
Distribution: Russian Far East (Amur, Magadan, Sakhalin)
31 RFE
Synonyms: hidden
= Ledum palustre var. macrophyllum (Tolm.) Kitag.; Neolin. Fl. Manshur. 498 (1979)
= Ledum macrophyllum Tolm.; Bot. Mater. Gerb. Bot. Inst. Komarova Akad. Nauk S.S.S.R. 15: 203 (1953)
species :
Rhododendron tomentosum
(Stokes) Harmaja; Ann. Bot. Fenn. 27(2): 204 (1990), nom. nov.
Name: Marsh Labrador tea (EN), Sumpf-Porst (DE)
Distribution: England [I]; Norway; Sweden; Finland; Germany (Brandenburg, Berlin, +Baden-Württemberg, Bayern, +Hamburg, Mecklenburg-Vorpommern, Niedersachsen, Schleswig-Holstein, Sachsen, Sachsen-Anhalt, Thüringen); Austria; Poland; Czech Republic; Slovakia; +Romania; Estonia; Latvia; Lithuania; Belarus; C-European Russia; N-European Russia; W-European Russia; Ukraine; Siberia (Altai, Buryatia, Chita, Irkutsk, Krasnoyarsk, Tuva, W-Siberia, Yakutia); Russian Far East (Amur, Kamchatka, Khabarovsk, Kuril Isl., Magadan, Primorye, Sakhalin); Kazakhstan; China (Heilongjiang, Nei Mongol, Jilin); Mongolia; North Korea; Alaska; Greenland; Canada (Alberta, British Columbia, Labrador, Manitoba, Northern Territories, Nunavut, Ontario, Québec, Saskatchewan, Yukon)
10 FIN grb NOR SWE 11 AUT CZE GER POL SLO 13 ROM 14 BLR EST LAT LIT RUS UKR 30 SIB 31 RFE 32 KAZ 36 CHI 37 MON 38 NKO 70 ASK CDN GNL 71 CDN 72 CDN
Synonyms: hidden
= Ledum decumbens (Aiton) Lodd. ex Steud.; Nomencl. Bot. [Steudel], ed. 2, 2: 20 (1840)
= Ledum dilatatum Rupr.; Beitr. Pfl. Russ. Reich. 4: 57 (1845)
= Ledum graveolens Gilib.; Fl. Lit. Inch. 2: 199 (1782), opus utique oppr.
= Ledum groenlandicum f. denudatum Vict. & J.Rousseau; Contr. Inst. Bot. Univ. Montréal 36: 44 (1940)
= Ledum maximum (Nakai) A.P.Khokhr. & Mazurenko; Sosud. Rast. Sovet. Dal´nego Vostoka 5: 122 (1991)
= Ledum palustre f. decumbens (Aiton) Y.L.Chou & S.L.Tung; Y. L. Chou Ligneous Fl. Heilongjiang 463 (1986)
= Ledum palustre f. denudatum (Vict. & J.Rousseau) B.Boivin; Naturaliste Canad. 93: 433 (1966)
= Ledum palustre f. parvifolium Maack; Vilyuisk. Okruge Fakutsk. Obl. 2: 283 (1886)
= Ledum palustre L.; Sp. Pl. [Linnaeus] 391 (1753)
= Ledum palustre subsp. decumbens (Aiton) Hultén; Kungl. Svenska Vetenskapsakad. Handl., Ser. 3, 8(2): 8 (1930)
= Ledum palustre subsp. longifolium (Freyn) Kitag.; Neolin. Fl. Manshur. 498 (1979)
= Ledum palustre var. angustifolium Hook.; Fl. Bor.-Amer. 2: 44 (1834)
= Ledum palustre var. angustum N.Busch; Fl. Sibir. Orient. Extremi 2: 8 (1915)
= Ledum palustre var. decumbens Aiton; Hort. Kew 2: 65 (1789)
= Ledum palustre var. dilatatum Wahlenb.; Fl. Lapponica 103 (1812)
= Ledum palustre var. maximum Nakai; Bot. Mag. (Tokyo) 31: 103 (1917)
= Ledum palustre var. minus Nakai; Nakai & G. Koidz., Trees Shrubs Japan, rev. ed. 19 (1927)
= Ledum palustre var. thymifolium Burgsd.; 129 (1787), nom. inval.
= Ledum palustriforme A.P.Khokhr. & Mazurenko; Sosud. Rast. Sovet. Dal´nego Vostoka 5: 126 (1991)
= Ledum tomentosum Stokes; Bot. Mat. Med. 2: 502 (1812), nom. illeg.
= Rhododendron palustre (L.) Kron & Judd; Syst. Bot. 15(1): 67 (1990) non Rhododendron palustre Turcz. ex DC. (1839)
= Rhododendron subarcticum Harmaja; Ann. Bot. Fenn. 27(2): 203 (1990) (nom. nov.)
= Rhododendron tomentosum subsp. decumbens (Aiton) Elven & D.F.Murray; J. Bot. Res. Inst. Texas 2(1): 441 (2008)
= Rhododendron tomentosum subsp. subarcticum (Harmaja) G.D.Wallace; Madroño 39: 77 (1992), nom. superfl.
= Rhododendron ×palustriforme (A.P.Khokhr. & Mazurenko) Barkalov; Botanica Pacifica 12(2): 123 (2023)
species :
Rhododendron torajaense
Craven; J. Adelaide Bot. Gard. 27(4): 30 (2014)
Distribution: Sulawesi
42 SUL
species :
Rhododendron torquescens
D.F.Chamb.; Fl. of China 14: 389 (2005)
Distribution: China (S-Gansu)
36 CHI
Synonyms: hidden
= Rhododendron torquatum L.C.Hu; Acta Phytotax. Sin. 30(6): 547-549, f. 5: 1-3 (1992) (non Balf.f. & Farrer 1922)
species :
Rhododendron tosaense
Makino; Tokyo Bot. Mag. 6: 53 (1892)
Distribution: Japan (Honshu, Shikoku, Kyushu)
38 JAP
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
Synonyms: hidden
= Rhododendron miyazawae Nakai & H.Hara; J. Jap. Bot. 11: 825 (1935)
= Rhododendron obtusum var. tosaense (Makino) Kitam.; Acta Phytotax. Geobot. 25: 37 (1972)
= Rhododendron tosaense f. albiflorum T.Yamaz.; Fl. Japan 3a: 28 (1993)
= Rhododendron tosaense f. duplex T.Yamaz.; Fl. Japan 3a: 28 (1993)
species :
Rhododendron toxopei
J.J.Sm.; Repert. Spec. Nov. Regni Veg. 30: 168 (1932)
Distribution: Moluccas (Buru Isl.)
42 MOL
Remarks: Subgen. Rhododendron
species :
Rhododendron traillianum
Forrest & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 8(38): 204-205 (1914)
Distribution: China (NW-Yunnan, SW-Sichuan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Taliensia
Synonyms: hidden
= Rhododendron aberrans Tagg & Forrest; Notes Roy. Bot. Gard. Edinburgh 15(75): 305-306 (1927)
variant :
var. dictyotum
(Balf.f. ex Tagg in Tagg & Forrest) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 36(1): 120 (1978)
Distribution: China (NW-Yunnan); SE-Tibet
36 CHI TIB
Synonyms: hidden
= Rhododendron dictyotum Balf.f. ex Tagg in Tagg & Forrest; Notes Roy. Bot. Gard. Edinburgh 15(75): 309-310 (1927)
species :
Rhododendron trancongii
Argent & Rushforth; Rhododendrons Camellias Magnolias 61: 103 (2010)
Distribution: Vietnam
41 VIE
species :
Rhododendron trichanthum
Rehder; J. Arnold Arbor. 26: 480 (1945)
Distribution: China (W-Sichuan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Triflora
Synonyms: hidden
= Rhododendron villosum Hemsl. & E.H.Wilson; Bull. Misc. Inform. Kew 1910: 119 (1910) (not Roth (1807)
species :
Rhododendron trichocladum
Franch.; Bull. Soc. Bot. Fr. 33: 234 (1886)
Distribution: China (NW-Yunnan, SW-Yunnan, C-Yunnan); N-Myanmar (Kachin)
36 CHI 41 MYA
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Trichoclada
Synonyms: hidden
= Azalea trichoclada (Franch.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron brachystylum Balf.f. & Kingdon-Ward; Notes Roy. Bot. Gard. Edinburgh 13: 236 (1922)
= Rhododendron lithophilum Balf.f. & Kingdon-Ward; Notes Roy. Bot. Gard. Edinburgh 13: 275 (1922)
= Rhododendron lophogynum Balf.f. ex Hutch.; Stevenson, Spec. Rhododendron 411 (1930)
= Rhododendron oulotrichum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13: 281 (1922)
= Rhododendron xanthinum Balf.f. & W.W.Sm.; Trans. Bot. Soc. Edinburgh 27: 87 (1916)
species :
Rhododendron trichogynum
L.C.Hu; Acta Phytotax. Sin. 30(6): 545, f. 3 (1992)
Distribution: China (NW-Sichuan)
36 CHI
species :
Rhododendron trichostomum
Franch.; J. Bot. [Morot] 9: 396 (1895)
Distribution: China (S-Qinghai, W-Sichuan. NW-Yunnan); SE-Tibet
36 CHI TIB
Remarks: Subgen. Rhododendron, Sect. Pogonanthum
Synonyms: hidden
= Rhododendron fragrans Franch.; Bull. Soc Bot, Fr. 34: 284 (1887)
= Rhododendron hedyosmum Balf.f.; Notes Roy. Bot. Gard. Edinburgh 9: 234 (1916)
= Rhododendron sphaeranthum Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 9: 278 (1916)
variant :
var. ledoides
(Balf.f. & W.W.Sm.) Cowan & Davidian; Rhodod. Yearbook 2: 84 (1947)
Distribution: China (SW-Sichuan, NW-Yunnan)
36 CHI
Synonyms: hidden
= Rhododendron ledoides Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 9: 213 (1916)
variant :
var. radinum
(Balf.f. & W.W.Sm.) Cowan & Davidian; Rhodod. Yearbook 2: 84 (1947)
Distribution: China (SW-Sichuan, NW-Yunnan)
36 CHI
Synonyms: hidden
= Rhododendron radinum Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 9: 268 (1916)
species :
Rhododendron triflorum
Hook.f.; Rhod. Sikkim-Himal. t. 19 (1849)
subspecies :
subsp. triflorum
Distribution: S-Tibet; Nepal; Bhutan; N-India (Arunachal Pradesh, Darjeeling, Chumbi, Sikkim, Nagaland, Manipur); Myanmar (Kachin)
36 TIB 40 BHU IND NEP 41 MYA
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Triflora
Synonyms: hidden
= Azalea triflora (Hook.f.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron bauhiniiflorum Watt ex Hutch.; Stevenson, Spec. Rhododendron 785 (1930)
= Rhododendron deflexum Griff.; Not. Pl. Asiat. 4: 303 (1854)
= Rhododendron triflorum var. bauhiniiflorum (Watt ex Hutch.) Cullen; Notes Roy. Bot. Gard. Edinburgh 36: 109 (1978)
subspecies :
subsp. multiflorum
R.C.Fang; Acta Bot. Yunnan. 4(3): 254 (1982)
Distribution: China (WC-Yunnan)
36 CHI
species :
Rhododendron trilectorum
Cowan; Notes Roy. Bot. Gard. Edinburgh 20(3): 144-145 (1953)
Distribution: SE-Tibet; NE-India (Arunachal Pradesh, Sikkim, West Bengal)
36 TIB 40 IND
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Neriiflora
species :
Rhododendron trinerve
Franch. ex Boissieu; Bull. Herb. Boiss. 5: 920 (1897)
Distribution: Japan (Honshu)
38 JAP
Synonyms: hidden
= Rhododendron tschonoskii f. tetramerum Makino; Bot. Mag. (Tokyo) 18: 66 (1904)
= Rhododendron tschonoskii subsp. trinerve (Franch. ex H.Boissieu) Kitam.; Coloured Ill. Woody Pl. Jap. 1: 68 (1971)
= Rhododendron tschonoskii var. trinerve (Franch. ex H.Boissieu) Makino; Bot. Mag. (Tokyo) 18: 66 (1904)
species :
Rhododendron triumphans
Yersin & A.Chev.; A. Chev. Cat. Pl. Jard. Bot. Saigon., 30 (1919), nomen, et Rev. Bot. Appliq. 9: 256 (1929), descr.
