501.0000
Family
Plantaginaceae Juss.; Gen. Pl.: 89 (1789), nom. cons.
93 genera, ca. 2050 spp.
Species listed in database: 2086; hybrids: 91
= Antirrhinaceae Pers.; Syn. Pl. 2: 154, 640 (1807)
= Aragoaceae D.Don; Edinburgh New Philos. J. 19: 109, 113 (1835)
= Callitrichaceae Link; Enum. Hort. Berol. Alt. 1: 7 (1821), nom. cons.
= Chelonaceae Martinov; Tekhno-Bot. Slovar: 124 (1820)
= Digitalidaceae Martinov; Tekhno-Bot. Slovar: 202 (1820)
= Ellisiophyllaceae Honda; M. Honda & M. Sakisaka, Daikou Nippon Shokubutsu Bunraigaku (Syst. Pl. Japon.): 372 (1930)
= Erinaceae Pfeiff.; Nomencl. Bot. 1: 1236 (1874)
= Globulariaceae DC.; Lam. & A. DC., Fl. Franç., ed. 3, 3: 427 (1805), nom. cons.
= Gratiolaceae Martinov; Tekhno-Bot. Slovar: 294 (1820)
= Hippuridaceae Vest; Anleit. Stud. Bot.: 265, 278 (1818), nom. cons.
= Linariaceae Bercht. & J.Presl; Prir. Rostlin: 243 (1820)
= Littorellaceae Gray; Nat. Arr. Brit. Pl. 2: 290, 294 (1822)
= Oxycladaceae Schnizl.; Iconogr. Fam. Regni Veg. 2: ad t. 151xx (1857-1870)
= Psylliaceae Horan.; Prim. Lin. Syst. Nat.: 69 (1834)
= Sibthorpiaceae D.Don; Edinburgh New Philos. J. 19: 114 (1835)
= Trapellaceae Honda & Sakis.; Daikou Nippon Shokubutsu Bunraigaku [Syst. Pl. Japon.]: 378 (1930)
= Veronicaceae Cassel; Lehrb. Nat. Pflanzenord.: 366 (1817)
501.2206
Genus
Penstemon Schmidel; Icon. Pl., ed. Keller, 2 (1762)
Distribution: mostly Rocky Mountains, some to Mexico, 1 south to Guatemala, few Eastern USA, some north to Alaska
Species listed in database: 284; hybrids: 8
= Apentostera Raf.; New Fl. 2: 72 (1837)
= Bartramia Salisb.; Prodr. Stirp. Chap. Allerton 99 (1796), nom. illeg.
= Dasanthera Raf.; J. Phys. Chim. Hist. Nat. Arts 89: 99 (1819)
= Elmigera Rchb. ex Spach; Hist. Nat. Vég. 9: 299 (1840)
= Leiostemon Raf.; Neogenyton: 2 (1825)
= Lepteiris Raf.; New Fl. 2: 73 (1837)
species :
Penstemon abietinus
Pennell; Contrib. US. Nat. Herb. 20: 376 (1920)
Name: Firleaf beardtongue
Distribution: USA (Utah: Emery Co., Iron Co., Sevier Co., Utah Co.)
76 USA
Remarks: subgen. Penstemon, sect. Caespitosi
species :
Penstemon absarokensis
Evert; Madroño 31(3): 140 (1984)
Name: Absaroka Range beardtongue
Distribution: USA (Wyoming)
73 USA
Remarks: subgen. Penstemon, sect. Glabri
species :
Penstemon acaulis
L.O.Williams; Ann. Missouri Bot. Gard. 21: 345 (1934)
Name: Stemless beardtongue
Distribution: USA (Utah, Wyoming)
73 USA 76 USA
Remarks: subgen. Penstemon, sect. Cristati
species :
Penstemon acuminatus
Douglas; Bot. Reg. t. 1285 (1829)
Name: Sharpleaf beardtongue
Distribution: USA (Oregon, Washington State)
73 USA
Remarks: subgen. Penstemon, sect. Coerulei
Synonyms: hidden
= Penstemon acuminatus var. fendleri M.E.Jones; Contr. W. Bot. 12: 61 (1908)
variant :
var. latibracteatus
N.H.Holmgren; Brittonia 31(2): 232 (1979), as ´latebracteatus´
Name: Sharpleaf beardtongue
Distribution: USA (Idaho, Nevada, Oregon)
73 USA 76 USA
species :
Penstemon alamosensis
Pennell & Nisbet; Univ. Kansas Sci. Bull. 41: 709 (1960)
Name: Alamo beardtongue
Distribution: USA (New Mexico, Texas)
77 USA
Remarks: subgen. Penstemon, sect. Gentianoides
species :
Penstemon albertinus
Greene; Leaflets Bot. obs. 1: 167 (1906)
Name: Alberta beardtongue
Distribution: Canada (Alberta, British Columbia); USA (Idaho, Montana)
71 CDN 73 USA
Remarks: subgen. Penstemon, sect. Penstemon
Synonyms: hidden
= Penstemon caelestinus Pennell; Notul. Nat. Acad. Nat. Sci. Philadelphia 95: 1 (1942)
= Penstemon calcareus M.E.Jones; Contr. W. Bot. 12: 60 (1908), nom. illeg., non Brandegee
species :
Penstemon albidus
Nutt.; Gen. Am. 2: 53 (1818)
Name: White beardtongue
Distribution: Canada (Alberta, Manitoba, Ontario, Saskatchewan); USA (Colorado, Iowa, Kansas, Minnesota, Montana, North Dakota, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, Wyoming)
71 CDN 72 CDN 73 USA 74 USA 75 USA 77 USA
Remarks: subgen. Penstemon, sect. Cristati
Synonyms: hidden
= Penstemon teretiflorus Fraser ex Nutt.; Gen. N. Amer. Pl. 2: 53 (1818)
= Penstemon viscidulus Nees; Wied, Reise Bras. 2: 333 (1821)
species :
Penstemon albomarginatus
M.E.Jones; Contrib. Western Bot. 12: 61(1908)
Name: Whitemargin beardtongue
Distribution: USA (NW-Arizona, SE-California, S-Nevada)
76 USA
Remarks: subgen. Penstemon, sect. Penstemon
species :
Penstemon ambiguus
Torr.; Ann. Lyc. N. York 2: 228 (1828)
Name: Gilia beardtongue
Distribution: USA (Colorado, Kansas, New Mexico, Oklahoma, Texas); Mexico (Chihuahua)
73 USA 74 USA 77 USA 79 MEX
Remarks: subgen. Penstemon, sect. Ambigui
Synonyms: hidden
= Leiostemon ambiguus (Torr.) Greene; Leafl. Bot. Obs. Crit. 1: 223 (1906)
= Penstemon ambiguus var. foliosus Benth.; Prodr. [A. DC.] 10: 321 (1846)
variant :
var. laevissimus
(D.D.Keck) N.H.Holmgren; Brittonia 31(1): 104 (1979)
Name: Pink plains beardtongue
Distribution: USA (Arizona, Colorado, New Mexico, Nevada, Texas, Utah, Wyoming)
73 USA 76 USA 77 USA
Synonyms: hidden
= Penstemon ambiguus subsp. laevissimus D.D.Keck; J. Wash. Acad. Sci. 29: 491 (1939)
species :
Penstemon ammophilus
N.H.Holmgren & L.M.Schultz; Brittonia 34(4): 381 (1982)
Name: Canaan mountain beardtongue
Distribution: USA (Utah)
76 USA
Remarks: subgen. Penstemon, sect. Glabri
species :
Penstemon amphorellae
Crosswh.; Amer. Midl. Naturalist 84: 241 (1970)
Distribution: Mexico (Coahuila, Guanajuato, Hidalgo, Nuevo Leon, Queretaro, San Luis Potosi, Zacatecas)
79 MEX
species :
Penstemon angelicus
(I.M.Johnst.) Moran; Phytologia 45: 496 (1980)
Distribution: Mexico (Isla Ángel de la Guarda)
79 MEX
Synonyms: hidden
= Penstemon clevelandii subsp. angelicus (I.M.Johnst.) D.D.Keck; Amer. Midl. Naturalist 18: 811 (1937)
= Penstemon clevelandii var. angelicus I.M.Johnst.; Proc. Calif. Acad. Sci., ser. 4, 12: 1165 (1924)
species :
Penstemon anguineus
Eastw.; Bull. Torrey Bot. Club 208 (1905)
Name: Siskiyou beardtongue
Distribution: USA (California, Oregon)
73 USA 76 USA
Remarks: subgen. Penstemon, sect. Penstemon
Synonyms: hidden
= Penstemon minor (A.Gray) D.D.Keck; Publ. Carnegie Inst. Wash. No. 520 (J. Clausen, D. D. Keck & Hiesey, Exper. Stud. Nat. Spec. I.) 295 (1940)
= Penstemon rattanii var. minor A.Gray; Proc. Amer. Acad. Arts 15: 51 (1879)
species :
Penstemon angustifolius
Nutt. ex Pursh; Fl. Amer. Sept. (Pursh) 2: 738 (1813)
Name: Narrowleaf beardtongue
Distribution: USA (Colorado, Montana, North Dakota, Nebraska, South Dakota, Wyoming)
73 USA 74 USA
Remarks: subgen. Penstemon, sect. Coerulei
Synonyms: hidden
= Penstemon caeruleus Nutt.; Gen. N. Amer. Pl. 2: 52 (1818), nom. superfl.
= Chelone caerulea Spreng.; Syst. Veg. ed. 16. 2: 813 (1825)
variant :
var. caudatus
(A.Heller) Rydb.; Bull. Torr. Bot. Club 33: 151 (1906)
Distribution: USA (Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Wyoming)
73 USA 74 USA 77 USA
Synonyms: hidden
= Penstemon angustifolius subsp. caudatus (A.Heller) D.D.Keck; J. Wash. Acad. Sci. 29: 490 (1939)
= Penstemon caudatus A.Heller; Minnesota Bot. Stud. 2: 34 (1898)
variant :
var. dulcis
Neese; Great Basin Nat. 46(3): 459 (1986)
Distribution: USA (Utah)
76 USA
variant :
var. venosus
(D.D.Keck) N.H.Holmgren; Brittonia 31(1): 104 (1979)
Distribution: USA (Arizona, Colorado, New Mexico, Utah)
73 USA 76 USA 77 USA
Synonyms: hidden
= Penstemon angustifolius subsp. venosus D.D.Keck; J. Wash. Acad. Sci. 29: 490 (1939)
= Penstemon venosus (D.D.Keck) Reveal; Great Basin Nat. 34(4): 311 (1974)
variant :
var. vernalensis
N.H.Holmgren; Brittonia 31(2): 229 (1979)
Distribution: USA (Colorado, Utah)
73 USA 76 USA
species :
Penstemon arenarius
Greene; Pittonia 1: 282 (1889)
Name: Nevada sanddune beardtongue
Distribution: USA (Nevada)
76 USA
Remarks: subgen. Penstemon, sect. Penstemon
Synonyms: hidden
= Penstemon deustus var. arenarius (Greene) Jeps.; Man. Fl. Pl. Calif.: 916 (1925)
= Penstemon maguirei Crosswh.; Leafl. West. Bot. 10: 171 (1965)
species :
Penstemon arenicola
A.Nelson; Bull. Tarr. Bot. Club, 280 (1898)
Name: Red Desert Beardtongue
Distribution: USA (Colorado, Montana, Utah, Wyoming)
73 USA 76 USA
Remarks: subgen. Penstemon, sect. Coerulei
species :
Penstemon aridus
Rydb.; Mem. N. York Bot. Gard. 1: 348 (1900)
Name: Stiff-leaf beardtongue
Distribution: USA (E-Idaho, S-Montana, N-Wyoming)
73 USA
Remarks: subgen. Penstemon, sect. Penstemon
species :
Penstemon arkansanus
Pennell; Proc. Acad. Nat. Sci. Philad. 73: 493 (1921 publ. 1922)
Name: Arkansas beardtongue
Distribution: USA (Arkansas, Missouri, Oklahoma)
74 USA 75 USA 78 USA
Remarks: subgen. Penstemon, sect. Penstemon
Synonyms: hidden
= Penstemon multicaulis Pennell; Proc. Acad. Nat. Sci. Philadelphia 73: 494 (1921 publ. 1922)
= Penstemon pallidus subsp. arkansanus (Pennell) R.W.Benn.; Phytologia 9: 57 (1963)
= Penstemon wherryi Pennell; Acad. Nat. Sci. Philad. Monogr. 1, Scroph. 228 (1935)
species :
Penstemon atropurpureus
(Sweet) G.Don; Loudon Hort. Brit. 243 (1830)
Distribution: Mexico (Durango, Sinaloa, etc.)