Distribution: C-Vietnam
41 VIE
Remarks: Subgen. Rhododendron
species :
Rhododendron truncatovarium
L.M.Gao & D.Z.Li; Edinburgh J. Bot. 61: 1 (2004)
Distribution: China (Guangxi, SE-Yunnan)
36 CHI
species :
Rhododendron truncicola
Sleumer; Reinwardtia 5: 91 (1960)
Distribution: New Guinea (Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron tsaii
W.P.Fang; Contr. Biol. Lab. Sci. Soc. China, Bot. Ser. 12: 66 (1939)
Distribution: China (E-Yunnan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Lapponica
species :
Rhododendron tsariense
Cowan; Notes Roy. Bot. Gard. Edinburgh 19(94): 232-233 (1937)
Distribution: S-Tibet; E-Bhutan; NE-India (Arunachal Pradesh)
36 TIB 40 BHU IND
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Lanata
variant :
var. magnum
Davidian; Rhododendron Species, 2 (Ser. Arboreum-Lacteum): 308, 157 (1989)
Distribution: Bhutan
40 BHU
variant :
var. trimoense
Davidian; Rhododendron Species, 2 (Ser. Arboreum-Lacteum): 308, 157 (1989)
Distribution: S-Tibet
36 TIB
species :
Rhododendron tschonoskii
Maxim.; Bull. Acad. Petersb. 15: 230 (1871)
Distribution: Russian Far East (Kuril Isl., Sakhalin); South Korea; Japan (Hokkaido, Honshu, Shikoku, Kyushu)
31 RFE 38 JAP KOR
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
Synonyms: hidden
= Azalea tschonoskii (Maxim.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron tschonoskii f. pentamerum Makino; Bot. Mag. (Tokyo) 18: 66 (1904)
= Rhododendron tschonoskii f. roseotinctum Kurash., N.Kobay. & T.Yukawa; Ann. Tsukuba Bot. Gard. 19: 6 (2000)
= Rhododendron tschonoskii f. roseum Sugim.; New Keys Woody Pl. Jap. 384 (1972)
species :
Rhododendron tsinlingense
W.P.Fang ex J.Q.Fu; K. T. Fu & J. Q. Fu, Fl. Tsinling. 1(4): 393 (1983)
Distribution: China (SW-Shaanxi)
36 CHI
species :
Rhododendron tsoi
Merr.; Lingnan Sci. J. 13(1): 42 (1934)
Distribution: China (Guangdong, Guangxi)
36 CHI
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
variant :
var. hypoblematosum
(P.C.Tam) X.F.Jin & B.Y.Ding; Taxon. Study Rhododendron subgen. Tsutsusi 200 (2009)
Distribution: China (SW-Jiangxi)
36 CHI
Synonyms: hidden
= Rhododendron hypoblematosum P.C.Tam; Bull. Bot. Res., Harbin 2(1): 90-92, photo. 2 (1982)
variant :
var. nudistylum
(P.C.Tam) X.F.Jin & B.Y.Ding; Taxon. Study Rhododendron subgen. Tsutsusi 202 (2009)
Distribution: China (E-Guangxi)
36 CHI
Synonyms: hidden
= Rhododendron subenerve var. nudistylum P.C.Tam; Survey Genus Rhododendron S. China 108, 60 (1983)
variant :
var. polyraphidoideum
(P.C.Tam) X.F.Jin & B.Y.Ding; Taxon. Study Rhododendron subgen. Tsutsusi 203 (2009)
Distribution: China (N-Fujian, W-Guangdong, Guangxi, S-Hunan)
36 CHI
Synonyms: hidden
= Rhododendron polyraphidoideum P.C.Tam; Bull. Bot. Res., Harbin 2(4): 84-85, f. 4 (1982)
= Rhododendron polyraphidoideum var. montanum P.C.Tam; Bull. Bot. Res., Harbin 2(4): 85-86 (1982)
species :
Rhododendron tsurugisanense
(Yamaz.) T.Yamaz.; J. Jap. Bot. 66(2): 125 (1991)
Distribution: Japan (Shikoku)
38 JAP
Remarks: Subgen. Tsutsusi, Sect. Brachycalyx
Synonyms: hidden
= Rhododendron lagopus var. tokushimense (T.Yamaz.) T.Yamaz.; J. Jap. Bot. 63(12): 410 (1988)
= Rhododendron lagopus var. tsurugisanense (T.Yamaz.) T.Yamaz.; J. Jap. Bot. 63(12): 410 (1988)
= Rhododendron nudipes var. tokushimense T.Yamaz.; J. Jap. Bot. 56(11): 364 (1981)
= Rhododendron nudipes var. tsurugisanense T.Yamaz.; J. Jap. Bot. 59(7): 210 (1984)
variant :
var. nudipetiolatum
T.Yamaz.; J. Jap. Bot. 66(2): 125 (1991)
Distribution: Japan (Shikoku)
38 JAP
species :
Rhododendron tsusiophyllum
Sugim.; J. Jap. Bot. 31: 64 (1956)
Distribution: Japan (Honshu)
38 JAP
Synonyms: hidden
= Rhododendron tanakae (Maxim.) Ohwi; Bull. Natl. Sci. Mus. Tokyo 33: 81 (1953), nom. illeg.
= Tsusiophyllum tanakae Maxim.; Mém. Acad. Imp. Sci. Saint Pétersbourg, Sér. 7, 16(9): 12 (1871)
species :
Rhododendron tuba
Sleumer; Reinwardtia 5: 125 (1960)
Distribution: New Guinea (Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron tuberculiferum
J.J.Sm.; Meded. Herb. Leid. No. 25, 4 (1915)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron tubiforme
(Cowan & Davidian) Davidian; J. Amer. Rhododendron Soc. 36: 15 (1982)
Distribution: SE-Tibet; Bhutan; NE-India (Arunachal Pradesh)
36 TIB 40 BHU IND
Synonyms: hidden
= Rhododendron glaucophyllum subsp. tubiforme (Cowan & Davidian) D.G.Long; Notes Roy. Bot. Gard. Edinburgh 45(2): 330 (1988 publ. 1989)
= Rhododendron glaucophyllum var. tubiforme Cowan & Davidian; Rhododendron Year Book 3: 86 (1948)
species :
Rhododendron tubulosum
Ching ex W.Y.Wang; Acta Phytotax. Sin. 20(1): 57 (1982), nom. illeg., non Reinw.
Distribution: China (SE-Qinghai)
36 CHI
species :
Rhododendron tuhanense
Argent & T.J.Barkman; New Plantsman 7(4): 215 (2000)
Distribution: Borneo (Sabah)
42 BOR
species :
Rhododendron tutcherae
Hemsl. & E.H.Wilson; Bull. Misc. Inform. Kew 1910(4): 116-117 (1910)
Distribution: China (SE-Yunnan)
36 CHI
Remarks: Subgen. Azaleastrum, Sect. Choniastrum
variant :
var. gymnocarpum
A.L.Chang ex R.C.Fang; Acta Bot. Yunnan. 4(3): 257 (1982)
Distribution: China (SE-Yunnan)
36 CHI
variant :
var. glabrifolium
L.M.Gao & D.Z.Li; Acta Bot. Yunnan. 23: 293 (2001)
Distribution: China (S-Yunnan); N-Vietnam
36 CHI 41 VIE
species :
Rhododendron ultimum
Wernham; Trans. Linn. Soc. London, Bot. 9: 99 (1916)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron unciferum
P.C.Tam; Guihaia 2(2): 73, f. 5 (1982)
Distribution: China (S-Guangxi)
36 CHI
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
species :
Rhododendron ungeonticum
A.P.Khokhr. & Mazurenko; Byull. Glavn. Bot. Sada (Moscow), 172: 24 (1995)
Distribution: Georgia [Caucasus] (Adzharia)
33 GEO
species :
Rhododendron ungernii
Trautv.; Trudy Imp. S.-Peterburgsk. Bot. Sada 9: 514 (1886); Regel, in Gartenfl. 35: 278. fig.1 (1886)
Distribution: Georgia [Caucasus] (Adzharia); NE-Turkey
33 GEO 34 TUR
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Pontica
species :
Rhododendron uniflorum
Hutch. & Kingdon-Ward; Spec. Rhododendron, 446 (1930), et Notes Bot. Gard. Edinb. 16: 176 (1931), latine
Distribution: SE-Tibet
36 TIB
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Uniflora
variant :
var. imperator
(Hutch. & Kingdon-Ward) Cullen; Notes Roy. Bot. Gard. Edinburgh 36(1): 113 (1978)
Distribution: SE-Tibet; NE-India (Arunachal Pradesh); NE-Myanmar (Kachin)
36 TIB 40 IND 41 MYA
Synonyms: hidden
= Rhododendron imperator Hutch. & Kingdon-Ward; Spec. Rhododendron, 440 (1930), et Notes Bot. Gard. Edinb. 16: 176 (1931), latine
species :
Rhododendron urophyllum
W.P.Fang; Acta Phytotax. Sin. 21(4): 467-468, pl. 1, f. 3 (1983)
Distribution: China (SW-Sichuan)
36 CHI
species :
Rhododendron uvariifolium
Diels; Notes Roy. Bot. Gard. Edinburgh 5(25): 213 (1912)
Distribution: China (SW-Sichuan, NW-Yunnan); SE-Tibet; Myanmar (Kachin)
36 CHI TIB 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Fulva
Synonyms: hidden
= Rhododendron dendritrichum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 12(57-58): 103-105 (1920)
= Rhododendron monbeigii Rehder & E.H.Wilson; Pl. Wilson. [Sargent] 1: 536 (1913)
= Rhododendron niphargum Balf.f. & Kingdon-Ward; Notes Roy. Bot. Gard. Edinburgh 10(47-48): 125-129 (1917)
= Rhododendron uvariifolium var. griseum Cowan; Notes Roy. Bot. Gard. Edinburgh 21(3): 147 (1953)
species :
Rhododendron uwaense
H.Hara & T.Yamanaka; J. Jap. Bot. 59(10): 290 (1984)
Distribution: Japan (Shikoku)
38 JAP
species :
Rhododendron vaccinioides
Hook.f.; Rhod. Sikkim-Himal. t. 3 (1849)
Distribution: China (NW-Yunnan, SE-Yunnan); SE-Tibet; Nepal; Bhutan; India (Arunachal Pradesh, Nagaland, Sikkim, West Bengal); Myanmar (Kachin)
36 CHI TIB 40 BHU IND NEP 41 MYA
Remarks: Subgen. Rhododendron, Sect. Vireya
Synonyms: hidden
= Azalea vaccinioides (Hook.f.) Kuntze; Revis. Gen. Pl. 2: 386 (1891)
= Rhododendron sinovaccinioides Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13: 295 (1922)
species :
Rhododendron valentinianum
Forrest ex Hutch.; Notes Roy. Bot. Gard. Edinburgh 12: 45 (1919)
Distribution: China (Guizhou, Yunnan); NE-Myanmar; N-Vietnam
36 CHI 41 MYA VIE
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Maddenia
variant :
var. oblongilobatum
R.C.Fang; Acta Bot. Yunnan. 4(3): 250 (1982)
Distribution: China (Yunnan); N-Vietnam
36 CHI 41 VIE
species :
Rhododendron vanderbiltianum
Merr.; Notul. Nat. Acad. Nat. Sci. Philadelphia No. 47, 5 (1940)
Distribution: Sumatra
42 SUM
Remarks: Subgen. Rhododendron
species :
Rhododendron vaniotii
H.Lév.; Repert. Spec. Nov. Regni Veg. 13: 148 (1914)
Distribution: China (Guizhou)
36 CHI
species :
Rhododendron vanvuurenii
J.J.Sm.; Bull. Jard. Bot. Buitenz., Ser. 3, 1: 399 (1920)
Distribution: C-Sulawesi
42 SUL
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron kjellbergii J.J.Sm.; Bot. Jahrb. Syst. 68: 202 (1937)
species :
Rhododendron vaseyi
A.Gray; Proc. Amer. Acad. Arts 15: 48 (1880)
Name: Pinkshell azalea
Distribution: USA (Massachusetts, North Carolina)
75 USA 78 USA
Remarks: Subgen. Pentanthera, Sect. Rhodora
Synonyms: hidden
= Azalea vaseyi (A.Gray) Rehder; Möller´s Deutsche Gärtn.-Zeitung 14: 332 (1899)
= Biltia vaseyi (A.Gray) Small; Fl. S.E. U.S. [Small] 884 (1903)
= Rhododendron vaseyi f. album (Bean) Rehder; Mitt. Deutsch. Dendrol. Ges. 24: 225 (1915 publ. 1916)
= Rhododendron vaseyi var. album Bean; Trees & Shrubs Brit. Isles 2: 384 (1914)
species :
Rhododendron veitchianum
Hook.; Bot. Mag. t. 4992 (1857)
Distribution: Myanmar (Kachin, Mandalay, Mon, Sagaing, Shan, Taninthayi); Thailand; Laos; Vietnam
41 LAO MYA THA VIE
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Maddenia
Synonyms: hidden
= Azalea veitchiana (Hook.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron cubittii Hutch.; Notes Roy. Bot. Gard. Edinburgh 12: 78 (1919)
= Rhododendron smilesii Hutch.; Notes Roy. Bot. Gard. Edinburgh 12: 71 (1919)
= Rhododendron veitchii J.J.Veitch; Cat. New Beautiful Pl. 1863: 15 (1863)
species :
Rhododendron vellereum
Hutch. ex Tagg; Rhododendron Soc. Notes 3: 217, 224 (1928), nomen; et in Spec. Rhododendron, 688 (1930), descr., et ex Tagg, Notes Bot. Gard. Edinb. 16: 209 (1931), latine
Distribution: China (SE-Qinghai); SE-Tibet
36 CHI TIB
Synonyms: hidden
= Rhododendron principis var. vellereum (Hutch. ex Tagg) T.L.Ming; Fl. Xizang. 3: 621 (1986)
species :
Rhododendron venator
Tagg ex L.Rothsch.; Rhododendron Year Book 1933(Suppl.): 102 (1933)
Distribution: SE-Tibet
36 TIB
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Venatora
species :
Rhododendron vernicosum
Franch.; J. Bot. [Morot] 12(15-16): 258 (1898)
Distribution: China (W-Sichuan, W-Yunnan); SE-Tibet
36 CHI TIB
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Fortunea
Synonyms: hidden
= Azalea lucida (Franch.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron adoxum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 28 (1920)
= Rhododendron araliiforme Balf. & Forrest in Balf.f.; Notes Roy. Bot. Gard. Edinburgh 13(65): 232-234 (1922)
= Rhododendron euanthum Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 10(47-48): 103-104 (1917)
= Rhododendron hexamerum Hand.-Mazz.; Anz. Akad. Wiss. Wien, Math.-Naturwiss. Kl. 4-5 (1921)
= Rhododendron lucidum Franch.; J. Bot. [Morot] 9(21): 390 (1895) (not Nutt. (1853)
= Rhododendron rhantum Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 10(47-48): 145-146 (1917)
= Rhododendron sheltoniae Hemsl. & E.H.Wilson; Bull. Misc. Inform. Kew 1910(4): 108-109 (1910)
species :
Rhododendron verruciferum
W.K.Hu; Acta Phytotax. Sin. 26(4): 301-302, f. 1 (1988)
Distribution: China (W-Sichuan)
36 CHI
species :
Rhododendron versteegii
J.J.Sm.; Meded. Herb. Leid. No. 25, 2 (1915)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron verticillatum
H.Low ex Lindl.; J. Hort. Soc. 3: 86 (1848)
subspecies :
subsp. verticillatum
Distribution: Borneo
42 BOR
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron velutinum Becc.; Malesia 1: 204 (1878)
= Rhododendron verticillatum f. velutinum (Becc.) Sleumer; Reinwardtia 5: 185 (1960)
subspecies :
subsp. carinatum
Argent; Rhododendrons subgen. Vireya, ed. 2. 303 (2015)
Distribution: Borneo (Kalimantan)
42 BOR
species :
Rhododendron vesiculiferum
Tagg; Spec. Rhododendron 143 (1930), et Notes Bot. Gard. Edinb. 16: 208 (1931), latine
Distribution: China (W-Yunnan); SE-Tibet; NE-Myanmar
36 CHI TIB 41 MYA
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Glischra
species :
Rhododendron vialii
Delavay & Franch.in Franch.; J. Bot. [Morot] 9(21): 398-399 (1895)
Distribution: China (S-Yunnan); N-Laos; N-Vietnam
36 CHI 41 LAO VIE
Remarks: Subgen. Azaleastrum, Sect. Azaleastrum
species :
Rhododendron vidalii
Rolfe; J. Bot. 24: 348 (1886), nom. nov.
subspecies :
subsp. vidalii
Distribution: Philippines (Luzon)
42 PHI
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron lussoniense Rendle; J. Bot., 356 (1896)
= Rhododendron verticillatum S.Vidal; Rev. Fl. Vasc. Filip. 171 (1886)
subspecies :
subsp. brachystemon
Argent; Folia Malaysiana 4(2): 119 (2003)
Distribution: Philippines (Mindoro)
42 PHI
species :
Rhododendron villosulum
J.J.Sm.; Meded. Herb. Leid. No. 25, 5 (1915)
Distribution: New Guinea (Irian Jaya, Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron dalhousieae var. victorianum Cuvelier; Rev. Hort. Belge Étrangère 13: 49 (1887)
= Rhododendron franssenianum J.J.Sm.; Meded. Herb. Leid. No. 25, 5 (1915)
species :
Rhododendron vinicolor
Sleumer; Reinwardtia 5: 98 (1960)
Distribution: Sumatra
42 SUM
Remarks: Subgen. Rhododendron
species :
Rhododendron vinkii
Sleumer; Blumea 12: 91 (1963)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron virgatum
Hook.f.; Rhod. Sikkim-Himal. t. 26 (1851)
Distribution: China (W-Yunnan); SE-Tibet; Nepal; Bhutan; India (Arunachal Pradesh, Sikkim)
36 CHI TIB 40 BHU IND NEP
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Virgata
Synonyms: hidden
= Azalea oleifolia (Franch.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Azalea virgata (Hook.f.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron oleifolium Franch.; Bull. Soc. Bot. Fr. 33: 235 (1886)
= Rhododendron virgatum subsp. oleifolium (Franch.) Cullen; Notes Roy. Bot. Gard. Edinburgh 36(1): 113 (1978)
= Rhododendron virgatum var. glabriflorum K.M.Feng; Acta Bot. Yunnan. 4(3): 258 (1982)
= Rhododendron virgatum var. oleifolium (Franch.) Demoly; Bull. Ass. Parcs Bot. France 13: 10 (1990)
species :
Rhododendron viridescens
Hutch.; Gard. Chron., Ser. 3, 94: 116 (1933)
Distribution: SE-Tibet
36 TIB
species :
Rhododendron viriosum
Craven; Edinburgh J. Bot. 59(3): 448 (2002)
Distribution: Australia (Queensland)
50 AUS
species :
Rhododendron viscidifolium
Davidian; Rhododendron Year Book 21: 104 (1966)
Distribution: SE-Tibet
36 TIB
species :
Rhododendron viscidum
C.Z.Guo & Z.H.Liu; Acta Bot. Yunnan. 10: 497-498, f. 1 (1988)
Distribution: China (S-Hunan)
36 CHI
species :
Rhododendron viscigemmatum
P.C.Tam; Guihaia 3(3): 181, f. 3 (1983)
Distribution: China (E-Guangxi)
36 CHI
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
species :
Rhododendron viscistylum
Nakai; Bot. Mag. (Tokyo) 49: 498 (1935)
Distribution: Japan (Kyushu)
38 JAP
Remarks: Subgen. Tsutsusi, Sect. Brachycalyx
Synonyms: hidden
= Rhododendron dilatatum var. viscistylum (Nakai) Hatus.; Sci. Rep. Yokosuka City Mus. 15: 21 (1969)
species :
Rhododendron viscosum
(L.) Torr.; Fl. N. Middle U. St. 1: 424 (1824)
Name: Swamp azalea
Distribution: USA (Alabama, Arkansas, Connecticut, District of Columbia, Delaware, Florida, Georgia, Louisiana, Massachusetts, Maryland, Maine, Mississippi, North Carolina, New Hampshire, New Jersey, New York, Oklahoma, Pennsylvania, Rhode Island, South Carolina, Tennessee, Texas, Virginia, Vermont, West Virginia)
74 USA 75 USA 77 USA 78 USA
Remarks: Subgen. Pentanthera, Sect. Pentanthera
Synonyms: hidden
= Anthodendron viscosum (L.) Rchb.; Mössler, Handb. Gewächsk. ed. 2, 1: 424 (1827)
= Azalea glauca (Aiton) Lam.; Tabl. Encycl. 493, t. 110 (1792), nom. illeg.