79 MEX
Synonyms: hidden
= Chelone atropurpurea Sweet; Brit. Fl. Gard. 3: t. 235 (1828)
species :
Penstemon attenuatus
Douglas; Bot. Reg t. 1295 (1830)
Name: Sulphur beardtongue
Distribution: USA (Idaho, Montana, Oregon, Washington State)
73 USA
Remarks: subgen. Penstemon, sect. Penstemon
Synonyms: hidden
= Penstemon digitalis var. attenuatus (Douglas) Trautv.; Bull. Sci. Acad. Imp. Sci. Saint-Pétersbourg 5: 345 (1839)
= Penstemon attenuatus f. multicolor Pennell; Notul. Nat. Acad. Nat. Sci. Philadelphia 71: 8 (1941)
= Penstemon attenuatus subsp. hyacinthinus Pennell; Notul. Nat. Acad. Nat. Sci. Philadelphia 71: 8 (1941)
= Penstemon attenuatus var. glabratus G.N.Jones; Res. Stud. State Coll. Wash. 2: 127 (1931)
= Penstemon attenuatus var. hyacinthinus (Pennell) M.Peck; Man. Pl. Oregon: 644 (1941)
= Penstemon cephalanthus Pennell; Notul. Nat. Acad. Nat. Sci. Philadelphia 95: 3 (1942)
= Penstemon nelsoniae D.D.Keck & Thomps.; Rhodora 37: 419 (1935)
= Penstemon veronicifolius Greene; Leafl. Bot. Observ. Crit. 1: 167 (1906)
variant :
var. militaris
(Greene) Cronquist; Vasc. Pl. Pacif. N. W. [C. L. Hitchcock & al.] 4: 373 (1959)
Name: South Idaho beardtongue
Distribution: USA (Idaho, Montana)
73 USA
Synonyms: hidden
= Penstemon assurgens D.D.Keck; Amer. Midl. Naturalist 23: 609 (1940)
= Penstemon attenuatus subsp. militaris (Greene) D.D.Keck; Amer. Midl. Naturalist 33: 171 (1945)
= Penstemon militaris Greene; Leafl. Bot. Obs. Crit. 1: 166 (1906)
variant :
var. palustris
(Pennell) Cronquist; Vasc. Pl. Pacif. N. W. [C. L. Hitchcock & al.] 4: 373 (1959)
Name: Sulphur beardtongue
Distribution: USA (Idaho, Oregon)
73 USA
Synonyms: hidden
= Penstemon attenuatus subsp. palustris (Pennell) D.D.Keck; Amer. Midl. Naturalist 33: 171 (1945)
= Penstemon palustris Pennell; Not. Nat. Acad. Nat. Sci. Philad., No. 71, 8 (1941)
variant :
var. pseudoprocerus
(Rydb.) Cronquist; Vasc. Pl. Pacif. N. W. [C. L. Hitchcock & al.] 4: 373 (1959)
Name: Small beardtongue
Distribution: USA (Idaho, Montana, Wyoming)
73 USA
Synonyms: hidden
= Penstemon attenuatus subsp. pseudoprocerus (Rydb.) D.D.Keck; Amer. Midl. Naturalist 33: 169 (1945)
= Penstemon owenii A.Nelson; Bot. Gaz. 34: 32 (1902)
= Penstemon procerus var. pseudoprocerus (Rydb.) A.Nelson; Coult. & Nelson, Man. Bot. Rocky Mt., ed. 2: 444 (1909)
= Penstemon propinquus Greene; Leafl. Bot. Observ. Crit. 1: 166 (1906)
= Penstemon pseudohumilis Rydb.; Mem. New York Bot. Gard. 1: 347 (1900)
= Penstemon pseudoprocerus Rydb.; Mem. N. York Bot. Gard. 1: 346 (1900)
species :
Penstemon atwoodii
S.L.Welsh; Great Basin Nat. 35(4): 378 (1975)
Name: Atwood´s beardtongue
Distribution: USA (Utah: Garfield Co., Kane Co.)
76 USA
Remarks: subgen. Penstemon, sect. Cristati
species :
Penstemon auriberbis
Pennell; Contrib. US. Nat. Herb. 20: 339 (1920)
Name: Colorado beardtongue
Distribution: USA (Colorado, New Mexico)
73 USA 77 USA
Remarks: subgen. Penstemon, sect. Cristati
Synonyms: hidden
= Penstemon parviflorus Pennell; Contrib. US, Nat. Herb. 20: 340 (1920)
species :
Penstemon australis
Small; Fl. S. E. U. S. 1060 (1903)
Name: Southern beardtongue
Distribution: USA (Alabama, Florida, Georgia, Kentucky, Mississippi, North Carolina, South Carolina, Tennessee, Virginia)
78 USA
Remarks: subgen. Penstemon, sect. Penstemon
Synonyms: hidden
= Penstemon australis f. odontophyllus Fernald; Rhodora 51: 84 (1949)
species :
Penstemon azureus
Benth.; Pl. Hartw. 327 (1846)
Name: Azure beardtongue
Distribution: USA (California, Oregon)
73 USA 76 USA
Remarks: subgen. Penstemon, sect. Saccanthera
Synonyms: hidden
= Penstemon azureus f. jeffreyanus (Hook.) Voss; Vilm. Blumengärtn. ed. 3. 1: 769 (1894)
= Penstemon glaucifolius A.Gray; Pacif. Railr. Rep. Williamson & Abbot, Bot. 6(3
= Penstemon heterophyllus var. azureus (Benth.) Jeps.; Man. Fl. Pl. Calif.: 917 (1925)
= Penstemon jeffreyanus A.Murray bis; Bot. Exped. Oregon 8: 2 (1853), nom. nud.
= Penstemon tenellus Kellogg; Proc. Calif. Acad. Sci. 1: 56 (1855)
variant :
var. angustissimus
A.Gray; Syn. Fl. N. Amer. 2(1): 272 (1878)
Distribution: USA (California)
76 USA
Synonyms: hidden
= Penstemon azureus subsp. angustissimus (A.Gray) D.D.Keck; Univ. Calif. Publ. Bot. 16: 402 (1932)
species :
Penstemon baccharifolius
Hook.; Bot. Mag. t. 4627 (1852)
Name: Baccharisleaf beardtongue
Distribution: USA (Texas); Mexico (Chihuahua, Coahuila, Guanajuato, Jalisco, San Luis Potosi)
77 USA 79 MEX
Remarks: subgen. Penstemon, sect. Baccharifolii
species :
Penstemon barbatus
(Cav.) Roth; Catalect. fasc. 3: 49 (1806)
Name: Beardlip beardtongue (EN)
Distribution: Germany [I]; Myanmar [I]; USA (Arizona, Massachusetts, New Mexico, Texas, Utah); Mexico (Aguascalientes, Chiapas, Chihuahua, Coahuila, Ciudad de Mexico, Durango, Guanajuato, Hidalgo, Jalisco, Mexico State, Michoacan, Morelos, Nuevo Leon, Oaxaca, Puebla, Queretaro, San Luis Potosi, Sinaloa, Sonora, Tamaulipas, Tlaxcala, Veracruz, Zacatecas)
11 ger 41 mya 75 USA 76 USA 77 USA 79 MEX
Remarks: subgen. Penstemon, sect. Elmigera
Synonyms: hidden
= Chelone angustifolia Steud.; Nom. ed. I. 186 (1821) non Kunth 1818
= Chelone barbata Cav.; Ic. 3: 22. t. 242 (1795)
= Chelone formosa J.C.Wendl.; Beobacht. 51 (1798)
= Chelone formosa J.Thomps.; Bot. Displ.: t. 4 (1798)
= Elmigera barbata (Cav.) Rchb. ex Steud.; Nomencl. Bot., ed. 2, 1: 550 (1840)
= Penstemon angustifolius C.Fraser ex Pursh; Fl. Amer. Sept. 2: 738 (1813), nom. inval.
= Penstemon barbatus f. flaviflorus (M.E.Jones) Pennell; Contr. U.S. Natl. Herb. 29: 114 (1945)
= Penstemon barbatus var. carneus Lindl.; Edwards´s Bot. Reg. 25: t. 21 (1839)
= Penstemon barbatus var. puberulus A.Gray; Rep. U. S. Mex. Bound., Bot. [Emory] 114 (1858)
= Penstemon coccineus Engelm.; Wisliz. Tour New Mexico. 107 (Sketch, 23) (1848)
= Penstemon coccineus var. filifolius A.Gray; Proc. Amer. Acad. Arts 21: 402 (1886)
= Penstemon coeruleus Torr.; Ann. Lyceum Nat. Hist. New York 2: 220 (1827), nom. illeg.
= Penstemon flaviflorus M.E.Jones; Contr. W. Bot. 12: 66 (1908)
= Penstemon formosus (J.Thomps.) Trautv.; Bull. Sci. Acad. Imp. Sci. Saint-Pétersbourg 5: 346 (1839)
variant :
var. torreyi
(Benth. ex DC.) A.Gray; Proc. Amer. Acad. Arts 6: 59 (1862)
Name: Torreys beardtongue
Distribution: USA (Arizona, Colorado, New Mexico, Texas, Utah); Mexico (Sonora, Chihuahua, Coahuila, Nuevo Leon)
73 USA 76 USA 77 USA 79 MEX
Synonyms: hidden
= Penstemon barbatus f. torreyi (Benth. ex DC.) Voss in Vilm.; Vilm. Blumengärtn., ed. 3. 1: 766 (1894)
= Penstemon barbatus subsp. torreyi (Benth.) D.D.Keck; J. Wash. Acad. Sci. 29: 491 (1939)
= Penstemon torreyi Benth.; Prodr. [A. DC.] 10: 324 (1846)
variant :
var. trichander
A.Gray; Proc. Amer. Acad. Arts 11: 94 (1876)
Distribution: USA (Arizona, Colorado, New Mexico, Utah)
73 USA 76 USA 77 USA
Synonyms: hidden
= Penstemon barbatus subsp. trichander (A.Gray) D.D.Keck; J. Wash. Acad. Sci. 29: 491 (1939)
= Penstemon trichander (A.Gray) Rydb.; Bull. Torrey Bot. Club 33: 151 (1906)
species :
Penstemon barnebyi
N.H.Holmgren; Brittonia 31(2): 226 (1979)
Name: Barnebys beardtongue
Distribution: USA (California, Nevada)
76 USA
Remarks: subgen. Penstemon, sect. Cristati
species :
Penstemon barrettiae
A.Gray; Syn. Fl. N. Am. 2: I. Suppl. 440 (1886)
Name: Barrett´s beardtongue
Distribution: USA (Oregon, Washington State)
73 USA
Remarks: subgen. Dasanthera, sect. Erianthera
species :
Penstemon bicolor
(Brandegee) Clokey & D.D.Keck; Bull. S. Calif. Acad. Sci. 38: 12 (1939)
Name: Pinto beardtongue
Distribution: USA (Arizona, California, Nevada)
76 USA
Remarks: subgen. Penstemon, sect. Spectabiles
Synonyms: hidden
= Penstemon bicolor subsp. roseus Clokey & D.D.Keck; Bull. S. Calif. Acad. Sci. 38: 12 (1939)
= Penstemon palmeri var. bicolor Brandegee; Univ. Calif. Publ. Bot. 6: 360 (1916)
= Penstemon pseudospectabilis subsp. bicolor (Brandegee) D.D.Keck; Amer. Midl. Naturalist 18: 806 (1937)
species :
Penstemon bleaklyi
O´Kane & K.D.Heil; Phytoneuron 2014-61: 1 (2014)
Name: Bleakly´s beardtongue
Distribution: USA (New Mexico: Taos Co.)