= Azalea glauca Lam.; Encycl. 1: 340 (1783)
= Azalea glauca var. hispida (Pursh) Heynh.; Nomencl. Bot. Hort. 108 (1840)
= Azalea glauca var. rosea H.Jaeger; Ziergehölze Gärt. Parkanl. 118 (1865)
= Azalea glauca var. spathulata Dum.Cours.; Bot. Cult., ed. 2, 3: 335 (1811)
= Azalea hispida Pursh; Fl. Amer. Sept. [Pursh] 1: 154 (1813)
= Azalea nitida Pursh; Fl. Am. Sept. 1: 153 (1813)
= Azalea oblongifolia Small; Fl. S.E. U.S. [Small] 883 (1903)
= Azalea scabra Bosse; Vollst. Handb. Bl.-gärtn. 1: 239 (1829)
= Azalea tomentosa Du Roi ex F.Dietr.; Vollst. Lex. Gärtn. 1: 118 (1802)
= Azalea virens (Michx.) Dum.Cours.; Bot. Cult., ed. 2, 3: 335 (1811)
= Azalea viscida Christm.; Vollst. Pflanzensyst. 3: 156 (1778)
= Azalea viscosa alba C.F.Ludw.; Neue Wilde Baumz. 6 (1783)
= Azalea viscosa L.; Sp. Pl. [Linnaeus] 151 (1753)
= Azalea viscosa var. aemulans (Rehder) Ashe; J. Elisha Mitchell Sci. Soc. 38: 91 (1922)
= Azalea viscosa var. floribunda Aiton; Hort. Kew. 1: 203 (1789)
= Azalea viscosa var. glauca Aiton; Hort. Kew. 1: 204 (1789)
= Azalea viscosa var. hispida (Pursh) Hook.; Compan. Bot. Mag. 1: 100 (1835)
= Azalea viscosa var. montana (Rehder) Ashe; J. Elisha Mitchell Sci. Soc. 38: 91 (1922)
= Azalea viscosa var. nitida (Pursh) A.Gray; Manual [Gray], ed. 2: 257 (1856)
= Azalea viscosa var. palustris Marshall; Arbust. Amer. 16 (1785)
= Azalea viscosa var. pubescens G.Lodd.; Bot. Cab. 5: t. 441 (1820), nom. subnud.
= Azalea viscosa var. rubescens G.Lodd.; Bot. Cab. 16: t. 1518 (1829)
= Azalea viscosa var. scabra Dum.Cours.; Bot. Cult., ed. 2, 3: 335 (1811)
= Azalea viscosa var. tomentosa (Du Roi ex F.Dietr.) Dum.Cours.; Bot. Cult., ed. 2, 3: 336 (1811)
= Azalea viscosa var. virens Michx.; Fl. Bor.-Amer. 1: 151 (1803)
= Rhododendron coryi Shinners; Castanea 26: 156 (1962)
= Rhododendron glaucum (Lam.) Sweet; Hort. Brit., ed. 2: 344 (1830)
= Rhododendron glaucum G.Don; Gen. Hist. 3: 848 (1834), nom. illeg.
= Rhododendron hispidum (Pursh) Torr.; Fl. N. Middle United States 1: 425 (1824), nom. illeg.
= Rhododendron nitidum (Pursh) Torr.; Fl. N. Middle United States 1: 425 (1824)
= Rhododendron oblongifolium (Small) Millais; Rhododendrons, 219 (1917)
= Rhododendron ornatum Sweet; Brit. Flow. Gard., Ser. 2, t. 137 (1829)
= Rhododendron viscosum f. coerulescens Rehder; Wils. & Rehd., Monogr. Azaleas 165 (1921)
= Rhododendron viscosum f. glaucum (Aiton) Fernald; Rhodora 43: 623 (1941)
= Rhododendron viscosum f. glaucum (Lam.) Voss; Vilm. Blumengärtn. ed. 3. 1: 588 (1894), nom. illeg.
= Rhododendron viscosum f. hispidum (Pursh) Voss; Vilm. Blumengärtn. ed. 3. 1: 588 (1894)
= Rhododendron viscosum f. nitidum (Pursh) Voss; Vilm. Blumengärtn. ed. 3. 1: 588 (1894)
= Rhododendron viscosum f. rhodanthum Rehder; Wils. & Rehd., Monogr. Azaleas 160 (1921)
= Rhododendron viscosum f. roseum Hollick; Bull. Torrey Bot. Club 18: 256 (1891)
= Rhododendron viscosum f. rubescens (G.Lodd.) E.H.Wilson & Rehder; Monogr. Azaleas 161 (1921)
= Rhododendron viscosum var. aemulans Rehder; Monogr. Azaleas [E. H. Wilson & A. Rehder] 165 (1921)
= Rhododendron viscosum var. glaucum (Aiton) Torr.; Fl. N. Middle United States 1: 425 (1824)
= Rhododendron viscosum var. hispidum (Pursh) C.K.Schneid.; Ill. Handb. Laubholzk. 2: 502 (1911)
= Rhododendron viscosum var. montanum Rehder; Monogr. Azaleas [E. H. Wilson & A. Rehder] 164 (1921)
= Rhododendron viscosum var. nitidum (Pursh) A.Gray; Syn. Fl. N. Amer. [Torrey & A. Gray] 2(1): 41 (1878)
= Rhododendron viscosum var. ornatum (Sweet) G.Don; Gen. Hist. 3: 847 (1834)
= Rhododendron viscosum var. tomentosum (Du Roi ex F.Dietr.) Rehder; Wils. & Rehd., Monogr. Azaleas 162 (1921)
species :
Rhododendron vitis-idaea
Sleumer; Reinwardtia 5: 156 (1960)
Distribution: New Guinea (Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron vandeursenii Sleumer; Blumea 11: 123 (1961)
species :
Rhododendron wadanum
Makino; J. Jap. Bot. 1: 21 (1917); et in J. Jap. Bot. 3: 11 (1926)
Distribution: Japan (Honshu)
38 JAP
Remarks: Subgen. Tsutsusi, Sect. Brachycalyx
Synonyms: hidden
= Rhododendron reticulatum var. wadanum (Makino) Hatus.; Sci. Rep. Yokosuka City Mus. 15: 22 (1969)
= Rhododendron wadanum f. kaimontanum Okuyama; J. Jap. Bot. 24: 112 (1949)
= Rhododendron wadanum f. leucanthum (Makino) H.Hara; Enum. Spermatophytarum Japon. 1: 56 (1948)
species :
Rhododendron walongense
Kingdon-Ward; Gard. Chron., Ser. 3, 133: 5 (1953)
Distribution: S-Tibet; NE-India (Arunachal Pradesh)
36 TIB 40 IND
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Maddenia
species :
Rhododendron wardii
W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 8(38): 205-206 (1914)
Distribution: China (Yunnan); SE-Tibet
36 CHI TIB
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Campylocarpa
Synonyms: hidden
= Rhododendron astrocalyx Balf. & Forrest in Balf.f.; Notes Roy. Bot. Gard. Edinburgh 13(61): 30 (1920)
= Rhododendron croceum Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 10(47-48): 93-96 (1917)
= Rhododendron gloeoblastum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(65): 260-261 (1922)
= Rhododendron litiense Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 12(57-58): 126-128 (1920)
= Rhododendron oresterum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 55 (1920)
= Rhododendron prasinocalyx Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 57-58 (1920)
variant :
var. puralbum
(Balf.f. & W.W.Sm.) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 36(1): 116 (1978)
Distribution: China (Yunnan)
36 CHI
Synonyms: hidden
= Rhododendron puralbum Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 9(44-45): 266-267 (1916)
species :
Rhododendron wasonii
Hemsl. & E.H.Wilson; Bull. Misc. Inform. Kew 1910(4): 105 (1910)
Distribution: China (W-Sichuan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Taliensia
Synonyms: hidden
= Rhododendron rhododactylum Millais; Rhododendrons, Ser. 2: 224 (1924)
= Rhododendron wasonii var. rhododactylum (Millais) Davidian; Rhododendron Species 3: 238 (1992)
variant :
var. wenchuanense
L.C.Hu; Bull. Bot. Res., Harbin 6(1): 156-157 (1986)
Distribution: China (NW-Sichuan)
36 CHI
species :
Rhododendron watsonii
Hemsl. & E.H.Wilson; Bull. Misc. Inform. Kew 1910(4): 112 (1910)
Distribution: China (W-Sichuan, S-Gansu)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Grandia
species :
Rhododendron wattii
Cowan; Notes Bot. Gard. Edinb. 19: 163 (1936)
Distribution: NE-India (Arunachal Pradesh)
40 IND
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Grandia
species :
Rhododendron websterianum
Rehder & E.H.Wilson; Sarg., Pl. Wilson. [Sargent] 1: 511 (1913)
Distribution: China (NW-Sichuan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Lapponica
variant :
var. yulongense
M.N.Philipson & Philipson; Notes Roy. Bot. Gard. Edinburgh 34(1): 23 (1975)
Distribution: China (NW-Sichuan)
36 CHI
species :
Rhododendron wentianum
Koord.; Nova Guinea 8: 188 (1909)
Distribution: New Guinea (Irian Jaya, Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron callichilioides Wernham; Trans. Linn. Soc. London, Bot. 9: 95 (1916)
= Rhododendron wollastonii Wernham; Trans. Linn. Soc. London, Bot. 9: 99 (1916)
species :
Rhododendron westlandii
Hemsl.; J. Linn. Soc., Bot. 26(173): 31-32 (1889)
Distribution: China (Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hubei, Hunan, Jiangxi, Sichuan, Zhejiang); Japan; Ryukyu Isl.; Taiwan
36 CHI 38 JAP NNS TAI
Synonyms: hidden
= Azalea westlandii (Hemsl.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron kaliense W.P.Fang & M.Y.He; Bull. Bot. Res., Harbin 2(2): 83 (1982)
= Rhododendron linearicupulare P.C.Tam; Guihaia 3(3): 193, f. 5 (1983)
= Rhododendron moulmainense var. calcaratum G.Z.Li; Acta Bot. Yunnan. 23(3): 290 (2001)
species :
Rhododendron weyrichii
Maxim.; Mém. Acad. Petersb., Ser. VII. 16: n. IX. 26 (1871)
Distribution: South Korea (Cheju Isl.); Japan (Honshu, Shikoku, Kyushu)
38 JAP KOR
Remarks: Subgen. Tsutsusi, Sect. Brachycalyx
Synonyms: hidden
= Azalea weyrichii (Maxim.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron farrerae var. weyrichii (Maxim.) Diels; Bot. Jahrb. Syst. 29: 513 (1900)
= Rhododendron shikokianum Makino; Bot. Mag. (Tokyo) 6: 53 (1892)
= Rhododendron shikokianum var. nudistemon Koidz.; Acta Phytotax. Geobot. 7: 122 (1938), nom. inval.