77 USA
Remarks: subgen. Penstemon, sect. Penstemon
species :
Penstemon bolanius
Straw; Brittonia 15: 62 (1963)
Distribution: Mexico (Jalisco, Zacatecas)
79 MEX
species :
Penstemon bracteatus
D.D.Keck; Leafl. West. Bot. 1: 82 (1934)
Name: Red Canyon beardtongue
Distribution: USA (Utah)
76 USA
Remarks: subgen. Penstemon, sect. Coerulei
species :
Penstemon bradburyi
Pursh; Fl. Am. Sept. 2: 738 (1813)
Name: Shell-leaf beardtongue
Distribution: USA (Colorado, Connecticut, Iowa, Illinois, Indiana, Kansas, Massachusetts, Michigan, Minnesota, Missouri, Montana, North Dakota, Nebraska, New Mexico, Ohio, Oklahoma, South Dakota, Texas, Wisconsin, Wyoming)
73 USA 74 USA 75 USA 77 USA
Remarks: subgen. Penstemon, sect. Coerulei
Synonyms: hidden
= Chelone bradburyi (Pursh) Steud.; Nomencl. Bot. 1: 186 (1821)
= Chelone grandiflora Spreng.; Syst. Veg. ed. 16. 2: 813 (1825), nom. superfl.
= Penstemon grandiflorus Nutt.; Gen. N. Amer. Pl. 2: 53 (1818), nom. superfl.
species :
Penstemon breviculus
(D.D.Keck) Nisbet & R.C.Jacks.; Univ. Kansas Sci. Bull. 41: 734 (1960)
Name: Shortstem beardtongue
Distribution: USA (Arizona, Colorado, New Mexico, Utah)
73 USA 76 USA 77 USA
Remarks: subgen. Penstemon, sect. Cristati
Synonyms: hidden
= Penstemon jamesii subsp. breviculus D.D.Keck; Bull. Torr. Bot. Club 65: 241 (1938)
species :
Penstemon brevisepalus
Pennell; Small, Man. Southeast. Fl. 1204 (1933), et in Acad. Nat. Sci. Philad. Monogr.1, Scroph. 227 (1935)(descr. ampl.)
Name: Short-sepal beardtongue
Distribution: USA (Kentucky, Tennessee, Virginia, West Virginia)
75 USA 78 USA
Remarks: subgen. Penstemon, sect. Penstemon
species :
Penstemon buckleyi
Pennell; Proc. Acad. Nat. Sci. Philad. 73: 486 (1921 publ. 1922)
Name: Buckley´s beardtongue
Distribution: USA (Colorado, Kansas, Nebraska, New Mexico, Oklahoma, Texas)
73 USA 74 USA 77 USA
Remarks: subgen. Penstemon, sect. Coerulei
Synonyms: hidden
= Penstemon amplexicaulis Buckley; Proc. Acad. Sci. Philad. 1861 461 (1862), non Moench 1794
species :
Penstemon caesius
A.Gray; Proc. Amer. Acad. Arts 19: 92 (1883)
Name: San Bernardino beardtongue
Distribution: USA (S-California)
76 USA
Remarks: subgen. Penstemon, sect. Saccanthera
species :
Penstemon caespitosus
Nutt. ex A.Gray; Proc. Amer. Acad. Arts 6: 66 (1862)
Name: Mat beardtongue
Distribution: USA (Colorado, Utah, Wyoming)
73 USA 76 USA
Remarks: subgen. Penstemon, sect. Caespitosi
variant :
var. desertipicti
(A.Nelson) N.H.Holmgren; Brittonia 31(1): 104 (1979)
Distribution: USA (Arizona, Utah)
76 USA
Synonyms: hidden
= Penstemon caespitosus subsp. desertipicti (A.Nelson) D.D.Keck; Bull. Torr. Bot. Club 64: 365 (1937)
= Penstemon desertipicti A.Nelson; Univ. Wyoming Publ. Bot. 1: 130 (1926)
variant :
var. perbrevis
(Pennell) N.H.Holmgren; Brittonia 31(1): 104 (1979)
Distribution: USA (Colorado, Utah)
73 USA 76 USA
Synonyms: hidden
= Penstemon caespitosus subsp. perbrevis Pennell; Contr. U. S. Natl. Herb. 20: 375 (1920)
species :
Penstemon calcareus
Brandegee; Zoe 5: 152 (1903)
Name: Limestone beardtongue
Distribution: USA (California, Nevada)
76 USA
Remarks: subgen. Penstemon, sect. Cristati
Synonyms: hidden
= Penstemon desertorum M.E.Jones; Contr. W. Bot. 12: 59 (1908)
species :
Penstemon californicus
(Munz & L M.Johnst.) D.D.Keck; Bull. Torrey Bot. Club 64: 378 (1937)
Name: California beardtongue
Distribution: USA (California); Mexico (Baja California Norte)
76 USA 79 MEX
Remarks: subgen. Penstemon, sect. Caespitosi
Synonyms: hidden
= Penstemon linarioides var. californicus Munz & I.M.Johnst.; Bull. S. Calif. Acad. Sci. 23: 31 (1924)
species :
Penstemon calycosus
Small; Bull. Torrey Bot. Club 470 (1898)
Name: Long-sepal beardtongue
Distribution: USA (Alabama, Connecticut, District of Columbia, Georgia, Illinois, Indiana, Kentucky, Massachusetts, Maryland, Maine, Michigan, Minnesota, Missouri, North Carolina, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, South Carolina, Tennessee, Virginia, Vermont)
74 USA 75 USA 78 USA
Remarks: subgen. Penstemon, sect. Penstemon
Synonyms: hidden
= Penstemon laevigatus subsp. calycosus (Small) R.W.Benn.; Phytologia 9: 57 (1963)
= Penstemon laevigatus var. calycosus (Small) Farw.; Pap. Michigan Acad. Sci. 26, pt. 1: 18 (1941)
= Penstemon smallii var. calycosus (Small) Krautter; Contr. Bot. Lab. Morris Arbor. Univ. Pennsylvania 3: 164 (1908)
species :
Penstemon campanulatus
(Cav.) Willd.; Sp. Pl. 3: 228 (1800)
subspecies :
subsp. campanulatus
Distribution: Taiwan [I]; Java [I]; Mexico (Aguascalientes, Chihuahua, Coahuila, Ciudad de Mexico, Durango, Guanajuato, Guerrero, Hidalgo, Jalisco, Mexico State, Michoacan, Morelos, Nayarit, Nuevo Leon, Oaxaca, Puebla, Queretaro, San Luis Potosi, Sinaloa, Sonora, Tamaulipas, Tlaxcala, Veracruz, Zacatecas)
38 tai 42 jaw 79 MEX
Synonyms: hidden
= Chelone angustifolia Kunth; Nov. Gen. et Sp. 2: 365. t. 173 (1818)
= Chelone campanulata Cav.; Icon. 1: 18 (1791)
= Chelone campanuloides Andrews; Bot. Repos. 1: t. 40 (1798)
= Chelone elegans Kunth; Nov. Gen. et Sp. 2: 364 (1818)
= Penstemon angustifolius (Kunth) F.Dietr.; Nachtr. Vollst. Lex. Gärtn. 6: 91 (1820), nom. illeg.
= Penstemon campanulatus f. pulchellus (Lindl.) Voss; Vilm. Blumengärtn. ed. 3. 1: 768 (1894)
= Penstemon campanulatus var. angustifolius (Kunth) Hook.; Bot. Mag. 68: t. 3884 (1841)
= Penstemon elegans (Kunth) F.Dietr.; Nachtr. Vollst. Lex. Gärtn. 6: 91 (1820)
= Penstemon hintonii Straw; Brittonia 15: 61 (1963)
= Penstemon pulchellus Lindl.; Bot. Reg. 14: t. 1138 (1828)
variant :
var. chihuahuensis
(Straw) B.L.Turner; Phytoneuron Article 31: 2 (2010)
Distribution: Mexico (Durango, Sonora, Chihuahua, etc.)
79 MEX
Synonyms: hidden
= Penstemon campanulatus subsp. chihuahuensis Straw; Brittonia 15: 59 (1963)
subspecies :
subsp. subglandulosus
(S.S.White) Straw; Brittonia 15: 58 (1963)
Distribution: Mexico (Sonora)
79 MEX
Synonyms: hidden
= Penstemon campanulatus var. subglandulosus S.S.White; J. Arnold Arbor. 28: 440 (1947)
species :
Penstemon canescens
(Britton) Britton; Mem. Torr. Bot. Club 5: 291 (1894)
Name: Eastern gray beardtongue
Distribution: USA (Alabama, Georgia, Illinois, Indiana, Kentucky, Maryland, North Carolina, Ohio, Pennsylvania, South Carolina, Tennessee, Virginia, Vermont, West Virginia)
74 USA 75 USA 78 USA
Remarks: subgen. Penstemon, sect. Penstemon
Synonyms: hidden
= Penstemon brittonorum Pennell ex Beattie; J. Elisha Mitchell Sci. Soc. 45: 276 (1930), nom. subnud.
= Penstemon brittoniorum Pennell; Small, Man. S.E. Fl.: 1204 (1933)
= Penstemon canescens f. brittonorum (Pennell ex Small) Fernald; Rhodora 51: 84 (1949)
= Penstemon canescens f. villicaulis Fernald; Rhodora 51: 83 (1949)
= Penstemon canescens subsp. brittoniorum (Pennell) Pennell; Monogr. Acad. Nat. Sci. Philadelphia 1: 222 (1935)
species :
Penstemon cardinalis
Wooton & Standl.; Contrib. US. Nat. Herb. 16: 171 (1913)
Name: Cardinal beardtongue
Distribution: USA (New Mexico)
77 USA
Remarks: subgen. Penstemon, sect. Elmigera
Synonyms: hidden
= Penstemon crassulus Wooton & Standl.; Contr. U.S. Natl. Herb. 16: 172 (1913)
variant :
var. regalis
(A.Nelson) C.C.Freeman; PhytoKeys 80: 34 (2017)
Distribution: USA (New Mexico, Texas)
77 USA
Synonyms: hidden
= Penstemon cardinalis subsp. regalis (A.Nelson) Nisbet & Jacks.; Univ. Kansas Sci. Bull. 41(5): 707 (1960)
= Penstemon regalis A.Nelson; Am. J. Bot. 21: 578 (1934)
species :
Penstemon cardwellii
Howell; Fl. N. W. Amer. 1: 510 (1901)
Name: Cardwell´s beardtongue
Distribution: USA (Oregon, Washington State)
73 USA
Remarks: subgen. Dasanthera, sect. Erianthera
Synonyms: hidden
= Penstemon fruticosus subsp. cardwellii (Howell) Piper; Contr. U.S. Natl. Herb. 11: 499 (1906)
species :
Penstemon carnosus
Pennell; Ann. Carnegie Mus. 26: 329 (1937)
Name: Fleshy beardtongue
Distribution: USA (E-Utah)
76 USA
Remarks: subgen. Penstemon, sect. Coerulei
species :
Penstemon caryi
Pennell; Contrib. US. Nat. Herb. 20: 354 (1920)
Name: Cary´s beardtongue
Distribution: USA (Montana, Wyoming)
73 USA
Remarks: subgen. Penstemon, sect. Glabri
species :
Penstemon cedrosensis
Krautter; Contr. Bot. Lab. Morris Arbor. Univ. Pennsylvania 3: 129 (1908)
Distribution: Mexico (Cedros Isl.)
79 MEX
species :
Penstemon centranthifolius
(Benth.) Benth.; Scroph. Ind.: 7 (1835)
Name: Scarlet bugler
Distribution: USA (California); Mexico (Baja California Norte); Bolivia [c]
76 USA 79 MEX 83 bol
Remarks: subgen. Penstemon, sect. Gentianoides
Synonyms: hidden
= Chelone centranthifolia Benth.; Trans. Hort. Soc. London, ser. 2, 1: 481 (1834 publ. 1835)
= Chelone cheilanthifolia Paxton; Mag. Bot. 2: t. 50 (1836)
= Penstemon brevilabris A.Gray; Proc. Amer. Acad. Arts 17: 229 (1882)
species :
Penstemon cinicola
D.D.Keck; Am. Midl. Naturalist 22: 297 (1939), anglice, et in Publ. Carnegie Inst. Wash. No. 520 (J. Clausen, D. D. Keck & Hiesey, Exper. Stud. Nat. Spec. I.) 265, 294 (1940), latine
Name: Ash beardtongue
Distribution: USA (N-California, C-Oregon, S-Oregon)
73 USA 76 USA
Remarks: subgen. Penstemon, sect. Penstemon
Synonyms: hidden
= Penstemon truncatus Pennell; Notul. Nat. Acad. Nat. Sci. Philadelphia 71: 5 (1941)
= Penstemon truncatus f. puberulus Pennell; Notul. Nat. Acad. Nat. Sci. Philadelphia 71: 5 (1941)
species :
Penstemon clevelandii
A.Gray; Proc. Calif. Acad. Sci. 11: 94 (1876)
Name: Cleveland´s beardtongue
Distribution: USA (California); Mexico (Baja California Norte)
76 USA 79 MEX
Remarks: subgen. Penstemon, sect. Spectabiles
variant :
var. connatus
Munz & I.M.Johnst.; Bull. Torr. Bot. Club 49: 357 (1923)
Name: San Jacinto beardtongue
Distribution: USA (California)
76 USA
Synonyms: hidden
= Penstemon clevelandii subsp. connatus (Munz & Johnst.) D.D.Keck; Amer. Midl. Naturalist 18: 811 (1937)
variant :
var. mohavensis
(D.D.Keck) McMinn; Man. Calif. Shrubs 511 (1939)
Distribution: USA (California)
76 USA
Synonyms: hidden
= Penstemon clevelandii subsp. mohavensis D.D.Keck; Amer. Midl. Naturalist 18: 810 (1937)
species :
Penstemon clutei
A.Nelson; Am. Boianist 33: 109 (1927)
Name: Sunset Crater beardtongue
Distribution: USA (Arizona)
76 USA
Remarks: subgen. Penstemon, sect. Spectabiles
Synonyms: hidden
= Penstemon pseudospectabilis subsp. clutei (A.Nelson) D.D.Keck; Amer. Midl. Naturalist 18: 806 (1937)
species :
Penstemon cobaea
Nutt.; Trans. Am. Phil. Soc. N. S. 5: 182 (1837)
Name: Cobaea beardtongue
Distribution: USA (Arkansas, Arizona [I], Colorado [I], Iowa, Illinois [I], Kansas, Missouri, Nebraska, New Mexico [I], Ohio [I], Oklahoma, Texas)
73 USA 74 USA 75 USA 76 USA 77 USA 78 USA
Remarks: subgen. Penstemon, sect. Cristati
Synonyms: hidden
= Penstemon grandiflorus F.Dietr.; Neu. Nachtr. Vollst. Lex. Gärtn. 6: 479 (1837), nom. illeg.
= Penstemon hansonii A.Nelson; Publ. Sci. Univ. Wyoming, Bot. 1: 129 (1926)
variant :
var. purpureus
Pennell; Proc. Acad. Nat. Sci. Philadelphia 73: 490 (1922)
Distribution: USA (Arkansas, Missouri, Oklahoma)
74 USA 75 USA 78 USA
Synonyms: hidden
= Penstemon cobaea subsp. purpureus (Pennell) Pennell; Acad. Nat. Sci. Philadelphia Monogr. 1: 250 (1935)
species :
Penstemon comarrhenus
A.Gray; Proc. Amer. Acad. Arts 12: 81 (1877)
Name: Dusty beardtongue
Distribution: USA (Arizona, Colorado, New Mexico, Nevada, Utah)
73 USA 76 USA 77 USA
Remarks: subgen. Penstemon, sect. Glabri
species :
Penstemon compactus
(D.D.Keck) Crosswh.; Amer. Midl. Naturalist 77: 6 (1967)
Name: Compact beardtongue
Distribution: USA (Idaho: Franklin Co., Utah: Cache Co.)
73 USA 76 USA
Remarks: subgen. Penstemon, sect. Glabri
Synonyms: hidden
= Penstemon cyananthus var. compactus (D.D.Keck) Neese
= Penstemon cyananthus subsp. compactus D.D.Keck; Amer. Midl. Naturalist 23: 615 (1940)
species :
Penstemon concinnus
D.D.Keck; Am. Midl. Naturalist 23: 608 (1940)
Name: Tunnel Springs beardtongue
Distribution: USA (Nevada, Utah)
76 USA
Remarks: subgen. Penstemon, sect. Cristati
species :
Penstemon confertus
Douglas; Bot. Reg. t. 1260 (1829)
Name: Yellow beardtongue
Distribution: Canada (Alberta, British Columbia, Saskatchewan); USA (Idaho, Montana, Oregon, Washington State)
71 CDN 73 USA
Remarks: subgen. Penstemon, sect. Penstemon
Synonyms: hidden
= Penstemon confertus var. attenuatus M.E.Jones; Contr. W. Bot. 12: 62 (1908)
= Penstemon confertus var. caeruleopurpureus A.Gray; Proc. Amer. Acad. Arts 6: 72 (1862)
= Penstemon confertus var. rigidus Jeps.; Man. Fl. Pl. Calif.: 914 (1925)
= Penstemon confertus var. violaceus Trautv.; Bull. Sci. Acad. Imp. Sci. Saint-Pétersbourg 5: 344 (1839)
= Penstemon depressus Greene; Leafl. Bot. Observ. Crit. 1: 162 (1906)
= Penstemon lassenianus Greene; Leafl. Bot. Observ. Crit. 1: 164 (1906)
= Penstemon washoensis Greene; Leafl. Bot. Observ. Crit. 1: 163 (1906)
species :
Penstemon confusus
M.E.Jones; Zoe 4: 280 (1893)
Name: Owens Valley beardtongue
Distribution: USA (W-Nevada, E-California)
76 USA
Remarks: subgen. Penstemon, sect. Gentianoides
species :
Penstemon crandallii
A.Heller; Bull. Torrey Bot. Club 354 (1899)
Name: Crandall´s beardtongue
Distribution: USA (Colorado, Utah)
73 USA 76 USA
Remarks: subgen. Penstemon, sect. Caespitosi
Synonyms: hidden
= Penstemon suffrutescens Rydb.; Bull. Torrey Bot. Club 503 (1904)
variant :
var. atratus
(D.D.Keck) N.H.Holmgren; Brittonia 31(1): 105 (1979)
Distribution: USA (Colorado, Utah)
73 USA 76 USA
Synonyms: hidden
= Penstemon crandallii subsp. atratus D.D.Keck; Bull. Torr. Bot. Club 64: 370 (1937)
variant :
var. glabrescens
(Pennell) C.C.Freeman; J. Bot. Res. Inst. Texas 11(2): 287 (2017)
Distribution: USA (Colorado, New Mexico)
73 USA 77 USA
Synonyms: hidden
= Penstemon coloradoensis var. glabrescens (Pennell) A.Nelson; Publ. Univ. Wyoming 3: 105 (1937)
= Penstemon crandallii subsp. glabrescens (Pennell) D.D.Keck; Bull. Torr. Bot. Club 64: 369 (1937)
= Penstemon crandallii subsp. taosensis (D.D.Keck) J.T.Kartesz & Gandhi; Phytologia 72: 89 (1992)
= Penstemon crandallii var. taosensis (D.D.Keck) G.T.Nisbet & R.C.Jacks.; Univ. Kansas Sci. Bull. 41: 726 (1960)
= Penstemon glabrescens Pennell; Contrib. US. Nat. Herb. 20: 375 (1920)
= Penstemon linarioides subsp. taosensis D.D.Keck; Bull. Torr. Bot. Club 64: 373 (1937)
variant :
var. procumbens
(Greene) C.C.Freeman; PhytoKeys 80: 34 (2017)
Distribution: USA (Colorado)
73 USA
Synonyms: hidden
= Penstemon crandallii subsp. procumbens (Greene) D.D.Keck; Bull. Torr. Bot. Club 64: 369 (1937)
= Penstemon procumbens Greene; Pl. Baker 3: 23 (1901)
variant :
var. ramaleyi
(A.Nelson) C.C.Freeman; PhytoKeys 80: 35 (2017)
Distribution: USA (Colorado)
73 USA
Synonyms: hidden
= Penstemon ramaleyi A.Nelson; Publ. Univ. Wyoming 3: 106 (1937)
species :
Penstemon curtiflorus
(D.D.Keck) N.H.Holmgren; Brittonia 70(1): 126, figs. 6, 7k-o (2017)
Name: Cutleaf beardtongue
Distribution: USA (Oregon)
73 USA
Synonyms: hidden
= Penstemon richardsonii subsp. curtiflorus D.D.Keck; Brittonia 8: 249 (1957)
= Penstemon richardsonii var. curtiflorus (D.D.Keck) Cronquist; Vasc. Pl. Pacif. N. W. [C. L. Hitchcock & al.] 4: 401 (1959)
species :
Penstemon cusickii
A.Gray; Proc. Amer. Acad. Arts 16: 106 (1881)
Name: Cusick´s beardtongue
Distribution: USA (Idaho, Oregon)
73 USA
Remarks: subgen. Penstemon, sect. Saccanthera
Synonyms: hidden
= Penstemon macbridei A.Nelson; Bot. Gaz. 53: 272 (1912)
species :
Penstemon cyananthus
Hook.; Bot. Mag. t. 4464, et in Moore & Ayres, Gard. Mag. Bot. 3: 249 (1851)
Name: Wasatch beardtongue
Distribution: USA (Idaho, Utah, Wyoming)
73 USA 76 USA
Remarks: subgen. Penstemon, sect. Glabri
Synonyms: hidden
= Penstemon glaber f. cyananthus (Hook.) Voss; Vilm. Blumengärtn. ed. 3. 1: 766 (1894)
= Penstemon glaber var. cyananthus (Hook.) A.Gray; Proc. Amer. Acad. Arts 6: 60 (1862)
variant :
var. judyae
N.D.Atwood; Utah Fl., ed. 3. 622 (2003)
Distribution: USA (Utah)
76 USA
variant :
var. subglaber
(A.Gray) N.H.Holmgren; Brittonia 31(1): 105 (1979)
Name: Wasatch beardtongue
Distribution: USA (Idaho, Montana, Utah, Wyoming)
73 USA 76 USA
Synonyms: hidden
= Penstemon cyananthus subsp. subglaber (A.Gray) Pennell