= Rhododendron weyrichii f. albiflorum T.Yamaz.; Fl. Japan, 3a: 31 (1993)
= Rhododendron weyrichii f. purpuriflorum T.Yamaz.; Fl. Japan, 3a: 31 (1993)
= Rhododendron weyrichii var. psilostylum Nakai; Bot. Mag. (Tokyo) 40: 487 (1926)
= Rhododendron weyrichii var. purpuriflorum (T.Yamaz.) Minamit.; J. Jap. Bot. 94(4): 211 (2019)
species :
Rhododendron whiteheadii
Rendle; J. Bot., 356 (1896)
Distribution: Philippines (Luzon)
42 PHI
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron curranii Merr.; Philipp. J. Sci., C 3: 255 (1908)
species :
Rhododendron widjajae
Argent & Mambrasar; Reinwardtia 18(1): 27 (2019)
Distribution: Sulawesi
42 SUL
species :
Rhododendron wightii
Hook.f.; Rhododendron Sikkim Himalaya t. 27 (1851)
Distribution: S-Tibet; Nepal; Bhutan; NE-India (Arunachal Pradesh, Sikkim)
36 TIB 40 BHU IND NEP
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Taliensia
Synonyms: hidden
= Azalea wightii (Hook.f.) Kuntze; Revis. Gen. Pl. 2: 386 (1891)
species :
Rhododendron wilkiei
Argent; Gard. Bull. Singapore 56(1-2): 88 (2004)
Distribution: Palawan
42 PLW
species :
Rhododendron williamsianum
Rehder & E.H.Wilson; Pl. Wilson. [Sargent] 1: 538 (1913)
Distribution: China (W-Guizhou, SW-Sichuan, NE-Yunnan); SE-Tibet
36 CHI TIB
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Williamsiana
species :
Rhododendron williamsii
Merr. ex H.F.Copel.; Philipp. J. Sci. 40: 137, 163 (1929)
Distribution: Philippines (Luzon)
42 PHI
Remarks: Subgen. Rhododendron
species :
Rhododendron wiltonii
Hemsl. & E.H.Wilson; Bull. Misc. Inform. Kew 1910(4): 107 (1910)
Distribution: China (W-Sichuan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Taliensia
species :
Rhododendron wolongense
W.K.Hu; Rhododendron Notes Rec. 2: 29, f. 1 (1985)
Distribution: China (NW-Sichuan)
36 CHI
species :
Rhododendron womersleyi
Sleumer; Reinwardtia 5: 136 (1960)
Distribution: New Guinea (Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
species :
Rhododendron wongii
Hemsl. & E.H.Wilson; Bull. Misc. Inform. Kew 117 (1910)
Distribution: China (W-Sichuan)
36 CHI
species :
Rhododendron wrayi
King & Gamble; J. Asiat. Soc. Bengal, Pt. 2, Nat. Hist. 74(2): 75 (1906)
Distribution: peninsular Malaysia (Kelantan, Terengganu, Perak, Pahang, Selangor)
42 MLY
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Irrorata
Synonyms: hidden
= Rhododendron coruscum Ridl.; J. Fed. Malay States Mus. 5: 37 (1914)
= Rhododendron dubium King & Gamble; J. Asiat. Soc. Bengal, Pt. 2, Nat. Hist. 74(2): 78 (1906)
= Rhododendron wrayi var. minus Ridl.; J. Fed. Malay States Mus. 6: 157 (1915)
species :
Rhododendron wrightianum
Koord.; Nova Guinea 8: 880 (1912)
Distribution: New Guinea (Irian Jaya, Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
variant :
var. cyclopense
J.J.Sm.; Nova Guinea 12: 130 (1914)
Distribution: New Guinea (Irian Jaya)
42 NWG
variant :
var. insulare
Sleumer; Reinwardtia 5: 174 (1960)
Distribution: New Guinea (Irian Jaya)
42 NWG
species :
Rhododendron wumingense
W.P.Fang; Acta Phytotax. Sin. 21(4): 464 (1983)
Distribution: China (SC-Guangxi)
36 CHI
species :
Rhododendron wuyishanicum
L.K.Ling; Fl. Fujianica 4: 633 (1989 publ. 1990)
Distribution: China (Fujian)
36 CHI
species :
Rhododendron xanthopetalum
Merr.; Philipp. Gov. Lab. Bur. Bull. 29: 41 (1905)
Distribution: Philippines (Luzon, Mindoro)
42 PHI
Remarks: Subgen. Rhododendron
species :
Rhododendron xanthostephanum
Merr.; Brittonia 4: 148 (1941)
Distribution: China (NW-Yunnan); SE-Tibet; NE-India (Arunachal Pradesh); N-Myanmar (Kachin); Vietnam
36 CHI TIB 40 IND 41 MYA VIE
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Tephropepla
Synonyms: hidden
= Rhododendron aureum Franch.; J. Bot. [Morot] 9: 394 (1895) (not Georgi (1775)
= Rhododendron lohitense D.Bhattach.; Fasc. Fl. India 25: 65 (2014)
species :
Rhododendron xenium
Gill.K.Br. & Craven; Novon 13(1): 26 (2003)
Distribution: New Guinea (Irian Jaya)
42 NWG
species :
Rhododendron xiangganense
X.F.Jin & B.Y.Ding; Taxon. Study Rhododendron subgen. Tsutsusi 169 (fig.) (2009)
Distribution: China (Jiangxi, Hunan)
36 CHI
species :
Rhododendron xiaoxidongense
W.K.Hu; J. Sichuan Univ., Nat. Sci. Ed. 27(4): 492 (1990)
Distribution: China (W-Jiangxi)
36 CHI
species :
Rhododendron xiaoxueshanense
R.L.Liao & Y.P.Ma; Phytotaxa 238(3): 293 (2015)
Distribution: China (Yunnan)
36 CHI
species :
Rhododendron xichangense
Z.J.Zhao; Bull. Bot. Res. North-East. Forest. Inst. 7(3): 60 (1987)
Distribution: China (Sichuan)
36 CHI
species :
Rhododendron xiguense
Ching & H.P.Yang; Bull. Bot. Res. North-East. Forest. Inst. 3(2): 92 (1983)
Distribution: China (Gansu)
36 CHI
species :
Rhododendron xishuiense
C.H.Yang & C.D.Yang; Phytotaxa 429(3): 248 (2020)
Distribution: China (Guizhou)
36 CHI
species :
Rhododendron yakuinsulare
Masam.; J. Soc. Trop. Agric. 2: 38 (1930)
Distribution: Japan (Yakushima Isl.)
38 JAP NNS
Synonyms: hidden
= Rhododendron scabrum var. yakuinsulare (Masam.) T.Yamaz.; Fl. Japan, 3a: 23 (1993)
= Rhododendron simsii var. yakuinsulare (Masam.) T.Yamaz.; J. Jap. Bot. 49(9): 272 (1974)
species :
Rhododendron yakumontanum
(T.Yamaz.) T.Yamaz.; J. Jap. Bot. 62(3): 72 (1987)
Distribution: Japan (Yakushima Isl.)
38 JAP NNS
Remarks: Subgen. Tsutsusi, Sect. Brachycalyx
Synonyms: hidden
= Rhododendron nudipes subsp. yakumontanum T.Yamaz.; J. Jap. Bot. 56: 364 (1981)
= Rhododendron yakumontanum var. katsumarunoanum Minamit.; J. Jap. Bot. 93: 98 (2018)
species :
Rhododendron yakushimanum
Nakai; Bot. Mag. (Tokyo) 35: 135 (1921)
Distribution: Japan (Yakushima Isl.)
38 JAP NNS
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Pontica
Synonyms: hidden
= Rhododendron degronianum subsp. yakushimanum (Nakai) H.Hara; J. Jap. Bot. 61: 246 (1986)
= Rhododendron degronianum var. yakushimanum (Nakai) Kitam.; Acta Phytotax. Geobot. 25: 38 (1972)
= Rhododendron metternichii subsp. yakushimanum (Nakai) Sugim.; New Keys Jap. Trees 470 (1961)
= Rhododendron metternichii var. yakushimanum (Nakai) Ohwi; Bull. Natl. Sci. Mus. Tokyo 33: 81 (1953)
variant :
var. intermedium
(Sugim.) T.Yamaz.; Fl. Japan, 3a: 41 (1993)
Distribution: Japan (Yakushima Isl.)
38 JAP NNS
Synonyms: hidden
= Rhododendron degronianum var. intermedium (Sugim.) H.Hara; J. Jap. Bot. 61(8): 247 (1986)
= Rhododendron metternichii var. intermedium Sugim.; New Keys Jap. Trees 470 (1961)
species :
Rhododendron yakushimense
(M.Tash. & H.Hatta) Craven; Blumea 56(1): 34 (2011)
Distribution: Japan (Yakushima Isl.)
38 JAP NNS
Synonyms: hidden
= Menziesia yakushimensis M.Tash. & H.Hatta; Bot. Mag. (Tokyo) 99 (1053): 33 (1986)
species :
Rhododendron yangmingshanense
P.C.Tam; Bull. Bot. Res., Harbin 2(1): 97-98, f. 1 (1982)
Distribution: China (S-Hunan)
36 CHI
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
species :
Rhododendron yaogangxianense
Q.X.Liu; Bull. Bot. Res. North-East. Forest. Inst. 8(3): 87 (1988)
Distribution: China (Hunan)
36 CHI
species :
Rhododendron yaoshanense
L.M.Gao & Shu D.Zhang; Ann. Bot. Fenn. 45(3): 204 (2008)
Distribution: China (Yunnan)
36 CHI
species :
Rhododendron yaoshanicum
W.P.Fang & M.Y.He; Bull. Bot. Res., Harbin 3(1): 3-4, photo. 3 (1983)
Distribution: China (Guangxi)
36 CHI
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
species :
Rhododendron yedoense
Maxim. ex Regel; Gartenflora 35: 565, t. 1233 (1886)
Distribution: Japan (only cultivated known)
38 JAP
Remarks: Subgen. Tsutsusi, Sect. Tsutsusi
Synonyms: hidden
= Rhododendron poukhanense var. yodogawa Rehder; Mitt. Deutsch. Dendrol. Ges. 24: 225 (1915 publ. 1916)
species :
Rhododendron yelliottii
Warb.; Bot. Jahrb. Syst. 16: 25 (1893)
Distribution: New Guinea (Papua New Guinea)
42 NWG
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron saruwagedicum F.Först.; Repert. Spec. Nov. Regni Veg. 13: 222 (1914)
= Rhododendron saruwagedicum var. alpinum Sleumer; Fl. Males. 6: 487 (1966)
species :
Rhododendron yizhangense
Q.X.Liu; Bull. Bot. Res. North-East. Forest. Inst. 8(3): 86 (1988)
Distribution: China (Hunan)
36 CHI
species :
Rhododendron yongii
Argent; Bot. J. Linn. Soc. 85(1): 12 (1982)
Distribution: Borneo (Sarawak)
42 BOR
species :
Rhododendron yungchangense
Cullen; Notes Roy. Bot. Gard. Edinburgh 36(1): 123 (1978)
Distribution: China (W-Yunnan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Maddenia
species :
Rhododendron yungningense
Balf.f. ex Hutch.; Spec. Rhododendron, 436 (1930)
Distribution: China (SW-Sichuan, NW-Yunnan, N-Yunnan)
36 CHI
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Lapponica
Synonyms: hidden
= Rhododendron glomerulatum Hutch.; Gard. Chron. 1932, Ser. 3, 91: 438. (1932)
species :
Rhododendron yunnanense
Franch.; Bull. Soc. Bot. Fr. 33: 232 (1886)
subspecies :
subsp. yunnanense
Distribution: China (W-Guizhou, S-Shaanxi, W-Sichuan, Yunnan); Tibet; Myanmar (Kachin); Vietnam
36 CHI TIB 41 MYA VIE
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Triflora
Synonyms: hidden
= Azalea yunanensis (Franch.) Kuntze; Revis. Gen. Pl. 2: 387 (1891)
= Rhododendron aechmophyllum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13: 226 (1922)
= Rhododendron chartophyllum f. praecox Diels; Notes Roy. Bot. Gard. Edinburgh 5: 217 (1912)
= Rhododendron chartophyllum Franch.; J. Bot. [Morot] 9: 398 (1895)
= Rhododendron hormophorum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 12: 117 (1920)
= Rhododendron shaanxiense W.P.Fang & Z.J.Zhao; Bull. Bot. Res. North-East. Forest. Inst. 2(4): 1 (1982)