= Penstemon fremontii var. subglaber A.Gray; Syn. Fl. N. Amer. 2(1): 262 (1878)
= Penstemon holmgrenii S.L.Clark; Great Basin Nat. 37(1): 100 (1977), et l. c. 37(2): 258 (1977), nom. nov., without replaced synonym page
species :
Penstemon cyaneus
Pennell; Contrib. US. Nat. Herb. 20: 351 (1920)
Name: Blue beardtongue
Distribution: USA (Idaho, Montana, Wyoming)
73 USA
Remarks: subgen. Penstemon, sect. Glabri
species :
Penstemon cyanocaulis
Payson; Bot. Gaz. 60: 380 (1915)
Name: Blue-stem beardtongue
Distribution: USA (Colorado, Utah)
73 USA 76 USA
Remarks: subgen. Penstemon, sect. Glabri
species :
Penstemon cyathophorus
Rydb.; Bull. Torrey Bot. Club 643 (1904)
Name: Sagebrush beardtongue
Distribution: USA (Colorado, Wyoming)
73 USA
Remarks: subgen. Penstemon, sect. Coerulei
species :
Penstemon dasyphyllus
A.Gray; Torr. Bot. Mex. Bound. 112 (1858 publ. 1859)
Name: Thick-leaf beardtongue
Distribution: USA (SE-Arizona, SW-New Mexico, W-Texas); Mexico (Chihuahua, Coahuila, Nuevo Leon, San Luis Potosi, Sonora)
76 USA 77 USA 79 MEX
Remarks: subgen. Penstemon, sect. Chamaeleon
Synonyms: hidden
= Penstemon pringlei S.Watson; Proc. Am, Acad. xxiii 281 (1888)
= Penstemon stenophyllus var. dasyphyllus (A.Gray) A.Gray; Syn. Fl. N. Amer., ed. 2. 2(1): 441 (1886)
species :
Penstemon davidsonii
Greene; Pittonia 2: 241 (1892)
Name: Davidson´s beardtongue
Distribution: Canada (British Columbia); USA (California, Nevada, Oregon, Washington State)
71 CDN 73 USA 76 USA
Remarks: subgen. Dasanthera, sect. Erianthera
Synonyms: hidden
= Penstemon menziesii f. davidsonii (Greene) G.N.Jones; Univ. Wash. Publ. Biol. 5: 226 (1936)
= Penstemon menziesii subsp. davidsonii (Greene) Pennell & D.D.Keck; Publ. Carnegie Inst. Wash. 520: 295 (1940)
= Penstemon menziesii subsp. thompsonii Pennell & D.D.Keck in Abrams; Ill. Fl. Pacific States 3: 768 (1951)
variant :
var. menziesii
(D.D.Keck) Cronquist; C. L. Hitchcock et al., Vasc. Pl. Pacif. N. W. 4: 379 (1959)
Name: Menzies´ beardtongue
Distribution: Canada (British Columbia); USA (Oregon, Washington State)
71 CDN 73 USA
Synonyms: hidden
= Penstemon davidsonii subsp. menziesii D.D.Keck; Brittonia 8: 247 (1957)
= Penstemon douglasii Hook.; Fl. Bor.-Amer. 2: 98 (1838)
= Penstemon fruticosus var. douglasii (Hook.) C.K.Schneid.; Ill. Handb. Laubholzk. 2: 615 (1911)
= Penstemon menziesii f. douglasii (Hook.) Voss; Vilm. Blumengärtn. ed. 3. 1: 765 (1894)
= Penstemon menziesii var. douglasii (Hook.) A.Gray; Proc. Amer. Acad. Arts 6: 57 (1862)
variant :
var. praeteritus
Cronquist; Leafl. W. Bot. 10: 129 (1964)
Name: Timberline beardtongue
Distribution: USA (Nevada, Oregon)
73 USA 76 USA
species :
Penstemon deamii
Pennell; Acad. Nat. Sci. Philad. Monogr. 1, Scroph. 212 (1935)
Name: Deam´s beardtongue
Distribution: USA (Illinois, Indiana)
74 USA 75 USA
Remarks: subgen. Penstemon, sect. Penstemon
Synonyms: hidden
= Penstemon laevigatus var. deamii (Pennell) R.W.Benn.; Phytologia 9: 57 (1963)
species :
Penstemon deaveri
Crosswh.; Amer. Midl. Naturalist 77: 6 (1967), 38
Name: Mt. Graham beardtongue
Distribution: USA (Arizona, New Mexico)
76 USA 77 USA
Remarks: subgen. Penstemon, sect. Glabri
Synonyms: hidden
= Penstemon arizonicus (A.Gray) A.Heller; Bull. Torrey Bot. Club 591 (1899)
= Penstemon hallii var. arizonicus A.Gray; Syn. Fl. N. Amer. 2(1): 263 (1878)
= Penstemon virgatus subsp. arizonicus (A.Gray) D.D.Keck; J. Washington Acad. Sci. 29: 491 (1939)
species :
Penstemon debilis
O´Kane & J.L.Anderson; Brittonia 39(4): 412 (1987)
Name: Parachute beardtongue
Distribution: USA (Colorado)
73 USA
Remarks: subgen. Penstemon, sect. Glabri
species :
Penstemon degeneri
Crosswh.; Amer. Midl. Naturalist 74: 434 (1965)
Name: Degeners beardtongue
Distribution: USA (Colorado)
73 USA
Remarks: subgen. Penstemon, sect. Penstemon
species :
Penstemon deustus
Douglas; Bot. Reg. t. 1318 (1830) ex Lindl.
Name: Scabland beardtongue
Distribution: USA (California, Idaho, Montana, Nevada, Oregon, Washington State, Wyoming)
73 USA 76 USA
Remarks: subgen. Penstemon, sect. Penstemon
Synonyms: hidden
= Penstemon deustus var. savagei L.F.Hend.; Rhodora 33: 206 (1931)
= Penstemon ilicifolius Nutt. ex Benth.; Prodr. [A. DC.] 10: 593 (1846)
variant :
var. pedicellatus
M.E.Jones; Zoe 4: 281 (1893)
Distribution: USA (California, Nevada, Oregon, Utah)
73 USA 76 USA
Synonyms: hidden
= Penstemon deustus subsp. heterander (Torr. & A.Gray) Pennell & D.D.Keck; Amer. Midl. Naturalist 23(3): 603 (1940)
= Penstemon deustus var. heterander (Torr. & A.Gray) M.Peck; Man. Pl. Oregon 642 (1941)
= Penstemon heterander Torr. & A.Gray; Pacif. Railr. Rep. Beckwith & Gunnison, Bot. 2(1): 123 (1857)
variant :
var. suffrutescens
L.F.Hend.; Rhodora 33: 206 (1931)
Distribution: USA (California, Oregon)
73 USA 76 USA
variant :
var. variabilis
(Suksd.) Cronquist; Vasc. Pl. Pacif. N. W. [C. L. Hitchcock & al.] 4: 380 (1959)
Name: Scabland beardtongue
Distribution: USA (Oregon, Washington State)
73 USA
Synonyms: hidden
= Penstemon deustus subsp. variabilis (Suksd.) Pennell & D.D.Keck; Amer. Midl. Naturalist 23: 602 (1940)
= Penstemon paniculatus Howell; Fl. N.W. Amer.: 513 (1901)
= Penstemon variabilis Suksd.; Deutsch. Bot. Monatsschr. 18: 153 (1900)
species :
Penstemon digitalis
Nutt.; Trans. Am. Phil. Soc. N. S. 5: 181 (1837)
Name: Tall white beardtongue (EN)
Distribution: Germany [I]; Canada (New Brunswick, Nova Scotia, Ontario, Québec); USA (Alabama, Arkansas, Connecticut, District of Columbia, Delaware, Georgia, Iowa, Illinois, Indiana, Kansas, Kentucky, Louisiana, Massachusetts, Maryland, Maine, Michigan, Minnesota, Missouri, Mississippi, North Carolina, Nebraska, New Hampshire, New Jersey, New York, Ohio, Oklahoma, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Virginia, Vermont, Wisconsin, West Virginia)
11 ger 72 CDN 74 USA 75 USA 77 USA 78 USA
Remarks: subgen. Penstemon, sect. Penstemon
Synonyms: hidden
= Chelone digitalis (Nutt.) Sweet; Brit. Fl. Gard. 2: t. 120 (1825)
= Penstemon alluviorum Pennell; Small, Man. Southeast. Fl. 1203 (1933), et in Acad. Nat. Sci. Philad. Monogr.1, Scroph. 210 (1935), descr. ampl.
= Penstemon digitalis f. baueri Steyerm.; Rhodora 43: 663 (1941)
= Penstemon digitalis var. albidus Trautv.; Bull. Sci. Acad. Imp. Sci. Saint-Pétersbourg 5: 345 (1839)
= Penstemon digitalis var. latifolius Regel; Index Seminum (LE, Petropolitanus) 1866: 95 (1867)
= Penstemon laevigatus subsp. alluviorum (Pennell) R.W.Benn.; Phytologia 9: 57 (1963)
= Penstemon laevigatus subsp. digitalis (Nutt.) R.W.Benn.; Phytologia 9: 57 (1963)
= Penstemon laevigatus var. digitalis (Nutt.) A.Gray; Syn. Fl. N. Amer. 2(1): 268 (1878)
species :
Penstemon diphyllus
Rydb.; Mem. N. York Bot. Gard. 1: 349 (1900)
Name: Twoleaf beardtongue
Distribution: USA (Idaho, Montana, Washington State)
73 USA
Remarks: subgen. Penstemon, sect. Saccanthera
Synonyms: hidden
= Penstemon triphyllus subsp. diphyllus (Rydb.) D.D.Keck; Univ. Calif. Publ. Bot. 16: 422 (1932)
species :
Penstemon discolor
D.D.Keck; Bull. Torrey Bot. Club 64: 379 (1937)
Name: Catalina beardtongue
Distribution: USA (Arizona)
76 USA
Remarks: subgen. Penstemon, sect. Caespitosi
species :
Penstemon dissectus
Elliott; Sketch 2: 129 (1822)
Name: Dissected beardtongue
Distribution: USA (E-Georgia)
78 USA
Remarks: subgen. Penstemon, sect. Dissecti
species :
Penstemon distans
N.H.Holmgren; Brittonia 32(3): 326 (1980)
Name: Mt. Trumbull beardtongue
Distribution: USA (Arizona)
76 USA
Remarks: subgen. Penstemon, sect. Cristati
species :
Penstemon dolius
M.E.Jones; Contrib. US. Nat. Herb. 20: 341 (1920)
Name: Jones´ beardtongue
Distribution: USA (Nevada, Utah)
76 USA
Remarks: subgen. Penstemon, sect. Cristati
species :
Penstemon duchesnensis
(N.H.Holmgren) Neese; Great Basin Nat. 46(3): 459 (1986)
Name: Duchesne beardtongue
Distribution: USA (Utah: Duchesne Co.)
76 USA
Remarks: subgen. Penstemon, sect. Cristati
Synonyms: hidden
= Penstemon dolius var. duchesnensis N.H.Holmgren; Brittonia 31(2): 219 (1979)
species :
Penstemon dugesii
Pérez-Calix & Zacarías; Phytotaxa 447(3): 210 (2020)
Distribution: Mexico (Guanajuato)
79 MEX
species :
Penstemon eatonii
A.Gray; Proc. Amer. Acad. Arts 8: 395 (1872)
Name: Firecracker beardtongue
Distribution: USA (Arizona, S-California, Colorado, Idaho, New Mexico, Nevada, Utah, Wyoming)
73 USA 76 USA 77 USA
Remarks: subgen. Penstemon, sect. Elmigera
Synonyms: hidden
= Penstemon amplus A.Nelson; Amer. J. Bot. 25: 115 (1938)
= Penstemon centranthifolius S.Watson; Botany [Fortieth Parallel]: 219 (1871), nom. illeg.
variant :
var. exsertus
(A.Nelson) C.C.Freeman; PhytoKeys 80: 35 (2017)
Distribution: USA (Arizona)
76 USA
Synonyms: hidden
= Penstemon eatonii subsp. exsertus (A.Nelson) D.D.Keck; J. Wash. Acad. Sci. 29: 491 (1939)
= Penstemon exsertus A.Nelson; Am. J. Bot. 18: 438 (1931)
variant :
var. undosus
M.E.Jones; Proc. Calif. Acad. Sci. ser. 2, 5: 715 (1895)
Distribution: USA (Arizona, California, Colorado, New Mexico, Nevada, Utah)
73 USA 76 USA 77 USA
Synonyms: hidden
= Penstemon coccinatus Rydb.; Bull. Torrey Bot. Club 36: 691 (1909)
= Penstemon eatonii subsp. undosus (M.E.Jones) D.D.Keck; J. Wash. Acad. Sci. 29: 491 (1939)
= Penstemon munzii I.M.Johnst.; Bull. Torrey Bot. Club 49: 40 (1922)
species :
Penstemon elegantulus
Pennell; Not. Nat. Acad. Nat. Sci. Philad., No. 71, 14 (1941)
Name: Rockvine beardtongue
Distribution: USA (Idaho, Oregon)
73 USA
Remarks: subgen. Penstemon, sect. Penstemon
species :
Penstemon ellipticus
Coult. & Fisher; Coult. Bot. Gaz. 18: 302 (1893)
Name: Rocky ledge beardtongue
Distribution: Canada (Alberta, British Columbia); USA (Idaho, Montana, Washington State, Wyoming)
71 CDN 73 USA
Remarks: subgen. Dasanthera, sect. Erianthera
Synonyms: hidden
= Penstemon davidsonii var. ellipticus (J.M.Coult. & Fisher) B.Boivin; Naturaliste Canad. 93: 1062 (1967)
species :
Penstemon eriantherus
Pursh; Fl. Am. Sept. 2: 737 (1813)
Name: Crested-tongue beardtongue
Distribution: Canada (Alberta, British Columbia); USA (Colorado, Idaho, Montana, North Dakota, Nebraska, South Dakota, Washington State, Wyoming)
71 CDN 73 USA 74 USA
Remarks: subgen. Penstemon, sect. Cristati
Synonyms: hidden
= Chelone cristata (Nutt.) Sreng.; Syst. Veg. ed. 16, 2: 813 (1825)
= Chelone erianthera (Nutt. ex Pursh) Steud.; Nomencl. Bot. 1: 186 (1821)
= Penstemon cristatus Nutt.; Gen. N. Amer. Pl. 2: 52 (1818)
= Penstemon eriantherus var. grandis Pennell & D.D.Keck; Bull. Torrey Bot. Club 65: 251 (1938)
= Penstemon eriantherus var. saliens (Rydb.) Pennell; Contr. U.S. Natl. Herb. 20: 343 (1920)
= Penstemon saliens Rydb.; Mem. New York Bot. Gard. 1: 344 (1900)
variant :
var. argillosus
M.E.Jones; Contr. W. Bot. 12: 62 (1908)
Distribution: USA (Oregon)
73 USA
Synonyms: hidden
= Penstemon dayanus Howell; Fl. N. W. Amer. [Howell] 1: 511 (1901)
= Penstemon whitedii subsp. dayanus (Howell) D.D.Keck; Bull. Torr. Bot. Club 65: 254 (1938)
= Penstemon whitedii var. dayanus (Howell) M.Peck; Man. Pl. Oregon: 647 (1941)
variant :
var. cleburnei
(M.E.Jones) Dorn; Vasc. Pl. Wyoming: 300 (1988)
Name: Cleburn´s beardtongue
Distribution: USA (Utah, Wyoming)
73 USA 76 USA
Synonyms: hidden
= Penstemon cleburni M.E.Jones; Contrib. Western Bot. 12: 62 (1908)
variant :
var. redactus
Pennell & D.D.Keck; Bull. Torr. Bot. Club 65: 252 (1938)
Name: Longsac beardtongue
Distribution: USA (Idaho, Montana, Oregon)
73 USA
Synonyms: hidden
= Penstemon whitedii subsp. tristis Pennell & D.D.Keck; Bull. Torr. Bot. Club 65: 254 (1938)
variant :
var. whitedii
(Piper) A.Nelson; Bot. Gaz. 54: 148 (1912)
Name: Whited´s beardtongue
Distribution: USA (Washington State)
73 USA
Synonyms: hidden
= Penstemon whitedii Piper; Bot. Gaz. 22: 490 (1896)
species :
Penstemon euglaucus
English; Proc. Biol. Soc. Wash. 41: 197 (1928)
Name: Glaucous beardtongue
Distribution: USA (Oregon, Washington State)
73 USA
Remarks: subgen. Penstemon, sect. Penstemon
species :
Penstemon eximius
D.D.Keck; Amer. Midl. Naturalist 18: 798 (1937)
Distribution: Mexico (Baja California Norte, Baja California Sur)
79 MEX
species :
Penstemon fasciculatus
A.Gray; Proc. Amer. Acad. Arts 21: 403 (1886)
Distribution: Mexico (Chihuahua, Sonora)
79 MEX
species :
Penstemon fendleri
Torr. & A.Gray; Pacific Railr. Rep. 2, Pt. 4, Bot. (Pope) 168 (1857)
Name: Fendler´s beardtongue
Distribution: USA (Arizona, Colorado, Kansas, New Mexico, Oklahoma, Texas); Mexico (Chihuahua, Coahuila)
73 USA 74 USA 76 USA 77 USA 79 MEX
Remarks: subgen. Penstemon, sect. Coerulei
species :
Penstemon filiformis
(D.D.Keck) D.D.Keck; Abrams, Ill. Fl. Pacific States 3: 761 (1951)
Name: Threadleaf beardtongue
Distribution: USA (California)
76 USA
Remarks: subgen. Penstemon, sect. Saccanthera
Synonyms: hidden
= Penstemon laetus subsp. filiformis D.D.Keck; Univ. Calif. Publ. Bot. 16: 394 (1932)
= Penstemon laetus var. filiformis (D.D.Keck) McMinn; Man. Calif. Shrubs: 517 (1939)
species :
Penstemon filisepalis
Straw; Bol. Soc. Bot. Mexico, No. 27, 14 (1962)
Distribution: Mexico (Chihuahua)
79 MEX
species :
Penstemon flavescens
Pennell; Not. Nat. Acad. Nat. Sci. Philad., No. 95, 4 (1942)
Name: High mountain beardtongue
Distribution: USA (Idaho, Montana)
73 USA
Remarks: subgen. Penstemon, sect. Penstemon
species :
Penstemon floribundus
Danley; Brittonia 37(3): 321 (1985)
Name: Cordelia beardtongue
Distribution: USA (Nevada: Humboldt Co.)
76 USA
Remarks: subgen. Penstemon, sect. Saccanthera
species :
Penstemon floridus
Brandegee; Coult. Bot. Gaz. 27: 454 (1899)
Name: Panamint beardtongue
Distribution: USA (California, Nevada)
76 USA
Remarks: subgen. Penstemon, sect. Spectabiles
variant :
var. austini
(Eastw.) N.H.Holmgren; Brittonia 31(1): 105 (1979)
Name: Austin´s beardtongue
Distribution: USA (California, Nevada)
76 USA
Synonyms: hidden
= Penstemon austini Eastw.; Bull. Torrey Bot. Club 206 (1905)
= Penstemon floridus subsp. austini (Eastw.) D.D.Keck; Amer. Midl. Naturalist 18: 803 (1937)
species :
Penstemon flowersii
Neese & S.L.Welsh; Great Basin Nat. 43(3): 429 (1983)
Name: Flowers´ beardtongue
Distribution: USA (Utah)
76 USA
Remarks: subgen. Penstemon, sect. Coerulei
species :
Penstemon franklinii
S.L.Welsh; Rhodora, 95(883-884): 414 (1993)
Name: Franklin´s beardtongue
Distribution: USA (Utah)
76 USA
Remarks: subgen. Penstemon, sect. Cristati
species :
Penstemon fremontii
Torr. & A.Gray; Proc. Amer. Acad. Arts 6: 60 (1862)
Name: Fremont´s beardtongue
Distribution: USA (Colorado, Utah, Wyoming)
73 USA 76 USA
Remarks: subgen. Penstemon, sect. Glabri
Synonyms: hidden
= Penstemon glaber var. fremontii (Torr. & A.Gray) M.E.Jones; Contr. W. Bot. 12: 62 (1908)
= Penstemon fremontii var. parryi A.Gray ex S.Watson; Botany [Fortieth Parallel]: 218 (1871)
species :
Penstemon fruticiformis
Coville; Contr. U. S. Natl. Herb. 4: 170 (1893)
Name: Death Valley beardtongue
Distribution: USA (California)
76 USA
Remarks: subgen. Penstemon, sect. Spectabiles
Synonyms: hidden
= Penstemon fruticiformis var. spiciformis Jeps.; Man. Fl. Pl. Calif.: 912 (1925)
variant :
var. amargosae
(D.D.Keck) N.H.Holmgren; Brittonia 44(4): 481 (1992)
Distribution: USA (California, Nevada)
76 USA
Synonyms: hidden
= Penstemon fruticiformis subsp. amargosae D.D.Keck; Amer. Midl. Naturalist 18: 801 (1937)
species :
Penstemon fruticosus
(Pursh) Greene; Pittonia 2: 239 (1892)
Name: Shrubby beardtongue
Distribution: Canada (British Columbia); USA (Idaho, Montana, Oregon, Washington State, Wyoming)
71 CDN 73 USA
Remarks: subgen. Dasanthera, sect. Erianthera
Synonyms: hidden
= Apentostera secundiflora Raf.; New Fl. Am. 2: 72 (1836)
= Dasanthera fruticosa (Pursh) Raf.; Am. Monthly Mag. 267 (1818)
= Gerardia fruticosa Pursh; Fl. Am. Sept. 2: 423. t. 18 (1813)
= Penstemon crassifolius Lindl.; Edwards´s Bot. Reg. 24: t. 16 (1838)
= Penstemon fruticosus var. crassifolius (Lindl.) Krautter; Contr. Bot. Lab. Morris Arbor. Univ. Pennsylvania 3: 100 (1908)
= Penstemon lewisii Benth.; Prodr. [A. DC.] 10: 321 (1846)
= Penstemon menziesii Hook.; Fl. Bor.-Amer. 2: 98 (1838), nom. superfl.
= Penstemon menziesii var. crassifolius (Lindl.) Schelle; Beissner et al., Handb. Laubholzben.: 432 (1903)
= Penstemon menziesii var. lewisii (Benth.) A.Gray; Proc. Amer. Acad. Arts 6: 56 (1862)
= Penstemon menziesii var. peduncularis (Nutt. ex Benth.) Schelle; Beissner et al., Handb. Laubholzben.: 432 (1903)
= Penstemon peduncularis Nutt. ex A.DC.; Prodr. [A. DC.] 10: 593 (1846)
variant :
var. scouleri
(Lindl.) Cronquist; Vasc. Pl. Pacif. N. W. [C. L. Hitchcock & al.] 4: 385 (1959)
Distribution: Canada (Alberta, British Columbia); USA (Idaho, Washington State)
71 CDN 73 USA
Synonyms: hidden
= Chelone scouleri Douglas ex Lindl.; Edwards´s Bot. Reg. 15: t. 1277 (1829), pro syn.