= Rhododendron suberosum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(45): 301 (-302) (1922)
subspecies :
subsp. bhutanica
Grierson & D.G.Long; Notes Roy. Bot. Gard. Edinburgh 36(1): 141 (1978)
Distribution: Bhutan
40 BHU
species :
Rhododendron yunyianum
X.F.Jin & B.Y.Ding; Ann. Bot. Fenn. 46(3): 231 (2009)
Distribution: China (Fujian)
36 CHI
species :
Rhododendron yushuense
Z.J.Zhao; Fl. Lign. Qinghaica, Add. 1 (1987)
Distribution: China (S-Qinghai)
36 CHI
species :
Rhododendron zaleucum
Balf.f. & W.W.Sm.; Notes Bot. Gard. Edn. 10: 163 (1917)
Distribution: China (Yunnan); Myanmar
36 CHI 41 MYA
Remarks: Subgen. Rhododendron, Sect. Rhododendron, subsect. Triflora
Synonyms: hidden
= Rhododendron erileucum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 12: 108 (1920)
variant :
var. flaviflorum
Davidian; Quart. Bull. Amer. Rhododendron Soc. 32(2): 84 (1978)
Distribution: Myanmar
41 MYA
variant :
var. pubifolium
R.C.Fang; Acta Bot. Yunnan. 4(3): 255 (1982)
Distribution: China (N-Yunnan); Myanmar
36 CHI 41 MYA
species :
Rhododendron zekoense
Y.D.Sun & Z.J.Zhao; Fl. Lign. Qinghaica, Add. 3 (1987)
Distribution: China (E-Qinghai)
36 CHI
species :
Rhododendron zhangjiajieense
C.L.Peng & L.H.Yan; Bull. Bot. Res., Harbin 27(4): 385 (2007)
Distribution: China (Hunan)
36 CHI
species :
Rhododendron zheguense
Ching & H.P.Yang; Bull. Bot. Res. North-East. Forest. Inst. 3(2): 91 (1983)
Distribution: China (N-Sichuan)
36 CHI
species :
Rhododendron zhongdianense
L.C.Hu; Acta Phytotax. Sin. 22(4): 317-318, f. 2 (1984)
Distribution: China (NW-Yunnan)
36 CHI
species :
Rhododendron ziyuanense
P.C.Tam; Guihaia 2(2): 70-71, f. 2 (1982)
Distribution: China (NE-Guangxi)
36 CHI
species :
Rhododendron zoelleri
Warb.; Bot. Jahrb. Syst. 16: 15, 34 (1892)
Distribution: Moluccas (Seram); New Guinea (Irian Jaya, Papua New Guinea)
42 MOL NWG
Remarks: Subgen. Rhododendron
Synonyms: hidden
= Rhododendron asparagoides Wernham; Trans. Linn. Soc. London, Bot. 9: 94 (1916)
= Rhododendron doctersii J.J.Sm.; Nova Guinea 18: 98 (1936)
= Rhododendron moszkowskii Schltr.; Bot. Jahrb. Syst. 55: 161 (1918)
= Rhododendron oranum J.J.Sm.; Repert. Spec. Nov. Regni Veg. 30: 167 (1932)
species :
Rhododendron zollingeri
J.J.Sm.; Ic. Bogar. t. 312 (1910)
Distribution: Sulawesi; Philippines (Luzon); Java; Lesser Sunda Isl. (Bali, Lombok)
42 JAW LSI PHI SUL
species :
Rhododendron ×agastum
Balf.f. & W.W.Sm.; Trans. Bot. Soc. Edinburgh 27(2): 178-181 (1917)
Distribution: China (?W-Guizhou, NE-Yunnan)
36 CHI
Remarks: Rhododendron delavayi x R. irroratum
species :
Rhododendron ×amoenum
(Lindl.) Planch.; Fl. Serres Jard. Eur. 9: 80 (1853)
Distribution: Japan
38 JAP
Remarks: Rhododendron kaempferi x R. kiusianum
Synonyms: hidden
= Azalea indica var. amoena (Lindl.) Rehder; Cycl. Amer. Hort. [L.H.Bailey] 1: 122 (1900)
= Azalea ×amoena Lindl.; Paxton´s Fl. Gard. 3: t. 89 (1852)
= Azalea ×amoena var. cadwellii Van Geert; Icon. Azal. Ind. 45 (1882)
= Azalea ×amoena var. obtusa Clémenc.; Rev. Hort. (Paris) 46: 300 (1874)
= Rhododendron indicum var. amoenum (Lindl.) Maxim.; Mém. Acad. Imp. Sci. Saint Pétersbourg, Sér. 7, 16(9): 41 (1870)
= Rhododendron kaempferi var. amoenum (Lindl.) Rehder; Sarg., Trees & Shrubs 2: 30 (1907)
= Rhododendron obtusum f. amoenum (Lindl.) Komatsu; Bot. Mag. (Tokyo) 32: (41) (1918)
= Rhododendron obtusum var. amoenum (Lindl.) Rehder; Stand. Cycl. Hort. 5: 2944 (1916)
species :
Rhododendron ×ashitakayamense
Sugim.; J. Geobot. 22(4): 53 (1975)
Distribution: Japan
38 JAP
species :
Rhododendron ×bakeri
(Lemmon & McKay) Hume; Azaleas, Kinds & Culture, 28 (1948)
Distribution: USA (Georgia)
78 USA
Remarks: Rhododendron canescens x R. flammeum
Synonyms: hidden
= Azalea ×bakeri W.P.Lemmon & McKay; Bartonia 19: 16 (1938)
= Azalea ×fastigifolia W.P.Lemmon; Bartonia 19: 15 (1938)
= Rhododendron ×fastigifolium (W.P.Lemmon) H.H.Hume; Azaleas, Kinds & Culture 28 (1948)
species :
Rhododendron ×bathyphyllum
Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 11(52-53): 27-29 (1919)
Distribution: China (NW-Yunnan); SE-Tibet
36 CHI TIB
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Taliensia. Rhododendron aganniphum x R. proteoides.
species :
Rhododendron ×bungonishiki
Komatsu; Bot. Mag. (Tokyo) 32: p. (46), japonice (1918)
Distribution: Japan
38 JAP
Remarks: Rhododendron eriocarpum x R. kaempferi
species :
Rhododendron ×burjaticum
Malyschev; Bot. Mater. Gerb. Bot. Inst. Komarova Akad. Nauk S.S.S.R. 21: 455 (1961), et Malyschev, Fl. Alp. Mont. Sajan. Or. 193 (1965)
Distribution: Siberia (Buryatia, Irkutsk)
30 SIB
Remarks: Rhododendron adamsii Rehder x Rhododendron parvifolium Adams
species :
Rhododendron ×candelabrum
Hook.f.; Rhod. Sikkim-Himal. t. 29 (1849)
Distribution: NE-India
40 IND
Remarks: Rhododendron thomsonii x R. ?
Synonyms: hidden
= Rhododendron thomsonii subsp. candelabrum (Hook.f.) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 36(1): 121 (1978)
= Rhododendron thomsonii var. candelabrum (Hook.f.) C.B.Clarke; Hook.f., Fl. Brit. India [J. D. Hooker] 3: 468 (1882)
= Rhododendron thomsonii var. pallidum Cowan; Notes Roy. Bot. Gard. Edinburgh 19: 253 (1937)
species :
Rhododendron ×chamaezelum
Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13: 241 (1922)
Distribution: China (Yunnan)
36 CHI
Remarks: Rhododendron tapetiforme x R. rupicola var. chryseum
species :
Rhododendron ×charadzeae
A.P.Khokhr. & Mazurenko; Byull. Glavn. Bot. Sada (Moscow), 152: 58 (1989)
Distribution: Northern Caucasus; Georgia [Caucasus]; NE-Turkey
33 GEO NCS 34 TUR
Remarks: Rhododendron ungernii Trautv. x Rhododendron smirnowii Trautv.
Synonyms: hidden
= Rhododendron ×rosifaciens R.I.Milne; Davis (ed.), Fl. Turkey 11: 322 (2000 publ. 2001)
species :
Rhododendron ×chukirishima
T.Yamaz.; Rev. Gen. Rhododendron Japan, Taiwan, Korea & Sakhalin 147 (1996)
Distribution: Japan
38 JAP
Remarks: Rhododendron indicum x scabrum
species :
Rhododendron ×coriifolium
Sleumer; Blumea 12: 107 (1963)
Distribution: Borneo
42 BOR
Remarks: Rhododendron buxifolium x R. rugosum
Synonyms: hidden
= Rhododendron rugosum var. coriifolium (Sleumer) Sleumer; Fl. Males. 6: 612 (1966)
species :
Rhododendron ×davisianum
R.I.Milne; Fl. Turkey & E. Aegaean Isl. 11: 322 (2000 publ. 2001)
Distribution: Turkey
34 TUR
Remarks: Rhododendron caucasicum x R. smirnowii
species :
Rhododendron ×decipiens
Lacaita; J. Linn. Soc., Bot. 43: 473 (1916)
Distribution: N-India (Sikkim, West Bengal)
40 IND
species :
Rhododendron ×detonsum
Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 11(52-53): 48-50 (1919)
Distribution: China (NW-Yunnan)
36 CHI
Remarks: Rhododendron adenogynum x R. vernicosum
species :
Rhododendron ×diphrocalyx
Balf.f.; Notes Roy. Bot. Gard. Edinburgh 11: 55 (1919)
Distribution: China (W-Yunnan)
36 CHI
Synonyms: hidden
= Rhododendron ×burriflorum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13: 34 (1920)
= Rhododendron ×dimidiatum Balf.f.; Notes Roy. Bot. Gard. Edinburgh 11: 54 (1919)
species :
Rhododendron ×diversiflorum
Danet; Rhododendron (Melbourne) 51: 15 (2011)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Rhododendron herzogii x R. pachystigma
species :
Rhododendron ×duclouxii
H.Lév.; Bull. Soc. Agric. Sci. Arts Sarthe, 49 (1903)
Distribution: China (Yunnan)
36 CHI
Remarks: Rhododendron spiciferum x R. spinuliferum
species :
Rhododendron ×edgarianum
Rehder & E.H.Wilson; Sarg., Pl. Wilson. [Sargent] 1: 508 (1913)
Distribution: China (Sichuan)
36 CHI
Remarks: Rhododendron nivale ssp. borale x
species :
Rhododendron ×enomotoi
T.Yamaz.; J. Jap. Bot. 51(1): 31 (1976)
Distribution: Japan
38 JAP
Remarks: Rhododendron indicum x macrosepalum
species :
Rhododendron ×epilosum
(J.J.Sm.) Argent; Rhododendrons subgen. Vireya 44 (2006)
Distribution: C-Sumatra
42 SUM
Remarks: Rhododendron retusum x R. sumatranum
Synonyms: hidden
= Rhododendron retusum var. epilosum J.J.Sm.; Bull. Jard. Bot. Buitenzorg, Sér. 3, 13: 446 (1935)
species :
Rhododendron ×erythrocalyx
Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 12(57-58): 110-112 (1920)
Distribution: China (Yunnan)
36 CHI
Remarks: Rhododendron selense x R. wardii
Synonyms: hidden
= Rhododendron ×beimaense Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13: 32 (1920)
= Rhododendron ×cymbomorphum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 12(57-58): 102-103 (1920)
= Rhododendron ×docimum Balf.f. ex Tagg; Stevenson, Spec. Rhododendron 716 (1930)
= Rhododendron ×erythrocalyx subsp. beimaense (Balf. & Forrest in Balf.f.) Tagg; Spec. Rhododendron 716 (1930)
= Rhododendron ×erythrocalyx subsp. docimum Balf.f. ex Tagg; Spec. Rhododendron 716 (1930)
= Rhododendron ×erythrocalyx subsp. eucallum (Balf.f. & Forrest) Tagg; Spec. Rhododendron 716 (1930)
= Rhododendron ×erythrocalyx subsp. truncatulum (Balf.f. & Forrest) Tagg; Spec. Rhododendron 716 (1930)
= Rhododendron ×eucallum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 43 (1920)
= Rhododendron ×panteumorphum Balf.f. & W.W.Sm.; Notes Roy. Bot. Gard. Edinburgh 9: 257 (1916)
= Rhododendron ×truncatulum Balf.f. & Forrest; Notes Roy. Bot. Gard. Edinburgh 13(61): 63 (1920)
species :
Rhododendron ×filidactylis
R.I.Milne; Fl. Turkey & E. Aegaean Isl. 11: 322 (2000 publ. 2001)
Distribution: Turkey
34 TUR
Remarks: Rhododendron ponticum x R. ungernii
species :
Rhododendron ×fittianum
Balf.f.; Notes Roy. Bot. Gard. Edinburgh 10: 108 (1917)
Distribution: China (Yunnan)
36 CHI
Remarks: Rhododendron racemosum x ?