= Penstemon fruticosus subsp. scouleri (Douglas) Pennell & D.D.Keck; Abrams, Ill. Fl. Pacific States 3: 465 (1951)
= Penstemon menziesii f. scouleri (Douglas) Voss; Vilm. Blumengärtn. ed. 3. 1: 765 (1894)
= Penstemon menziesii var. scouleri (Douglas) A.Gray; Proc. Amer. Acad. Arts 6: 57 (1862)
= Penstemon scouleri Douglas; Edwards´s Bot. Reg. 15: t. 1277 (1829)
variant :
var. serratus
(D.D.Keck) Cronquist; Vasc. Pl. Pacif. N. W. [C. L. Hitchcock & al.] 4: 385 (1959)
Distribution: USA (Idaho, Oregon, Washington State)
73 USA
Synonyms: hidden
= Penstemon fruticosus subsp. serratus D.D.Keck; Ill. Fl. Pacific States 3: 765 (1951)
species :
Penstemon gairdneri
Hook.; Fl. Bor. Amer. 2: 99 (1803)
Name: Gairdner´s beardtongue
Distribution: USA (Oregon, Washington State)
73 USA
Remarks: subgen. Penstemon, sect. Penstemon
Synonyms: hidden
= Penstemon gairdneri subsp. hians (Piper) D.D.Keck; Amer. Midl. Naturalist 23: 597 (1940)
= Penstemon gairdneri var. hians Piper; Bull. Torr. Bot. Club 27: 396 (1900)
= Penstemon hians (Piper) I.M.Johnst.; Contrib. Gray Herb. n. s. 68: 92 (1923)
variant :
var. oreganus
A.Gray; Syn. Fl. N. Amer., ed. 2. 2(1): 441 (1886)
Name: Gairdner´s beardtongue
Distribution: USA (C-Idaho, E-Oregon)
73 USA
Synonyms: hidden
= Penstemon gairdneri subsp. oreganus (A.Gray) D.D.Keck; Amer. Midl. Naturalist 23: 596 (1940)
= Penstemon oreganus (A.Gray) Howell; Fl. N.W. Amer.: 515 (1901)
= Penstemon puberulentus Rydb.; Fl. Rocky Mts. 774 (1917)
species :
Penstemon galloensis
G.L.Nesom; Phytologia 71(5): 335 (1991 publ. 1992)
Distribution: Mexico (Coahuila, Nuevo Leon)
79 MEX
species :
Penstemon gentianoides
(Kunth) Poir.; Dict. Sci. Nat. 38: 385 (1825)
Distribution: Mexico (Aguascalientes, Chiapas, Coahuila, Ciudad de Mexico, Durango, Guanajuato, Hidalgo, Jalisco, Mexico State, Michoacan, Morelos, Nuevo Leon, Oaxaca, Puebla, Queretaro, Tamaulipas, Tlaxcala, Veracruz, Zacatecas); Guatemala; Honduras; Costa Rica [c]
79 MEX 80 cos GUA HON
Synonyms: hidden
= Chelone gentianoides Kunth; Nov. Gen. et Sp. 2: 364. t. 172 (1818)
= Penstemon skutchii Straw; Bol. Soc. Bot. Mexico, No. 27, 13 (1962)
species :
Penstemon gentryi
Standl.; Publ. Field Mus. Nat. Hist., Chicago, Bot. Ser. 17: 209 (1937)
Distribution: Mexico (Chihuahua, Sonora)
79 MEX
species :
Penstemon gibbensii
Dorn; Brittonia 34(3): 334 (1982)
Name: Gibbens´ beardtongue
Distribution: USA (Colorado, Utah, Wyoming)
73 USA 76 USA
Remarks: subgen. Penstemon, sect. Glabri
species :
Penstemon glaber
Pursh; Fl. Am. Sept. 2: 738 (1813)
Name: Southern smooth beardtongue
Distribution: USA (Colorado, Montana, North Dakota, Nebraska, South Dakota, Wyoming); Mexico (Chihuahua)
73 USA 74 USA 79 MEX
Remarks: subgen. Penstemon, sect. Glabri
Synonyms: hidden
= Penstemon alpinus f. riparius (A.Nelson) Pennell; Contr. U.S. Natl. Herb. 20: 349 (1920)
= Penstemon glaber var. occidentalis A.Gray; Proc. Amer. Acad. Arts 6: 60 (1862)
= Penstemon glaber var. stenosepalus Regel; Gartenflora 24: 34 (1875)
= Penstemon gordonianus A.Gray; Pacif. Railr. Rep. Stevens, Bot. 12(2): 45 (1860), orth. var.
= Penstemon gordonii Hook.; Bot. Mag. 73: t. 4319 (1847)
= Penstemon riparius A.Nelson; Bull. Torrey Bot. Club 25: 379 (1898)
variant :
var. alpinus
(Torr.) A.Gray; Proc. Amer. Acad. Arts 6: 60 (1862)
Name: Alpine sawsepal beardtongue
Distribution: USA (Colorado, Wyoming)
73 USA
Synonyms: hidden
= Chelone alpina Spreng.; Syst. Veg. ed. 16. 4(2): 235 (1827)
= Penstemon alpinus subsp. magnus (Pennell) Penland; Man. Pl. Colorado 496, 641 (1954)
= Penstemon alpinus Torr.; Ann. Lyc. N. York 1: 35 (1824)
= Penstemon magnus Pennell; Contrib. US. Nat. Herb. 20: 346 (1920)
= Penstemon oreophilus Rydb.; Bull. Torrey Bot. Club 31: 642 (1905)
variant :
var. brandegeei
(Porter) C.C.Freeman; Phytologia 60(2): 105 (1986)
Name: Brandegee´s beardtongue
Distribution: USA (Colorado, New Mexico)
73 USA 77 USA
Synonyms: hidden
= Penstemon alpinus subsp. brandegeei (Porter) Penland; Man. Pl. Colorado 496, 641 (1954)
= Penstemon brandegeei (Porter) Porter ex Rydb.; Mem. N. York Bot. Gard. 1: 343 (1900)
= Penstemon cyananthus var. brandegeei Porter; Syn. Fl. Colorado 91 (1874)
species :
Penstemon glandulosus
Douglas ex Lindl.; Bot. Reg. t. 1262 (1829)
Name: Sticky-stem beardtongue
Distribution: USA (Idaho, Oregon, Washington State)
73 USA
Remarks: subgen. Penstemon, sect. Saccanthera
Synonyms: hidden
= Penstemon staticifolius Lindl.; Bot. Reg. t. 1770 (1835)
variant :
var. chelanensis
(D.D.Keck) Cronquist; Vasc. Pl. Pacif. N. W. [C. L. Hitchcock & al.] 4: 388 (1959)
Distribution: USA (Washington State)
73 USA
Synonyms: hidden
= Penstemon glandulosus subsp. chelanensis D.D.Keck; Ill. Fl. Pacific States 3: 764 (1951)
species :
Penstemon glaucinus
Pennell; Not. Nat. Acad. Nat. Sci. Philad., No. 71, 10 (1941)
Name: Blueleaf beardtongue
Distribution: USA (Oregon: Klamath Co., Lake Co.)
73 USA
Remarks: subgen. Penstemon, sect. Penstemon
species :
Penstemon globosus
(Piper) Pennell & D.D.Keck; Publ. Carnegie Inst. Wash. No. 520 (J. Clausen, D. D. Keck & Hiesey, Exper. Stud. Nat. Spec. 1.) 294 (1940)
Name: Globe beardtongue
Distribution: USA (Idaho, Montana, Oregon)
73 USA
Remarks: subgen. Penstemon, sect. Penstemon
Synonyms: hidden
= Penstemon confertus var. globosus Piper; Bull. Torr. Bot. Club 27: 397 (1900)
species :
Penstemon goodrichii
N.H.Holmgren; Brittonia 30(4): 416 (1978)
Name: Lapoint beardtongue
Distribution: USA (Utah)
76 USA
Remarks: subgen. Penstemon, sect. Cristati
species :
Penstemon gormanii
Greene; Ottawa Naturalist 16: 39 (1902)
Name: Gorman´s beardtongue
Distribution: Alaska; Canada (British Columbia, Northern Territories, Yukon)
70 ASK CDN 71 CDN
Remarks: subgen. Penstemon, sect. Cristati
species :
Penstemon gracilentus
A.Gray; Pacif. Rail. Rep. 6: 82 (1857)
Name: Slender beardtongue
Distribution: USA (California, Nevada, Oregon)
73 USA 76 USA
Remarks: subgen. Penstemon, sect. Saccanthera
Synonyms: hidden
= Penstemon gracilentus var. ursorum Jeps.; Man. Fl. Pl. Calif.: 916 (1925)
species :
Penstemon gracilis
Nutt.; Gen. Am. 2: 52 (1818)
Name: Lilac beardtongue
Distribution: Canada (Alberta, British Columbia, Manitoba, Ontario, Saskatchewan); USA (Colorado, Iowa, Indiana, Michigan, Minnesota, Montana, North Dakota, Nebraska, New Mexico, South Dakota, Wisconsin, Wyoming)
71 CDN 72 CDN 73 USA 74 USA 75 USA 77 USA
Remarks: subgen. Penstemon, sect. Penstemon
Synonyms: hidden
= Chelone gracilis (Nutt.) Spreng.; Syst. Veg. ed. 16. 2: 813 (1825)
= Penstemon digitalis var. glaucus (Graham) Trautv.; Bull. Sci. Acad. Imp. Sci. Saint-Pétersbourg 5: 345 (1839)
= Penstemon digitalis var. gracilis (Nutt.) Trautv.; Bull. Sci. Acad. Imp. Sci. Saint-Pétersbourg 5: 345 (1839)
= Penstemon glaucus Graham; Edinburgh N. Phil. J. 348 (1829)
= Penstemon gracilis f. scoggannii B.Boivin; Phytologia 22(5): 331 (1972)
= Penstemon gracilis subsp. wisconsinensis (Pennell) Pennell; Acad. Nat. Sci. Philadelphia Monogr. 1: 571 (1935)
= Penstemon gracilis var. wisconsinensis (Pennell) Fassett; Spring Fl. Wisconsin, ed. 2, 144 (1938)
= Penstemon pubescens var. gracilis (Nutt.) A.Gray; Proc. Amer. Acad. Arts 6: 69 (1862)
= Penstemon wisconsinensis Pennell; Acad. Nat. Sci. Philad. Monogr. 1, Scroph. 234 (1935)
species :
Penstemon grahamii
D.D.Keck; Ann. Carnegie Mus. 26: 331 (1937)
Name: Uinta Basin beardtongue
Distribution: USA (Colorado, Utah)
73 USA 76 USA
Remarks: subgen. Penstemon, sect. Cristati
species :
Penstemon griffinii
A.Nelson; Bot. Gaz. 56: 70 (1913)
Name: Griffin´s beardtongue
Distribution: USA (Colorado, New Mexico)
73 USA 77 USA
Remarks: subgen. Penstemon, sect. Penstemon
species :
Penstemon grinnellii
Eastw.; Bull. Torrey Bot. Club 207 (1905)
Name: Grinnell´s beardtongue
Distribution: USA (California)
76 USA
Remarks: subgen. Penstemon, sect. Spectabiles
Synonyms: hidden
= Penstemon grinnellii subsp. scrophularioides (M.E.Jones) Munz; Aliso 4: 99 (1958)
= Penstemon grinnellii var. scrophularioides (M.E.Jones) N.H.Holmgren; Brittonia 44(4): 482 (1992)
= Penstemon palmeri var. grinnellii (Eastw.) Munz & I.M.Johnst.; Bull. Torrey Bot. Club 49: 42 (1922)
= Penstemon scrophularioides M.E.Jones; Contrib. Western Bot. 12: 65 (1908)
species :
Penstemon guadalupensis
A.Heller; Contrib. Herb. Frankl. Bot. Expl. S. Texas (1895) 92 t. 7
Name: Guadalupe beardtongue
Distribution: USA (Texas)
77 USA
Remarks: subgen. Penstemon, sect. Cristati
Synonyms: hidden
= Penstemon guadalupensis subsp. ernestii Pennell; Acad. Nat. Sci. Philadelphia Monogr. 1: 252 (1935)
= Penstemon guadalupensis var. ernestii (Pennell) Cory; Rhodora 38: 407 (1936)
species :
Penstemon hallii
A.Gray; Proc. Amer. Acad. Arts 6: 70 (1862)
Name: Hall´s beardtongue
Distribution: USA (Colorado)
73 USA
Remarks: subgen. Penstemon, sect. Glabri
Synonyms: hidden
= Penstemon bakeri Greene; Pittonia 4: 318 (1901)
species :
Penstemon harbourii
A.Gray; Proc. Amer. Acad. Arts 6: 71 (1862)
Name: Harbour´s beardtongue
Distribution: USA (Colorado)
73 USA
Remarks: subgen. Penstemon, sect. Penstemon
species :
Penstemon harringtonii
Penland; Madroño 14: 153 (1958)
Name: Harrington´s beardtongue
Distribution: USA (Colorado)
73 USA
Remarks: subgen. Penstemon, sect. Coerulei
species :
Penstemon hartwegii
Benth.; Pl. Hartw. 48 (1846)
Distribution: Mexico (Hidalgo, Mexico State, Oaxaca, Queretaro, San Luis Potosi, Veracruz); Colombia [I]; Bolivia [c]
79 MEX 82 clm 83 bol
Synonyms: hidden
= Penstemon gentianoides Lindl.; Edwards´s Bot. Reg. 24: t. 3 (1838), nom. illeg.