species :
Rhododendron ×fuchsii
Sleumer; Blumea 12: 341 (1964)
Distribution: Borneo (Sabah)
42 BOR
Remarks: Rhododendron buxifolium x R. lowii
species :
Rhododendron ×furbishii
(W.P.Lemmon & McKay) Leach; Gard. J. New York Bot. Gard 9: 4 (1959)
Distribution: USA (North Carolina, Georgia)
78 USA
Synonyms: hidden
= Rhododendron furbishii (W.P.Lemmon & McKay) Hume; Azaleas, Kinds & Culture, 28 (1948)
= Azalea furbishii W.P.Lemmon & McKay; Bartonia no. 21, 5 (1942)
species :
Rhododendron ×geraldii
(Hutch.) Ivens; Gard. Chron., Ser. 3, 101: 220 (1937)
Distribution: China
36 CHI
Remarks: Rhododendron praevernum x R. sutchuenense
Synonyms: hidden
= Rhododendron sutchuenense var. geraldii Hutch.; Gard. Chron., Ser. 3, 67: 128 (1920)
species :
Rhododendron ×gilliardii
Sleumer; Reinwardtia 5: 88 (1960)
Distribution: New Guinea (Papua New Guinea)
42 NWG
Remarks: Rhododendron dielsianum x R. macgregoriae
species :
Rhododendron ×gladwynense
M.G.Henry; Rhodora 55: 208 (1953)
Distribution: USA (Pennsylvania)
75 USA
Remarks: Rhododendron pruniflorum x R. serrulatum
species :
Rhododendron ×hasegawae
S.Watan.; J. Jap. Bot. 50(2): 174 (2005)
Distribution: Japan (Honshu)
38 JAP
Remarks: Rhododendron kiyosumense x R. wadanum
species :
Rhododendron ×hemigymnum
(Tagg & Forrest) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 37: 333. (1979) [.hemigynum.]
Distribution: Tibet
36 TIB
Remarks: Rhododendron eclecteum x R. pocophorum
Synonyms: hidden
= Rhododendron chaetomallum var. hemigymnum Tagg & Forrest; Notes Roy. Bot. Gard. Edinburgh 16: 189 (1931)
species :
Rhododendron ×hidaense
Makino ex H.Hara; Enum. Spermatophytarum Japon. 1: 32 (1948)
Distribution: Japan
38 JAP
Remarks: Rhododendron brachycarpum x R. japonoheptamerum var. hondoense
species :
Rhododendron ×hunsteinii
Argent; Rhododendrons subgen. Vireya, ed. 2. 376 (2015)
Distribution: New Guinea (Papua New Guinea)
42 NWG
Remarks: Rhododendron leucogigas x ?
species :
Rhododendron ×inopinum
Balf.f.; Notes Roy. Bot. Gard. Edinburgh 15: 109 (1926) pro sp.
Distribution: China (W-Sichuan)
36 CHI
Remarks: Rhododendron pachytrichum x R. wasonii
species :
Rhododendron ×intermedium
Tausch; Flora (Regensburg) 19: 36 (1836)
Distribution: Germany; Switzerland; Austria; etc.
11 AUT GER SWI
Remarks: Rhododendron ferrugineum x R. hirsutum
Synonyms: hidden
= Rhododendron ferrugineum var. intermedium (Tausch) Dolliner; Enum. Pl. Austr. Infer. 84 (1842)
= Rhododendron germanicum var. intermedium (Tausch) Hoppe; Flora (Regensburg) 20: 187 (1837)
= Rhododendron hirsutum var. intermedium (Tausch) Brittinger; Verh. K.K. Zool.-Bot. Ges. Wien 12: 1072 (1862)
= Rhododendron ×halense Grembl.; Oesterr. Bot. Z. 24: 375 (1874)
= Rhododendron ×hirsutiforme Grembl.; Oesterr. Bot. Z. 24: 376 (1874)
= Rhododendron ×intermedium var. halense (Grembl.) Rouy; Fl. France [Rouy & Foucaud] 10: 117 (1908)
= Rhododendron ×intermedium var. hirsutoformum (Grembl.) Rouy; Fl. France [Rouy & Foucaud] 10: 117 (1908)
= Rhododendron ×intermedium var. medium Rouy; Fl. France [Rouy & Foucaud] 10: 117 (1908)
species :
Rhododendron ×kamatae
(Mochizuki) Craven; Blumea 56(1): 34 (2011)
Distribution: Japan (Honshu)
38 JAP
Remarks: Menziesia multiflora x pentandra
Synonyms: hidden
= Menziesia ×kamatae Mochizuki; J. Phytogeogr. Taxon. 29: 108 (1981)
species :
Rhododendron ×kawir
Danet; Adansonia 27(2): 273 (2005)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Rhododendron gardenia x R. herzogii
species :
Rhododendron ×keditii
Sleumer; Blumea 11: 126 (1961)
Distribution: N-Borneo (Sabah)
42 BOR
Remarks: Rhododendron crassifolium x R. rugosum
species :
Rhododendron ×kisoanum
Okuhara ex T.Shimizu; Fl. Nagano Pref. 1508 (1997)
Distribution: Japan
38 JAP
Remarks: Rhododendron dilatatum x reticulatum
species :
Rhododendron ×komatsui
T.Yamaz.; J. Jap. Bot. 51: 31 (1976)
Distribution: Japan
38 JAP
Remarks: Rhododendron kaempferi x R. ripense
Synonyms: hidden
= Rhododendron ×purpureum Komatsu; Bot. Mag. (Tokyo) 32: 161 (1918), nom. illeg.
species :
Rhododendron ×koudzumontanum
Hid.Takah. & Katsuy.; Bull. Kanagawa Prefect. Mus., Nat. Sci. 21: 65 (1992)
Distribution: Japan
38 JAP
Remarks: Rhododendron kaempferi var. macrogemma x tsusiophyllum
species :
Rhododendron ×kuratanum
S.Watan.; J. Jap. Bot. 50(2): 172 (2005)
Distribution: Japan (Honshu)
38 JAP
Remarks: Rhododendron dilatatum x R. kiyosumense
species :
Rhododendron ×kurohimense
Arakawa; Acta Phytotax. Geobot. 26(1-2): 29 (1974)
Distribution: Japan
38 JAP
Remarks: Rhododendron aureum x degronianum
species :
Rhododendron ×liewianum
Argent, A.Lamb & Phillipps; Notes Roy. Bot. Gard. Edinburgh 42(1): 120 (1984)
Distribution: Borneo (Sabah)
42 BOR
Remarks: Rhododendron rugosum x stenophyllum
species :
Rhododendron ×lochmium
Balf.f.; Notes Roy. Bot. Gard. Edinburgh 11: 90 (1919)
Distribution: China (Sichuan)
36 CHI
Remarks: Rhododendron davidsonianum x R. trichanthum
species :
Rhododendron ×mizumotoi
S.Watan.; J. Jap. Bot. 50(2): 174 (2005)
Distribution: Japan (Honshu)
38 JAP
Remarks: Rhododendron dilatatum x R. kiyosumense x R. wadanum
species :
Rhododendron ×monosematum
Hutch., Bot.Mag.142: t.8675.1916
Distribution: China (SW-Sichuan, Yunnan)
36 CHI
Remarks: Rhododendron strigillosum x R. pachytrichum
Synonyms: hidden
= Rhododendron pachytrichum var. monosematum (Hutch.) D.F.Chamb.; R. H. S. Rhododendron Handb. 1998: 350 (1998)
= Rhododendron strigillosum var. monosematum (Hutch.) T.L.Ming; Acta Bot. Yunnan. 6(2): 155 (1984)
species :
Rhododendron ×nebulicola
Danet; Adansonia 27(2): 275 (2005)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Rhododendron brassii x R. versteegii
species :
Rhododendron ×niko-montanum
(Komatsu) Nakai; Bot. Mag. (Tokyo) 31: 242 (1917); et in Bot. Mag. (Tokyo) 41: 503 (1927)
Distribution: Japan
38 JAP
Remarks: Rhododendron aureum x R. brachycarpum
Synonyms: hidden
= Rhododendron chrysanthum var. niko-montanum Komatsu; Icon. Pl. Koisikav. 3: 99 (1917)
species :
Rhododendron ×ootrichum
(Sleumer) Argent; Rhododendrons subgen. Vireya ed. 2: 286 (2015)
Distribution: N-Sumatra
42 SUM
Remarks: Rhododendron rarilepidotum x R. sumatranum
Synonyms: hidden
= Rhododendron ×rarilepidotum var. ootrichum Sleumer; Reinwardtia 5: 191 (1960)
species :
Rhododendron ×pallescens
Hutch.; Gard. Chron., Ser. 3, 93: 418 (1933)
Distribution: China
36 CHI
Remarks: Rhododendron davidsonianum x R. yunnanense
species :
Rhododendron ×paradoxum
Balf.f.; Notes Roy. Bot. Gard. Edinburgh 15: 114 (1926) pro sp.
Distribution: China (W-Sichuan)
36 CHI
Remarks: Rhododendron pachytrichum x R. wiltonii
species :
Rhododendron ×pennsylvanicum
(B.E.Harkn.) Rehder; J. Arnold Arbor. 20: 425 (1939)
Distribution: USA (Delaware, Pennsylvania, South Carolina)
75 USA 78 USA
Remarks: Rhododendron atlanticum x Rhododendron periclymenoides
Synonyms: hidden
= Azalea ×pennsylvanica B.E.Harkn.; Natl. Hort. Mag. 11: 55 (1932)
species :
Rhododendron ×planecostatum
Sleumer; Reinwardtia 5: 153 (1960)
Distribution: Borneo
42 BOR
Remarks: Rhododendron bagobonum x R. crassifolium
species :
Rhododendron ×planetum
Balf.f.; Notes Roy. Bot. Gard. Edinburgh 12: 115 (1920)
Distribution: China (Sichuan)
36 CHI
Remarks: Rhododendron oreodoxa x R. sutchuenense
species :
Rhododendron ×psammogenes
Sleumer; Reinwardtia 5: 150 (1960)
Distribution: New Guinea (Irian Jaya)
42 NWG
Remarks: Rhododendron herzogii x R. macgregoriae
variant :
var. inundatum
(Sleumer) Danet; Rhododendron (Melbourne) 51: 13 (2011) [nothovar.]
Distribution: New Guinea (Irian Jaya)
42 NWG
Synonyms: hidden
= Rhododendron ×inundatum Sleumer; Blumea 12: 92 (1963)
species :
Rhododendron ×pulchrum
Sweet; Brit. Fl. Gard. 2: t. 117 (1832)
Distribution: China (Fujian [I], Guangdong, Guangxi, Hubei, Hunan, Jiangsu, Jiangxi, Zhejiang); Fiji [I]
36 CHI 60 fij
Remarks: Rhododendron mucronatum x R. scabrum
Synonyms: hidden
= Azalea indica var. calycina Lindl.; Paxton´s Fl. Gard. 2: 169 (1852)
= Azalea indica var. phoenicea (Sweet) Hovey; Mag. Hort. Bot. 1: 224 (1835)
= Azalea indica var. rawsonii Loudon; Gard. Mag. (London), n. s. 2: 421 (1836)
= Azalea rosmarinifolia var. purpurea Rehder; Cycl. Amer. Hort. [L.H.Bailey] 1: 123 (1900)
= Azalea ×phaenicea Planch.; Fl. Serres Jard. Eur. 9: 79 (1853)
= Azalea ×punicea Sweet ex Poit.; Ann. Inst. Roy. Hort. Fromont 1: 102, 104 (1829)
= Azalea ×rawsonii (Loudon) Paxton; Paxton´s Mag. Bot. 3: 123 (1837)
= Rhododendron indicum var. phoeniceum Sweet; Brit. Fl. Gard., Ser. 2, 2: t. 128 (1832)
= Rhododendron indicum var. pulchrum (Sweet) G.Don; Gen. Hist. 3: 845 (1834)
= Rhododendron indicum var. purpureum DC.; Prodr. [A. P. de Candolle] 7: 726 (1839)
= Rhododendron indicum var. smithii Sweet; Hort. Brit. (ed. 2) 343 (1830)
= Rhododendron indicum var. speciosum D.Don; Sw., Brit. Fl. Gard., Ser. 2, 3: t. 284 (1835)
= Rhododendron ledifolium var. phoeniceum (Sweet) DC.; Prodr. [A. P. de Candolle] 7: 727 (1839)
= Rhododendron rosmarinifolium var. purpureum (Rehder) C.K.Schneid.; Ill. Handb. Laubholzk. 2: 504 (1911)
= Rhododendron rosmarinifolium var. speciosum Makino; Bot. Mag. (Tokyo) 27: 110 (1913)
= Rhododendron scabrum var. rawsonii (Loudon) Nakai; Bot. Mag. (Tokyo) 38: 33 (1924)
= Rhododendron ×calycinum (Lindl.) Planch.; Fl. Serres Jard. Eur. 9: 81 (1853)
= Rhododendron ×o-murasaki Makino; J. Jap. Bot. 1: 18 (1917)
= Rhododendron ×osakazuki Komatsu; Index Sem. (TI, Tokyo) 1914: 28 (1914)
= Rhododendron ×phoeniceum (Sweet) G.Don; Gen. Hist. 3: 846 (1834)
= Rhododendron ×phoeniceum f. smithii E.H.Wilson; Wils. & Rehd., Monogr. Azaleas 62 (1921)
= Rhododendron ×phoeniceum var. calycinum (Lindl.) Makino; J. Jap. Bot. 1: 18 (1917)
= Rhododendron ×pulchrum var. calycinum (Lindl.) Rehder; J. Arnold Arbor. 7: 33 (1926)
= Rhododendron ×pulchrum var. phoeniceum (Sweet) Rehder; J. Arnold Arbor. 7: 33 (1926)
= Rhododendron ×puniceum (Sweet ex Poit.) Planch.; Fl. Serres Jard. Eur. 9: 79 (1854), nom. illeg.
= Rhododendron ×tebotan Komatsu; Bot. Mag. (Tokyo) 32: (46) (1918)
species :
Rhododendron ×sarcodes
Argent & Madulid; New Plantsman 2(3): 156 (1995)
Distribution: Philippines (Mindanao)
42 PHI
Remarks: Rhododendron bagobonum x R. schadenbergii
Synonyms: hidden
= Rhododendron ×clivianum J.Jay Sm.; Bot. Mag. 75: t. 4478 (1849)
= Rhododendron ×russelianum f. album (Millais) Rehder; Bibliogr. Cult. Trees 505 (1949)
= Rhododendron ×russelianum var. album Millais; Rhododendrons 1: 237 (1917)
species :
Rhododendron ×satsumense
Hatus.; J. Phytogeogr. Taxon. 26: 11 (1978)
Distribution: Japan
38 JAP
Remarks: Rhododendron tashiroi var. lasiophyllum x R. weyrichii
species :
Rhododendron ×schoddei
Sleumer; Blumea 12: 95 (1963)
Distribution: New Guinea (Papua New Guinea)
42 NWG
Remarks: Rhododendron beyerinckianum x R. christi
species :
Rhododendron ×sekimori
Komatsu; Bot. Mag. (Tokyo) 32: (46) (1918)
Distribution: Japan
38 JAP
Remarks: Rhododendron indicum x R. kaempferi
Synonyms: hidden
= Rhododendron ×hannoense Nakai; Nakai & G. Koidz., Trees Shrubs Japan 98 (1922)
species :
Rhododendron ×sheilae
Sleumer; Blumea 11: 122 (1961)
Distribution: Borneo (Sabah)
42 BOR
Remarks: Rhododendron abietifolium x R. buxifolium
species :
Rhododendron ×silvicola
(Sleumer) Argent, A.L.Lamb, Phillipps & Collen.; Sabah Parks Publ. 8: 102 (1988)
Distribution: N-Borneo
42 BOR
Remarks: Rhododendron cuneifolium x R. ericoides
Synonyms: hidden
= Rhododendron ericoides var. silvicola Sleumer; Reinwardtia 5: 62 (1960)
species :
Rhododendron ×sinosimulans
D.F.Chamb.; Fl. of China 14: 384 (2005)
Distribution: China (SW-Sichuan)
36 CHI
Remarks: Subgen. Hymenanthes, Sect. Pontica, subsect. Taliensia
Synonyms: hidden
= Rhododendron mimetes var. simulans Tagg & Forrest; Notes Roy. Bot. Gard. Edinburgh 15(75): 316 (1927)
= Rhododendron simulans (Tagg & Forrest) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 39(2): 343, Map 101 (1982)
species :
Rhododendron ×sochadzeae
Char. & Davlian.; Zametki Sist. Geogr. Rast. 27: 84 (1967)
Distribution: Northern Caucasus; Georgia [Caucasus]; Turkey (NE-Anatolia)
33 GEO NCS 34 TUR
Remarks: Rhododendron caucasicum Pall. x Rhododendron ponticum L.
species :
Rhododendron ×sundarraianum
Sherpa & Gogoi; Rhododendrons Sikkim Darjeeling 389 (2022)
Distribution: N-India (Sikkim)
40 IND
species :
Rhododendron ×takahashianum
Sugim.; J. Geobot. 22(4): 53 (1975)
Distribution: Japan
38 JAP
Remarks: Rhododendron reticulatum x tashiroi
species :
Rhododendron ×tatuoi
Nakai ex H.Hara; Enum. Spermatophytarum Japon. 1: 54 (1948)
Distribution: Japan
38 JAP
Remarks: Rhododendron dilatatum x R. wadanum
species :
Rhododendron ×transiens
Nakai; Nakai & Koidz. Trees & Shrubs Japan Proper, ed. 1, 103 (1922), japonice
Distribution: Japan (Honshu)
38 JAP
Remarks: Rhododendron kaempferi x R. stenopetalum
Synonyms: hidden
= Rhododendron ×tectum Koidz.; Bot. Mag. (Tokyo) 37: 38 (1923)
species :
Rhododendron ×trichophorum
Balf.f.; Notes Roy. Bot. Gard. Edinburgh 12: 173 (1920)
Distribution: China (Sichuan)
36 CHI
Remarks: Rhododendron augustini x R. trichanthum
species :
Rhododendron ×vanhoeffeni
Abrom.; Bibl. Bot. 42: 51 (1899)
Distribution: Greenland
70 GNL
Remarks: Rhododendron lapponicum x R. tomentosum
Synonyms: hidden
= Ledodendron ×vanhoeffenii (Abrom.) Dalgaard & Fredskild; Nordic J. Bot. 13: 255 (1993)
species :
Rhododendron ×variolosum
Becc.; Malesia 1: 206 (1878)
Distribution: Borneo
42 BOR
Remarks: Rhododendron jasminiflorum x R. malayanum
variant :
var. andersonii
(Ridl.) Sleumer; Reinwardtia 5: 105 (1960)
Distribution: Borneo
42 BOR
Synonyms: hidden
= Rhododendron andersonii Ridl.; Bull. Misc. Inform. Kew 1914: 209 (1914)
variant :
var. hybridogenum
(Sleumer) Argent; Rhododendrons subgen. Vireya, ed. 2. 136 (2015)
Distribution: peninsular Malaysia
42 MLY
Synonyms: hidden
= Rhododendron ×hybridogenum Sleumer; Reinwardtia 5: 106 (1960)
species :
Rhododendron ×verruculosum
Rehder & E.H.Wilson; Sarg., Pl. Wilson. [Sargent] 1: 507 (1913)
Distribution: China (Sichuan)
36 CHI
Remarks: Rhododendron flavidum x ?
species :
Rhododendron ×welleslyanum
Waterer ex Rehder; Man. Cult. Trees 683 (1927)
Distribution: USA (North Carolina)
78 USA
Remarks: Rhododendron catawbiense x Rhododendron maximum
Synonyms: hidden
= Rhododendron ×jacksonii Anon.; Bull. Soc. Natl. Hort. France, Sér. 5, 2: 217 (1929)
species :
Rhododendron ×wilhelminae
Hochr.; Candollea 2: 493 (1925)
Distribution: W-Java
42 JAW
Remarks: Rhododendron javanicum x R. malayanum
species :
Rhododendron ×xanthanthum
(Tagg & Forrest) D.F.Chamb.; Notes Roy. Bot. Gard. Edinburgh 37(2): 335 (1979)
Distribution: China (Yunnan); SE-Tibet
36 CHI TIB
Remarks: probably a hybrid of R. citriniflorum
Synonyms: hidden
= Rhododendron chaetomallum var. xanthanthum Taggart & Forrest; Notes Roy. Bot. Gard. Edinburgh 15: 308 (1927)