= Penstemon giganteus C.Morren; Ann. Soc. Roy. Agric. Gand 2: 143 (1846)
= Penstemon hartwegii var. hybridus Voss; Vilm. Blumengärtn. ed. 3. 1: 767 (1894)
= Penstemon puniceus Lilja; Linnaea 17: 111 (1843)
species :
Penstemon havardii
A.Gray; Proc. Amer. Acad. Arts 20: 306 (1885)
Name: Big Bend beardtongue
Distribution: USA (Texas); Mexico (Chihuahua, Coahuila, Nuevo Leon)
77 USA 79 MEX
Remarks: subgen. Penstemon, sect. Gentianoides
species :
Penstemon haydenii
S.Watson ex Coult.; Bot. Gaz. 16: 311 (1891)
Name: Blowout beardtongue
Distribution: USA (Nebraska, Wyoming)
73 USA 74 USA
Remarks: subgen. Penstemon, sect. Coerulei
species :
Penstemon henricksonii
Straw; Madroño 23(5): 263 (1976)
Distribution: Mexico (Coahuila)
79 MEX
species :
Penstemon hesperius
M.E.Peck; Torreya 32: 152 (1932)
Distribution: USA (Washington State, Oregon)
73 USA
Remarks: subgen. Penstemon, sect. Penstemon. Often included in P. rydbergii
species :
Penstemon heterodoxus
A.Gray; Syn. Fl. N. Am. 2: I. 269 (1878)
Name: Sierra beardtongue
Distribution: USA (California, Nevada)
76 USA
Remarks: subgen. Penstemon, sect. Penstemon
Synonyms: hidden
= Penstemon confertus var. geniculatus (Greene) Jeps.; Man. Fl. Pl. Calif.: 914 (1925)
= Penstemon fremontii A.Gray; Watson, Bot. California 1: 622 (1876), nom. illeg.
= Penstemon geniculatus Greene; Pittonia 3: 310 (1898)
= Penstemon glastifolius Greene; Leafl. Bot. Observ. Crit. 1: 162 (1906)
= Penstemon procerus f. geniculatus (Greene) Smiley; Univ. Calif. Publ. Bot. 9: 325 (1921)
variant :
var. cephalophorus
(Greene) N.H.Holmgren; Brittonia 44(4): 482 (1992)
Distribution: USA (California)
76 USA
Synonyms: hidden
= Penstemon cephalophorus Greene; Leafl. Bot. Observ. Crit. 1: 79 (1904)
= Penstemon heterodoxus subsp. cephalophorus (Greene) D.D.Keck; Amer. Midl. Naturalist 33: 165 (1945)
variant :
var. shastensis
(D.D.Keck) N.H.Holmgren; Brittonia 44(4): 482 (1992)
Name: Shasta beardtongue
Distribution: USA (California)
76 USA
Synonyms: hidden
= Penstemon shastensis D.D.Keck; Amer. Midl. Naturalist 33: 165 (1945)
species :
Penstemon heterophyllus
Lindl.; Edwards´s Bot. Reg. 22: t. 1899 (1836)
Name: Bunchleaf beardtongue
Distribution: USA (W-California)
76 USA
Remarks: subgen. Penstemon, sect. Saccanthera
Synonyms: hidden
= Penstemon leucanthus Greene; Pittonia 1: 72 (1887)
variant :
var. australis
Munz & I.M.Johnst.; Bull. S. Calif. Acad. Sci. 23: 40 (1924)
Name: Foothill beardtongue
Distribution: USA (California)
76 USA
Synonyms: hidden
= Penstemon heterophyllus subsp. australis (Munz & Johnst.) D.D.Keck; Univ. Calif. Publ. Bot. 16: 411 (1932)
variant :
var. purdyi
(D.D.Keck) McMinn; Man. Calif. Shrubs 518 (1939)
Name: Purdy´s beardtongue
Distribution: USA (California)
76 USA
Synonyms: hidden
= Penstemon heterophyllus subsp. purdyi D.D.Keck; Univ. Calif. Publ. Bot. 16: 409, fig. 15 (1932)
= Penstemon heterophyllus subsp. spinulosus (Wooton & Standl.) D.D.Keck; Univ. Calif. Publ. Bot. 16: 410 (1932)
= Penstemon spinulosus Wooton & Standl.; Contr. U. S. Natl. Herb. 16: 173 (1913)
species :
Penstemon hidalgensis
Straw; Brittonia 15: 51 (1963)
Distribution: Mexico (Aguascalientes, Hidalgo, Jalisco, Oaxaca, Queretaro, San Luis Potosi, Zacatecas); Ecuador [I]
79 MEX 83 ecu
species :
Penstemon hirsutus
(L.) Willd.; Sp. Pl. 3: 227 (1800)
Name: Northeastern beardtongue
Distribution: Canada (Ontario, Québec); USA (Connecticut, District of Columbia, Delaware, Illinois, Indiana, Kentucky, Massachusetts, Maryland, Maine, Michigan, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Tennessee, Virginia, Vermont, Wisconsin, West Virginia)
72 CDN 74 USA 75 USA 78 USA
Remarks: subgen. Penstemon, sect. Penstemon
Synonyms: hidden
= Bartramia concinna Salisb.; Prodr. Stirp. Chap. Allerton 99 (1796)
= Chelone hirsuta L.; Sp. Pl.: 611 (1753), nom. cons.
= Chelone pubescens Sweet; Hort. Brit. ed. I. 305 (1827)
= Penstemon amplexicaulis Moench; Methodus (Moench) 442 (1794)
= Penstemon digitalis var. pubescens (Aiton) Trautv.; Bull. Sci. Acad. Imp. Sci. Saint-Pétersbourg 5: 345 (1839)
= Penstemon hirsutus f. albiflorus Farw.; Amer. Midl. Naturalist 11: 68 (1928)
= Penstemon latifolius Hoffmanns.; Verz. Pfl.-Kult. 98 (1824)
= Penstemon longifolius Scheele; Linnaea 21: 764 (1848)
= Penstemon mackayanus Knowles & Westc.; Flor. Cab. 2: 117 (1838)
= Penstemon pentstemon (L.) Britton; Mem. Torr. Bot. Club, v.201 (1891)
= Penstemon pubescens Aiton; Hort. Kew. ed. I. 2: 360 (1789)
= Penstemon pubescens var. angustifolius Aiton; Hort. Kew. 2: 360 (1789)
= Penstemon pubescens var. latifolia Aiton; Hort. Kew. 2: 360 (1789)
species :
Penstemon humilis
Nutt. ex A.Gray; Proc. Amer. Acad. Arts 6: 69 (1862)
Name: Low beardtongue
Distribution: USA (California, Colorado, Idaho, New Mexico, Nevada, Oregon, Utah, Washington State, Wyoming)
73 USA 76 USA 77 USA
Remarks: subgen. Penstemon, sect. Penstemon
Synonyms: hidden
= Penstemon cinereus Piper; Contrib. US. Nat. Herb. 16: 209 (1913)
= Penstemon cinereus subsp. foliatus D.D.Keck; Amer. Midl. Naturalist 33: 188 (1945)
= Penstemon collinus A.Nelson; Bull. Torrey Bot. Club 25: 279 (1898)
= Penstemon decurvus Pennell ex Crosswh.; Leafl. West. Bot. 10: 172 (1965)
= Penstemon humilis var. deserticus S.L.Welsh; Rhodora, 95(883-884): 416 (1993) (desereticus)
= Penstemon puberulus M.E.Jones; Contr. W. Bot. 12: 64 (1908), nom. illeg.
variant :
var. brevifolius
A.Gray; Syn. Fl. N. Amer. 2, pt. 1: 267 (1878)
Distribution: USA (Utah)
76 USA
Synonyms: hidden
= Penstemon brevifolius (A.Gray) A.Nelson; Coult. & Nelson, Man. Bot. Rocky Mt., ed. 2: 445 (1909)
= Penstemon humilis subsp. brevifolius (A.Gray) D.D.Keck; Amer. Midl. Naturalist 33: 184 (1945)
variant :
var. obtusifolius
(Pennell) Reveal; Great Basin Nat. 35(4): 369 (1975)
Distribution: USA (Utah)
76 USA
Synonyms: hidden
= Penstemon humilis subsp. obtusifolius (Pennell) D.D.Keck; Amer. Midl. Naturalist 33: 184 (1945)
= Penstemon obtusifolius Pennell; Contrib. US. Nat. Herb. 20: 370 (1920)
species :
Penstemon idahoensis
N.D.Atwood & S.L.Welsh; Great Basin Nat. 48(4): 496 (1988)
Name: Idaho beardtongue
Distribution: USA (Idaho, Utah)
73 USA 76 USA
Remarks: subgen. Penstemon, sect. Glabri
species :
Penstemon imberbis
(Kunth) Trautv.; Bull. Sci. Acad. Petersb. 5: 345 (1839)
Distribution: Mexico (Aguascalientes, Chihuahua, Colima, Guanajuato, Hidalgo, Jalisco, Mexico State, Michoacan, Morelos, Queretaro, San Luis Potosi, Zacatecas)
79 MEX
Synonyms: hidden
= Chelone imberbis Kunth; Nov. Gen. et Sp. 2: 363 (1818)
= Chelone inermis Poir.; Cuvier, Dict. Sci. Nat. ed. 2. 38: 385 (1825)
= Penstemon humboldtii G.Don; Gen. Syst. 4: 640 (1837)
= Penstemon inermis (Poir.) Poir.; Dict. Sci. Nat., ed. 2. [F. Cuvier] 38: 385 (1825)
species :
Penstemon immanifestus
N.H.Holmgren; Brittonia 30(3): 334 (1978)
Name: Steptoe Valley beardtongue
Distribution: USA (E-Nevada, W-Utah)
76 USA
Remarks: subgen. Penstemon, sect. Coerulei
species :
Penstemon incertus
Brandegee; Coult. Bot. Gaz. 27: 454 (1899)
Name: Mojave beardtongue
Distribution: USA (California)
76 USA
Remarks: subgen. Penstemon, sect. Spectabiles
Synonyms: hidden
= Penstemon fruticiformis var. incertus (Brandegee) Munz & I.M.Johnst.; Bull. S. Calif. Acad. Sci. 23: 33 (1924)
species :
Penstemon inflatus
Crosswh.; Amer. Midl. Naturalist 74: 436 (1965)
Name: Inflated beardtongue
Distribution: USA (New Mexico)
77 USA
Remarks: subgen. Penstemon, sect. Penstemon
species :
Penstemon isophyllus
B.L.Rob.; Proc. Bost. Soc. Nat. Hist. 31: 267 (1904)
Distribution: Mexico (Jalisco, Nayarit, Oaxaca, Puebla, Veracruz)
79 MEX
species :
Penstemon jamesii
Benth.; Prodr. [A. DC.] 10: 325 (1846)
Name: James´ beardtongue
Distribution: USA (Colorado, Kansas, New Mexico, Texas); Mexico (Coahuila, Nuevo Leon)
73 USA 74 USA 77 USA 79 MEX
Remarks: subgen. Penstemon, sect. Cristati
Synonyms: hidden
= Penstemon albidus Torr.; Ann. Lyceum Nat. Hist. New York 2: 229 (1827), nom. illeg.
= Penstemon similis A.Nelson; Bull. Torrey Bot. Club 25: 548 (1898)
species :
Penstemon janishiae
N.H.Holmgren; Brittonia 31(2): 223 (1979)
Name: Antelope Valley beardtongue
Distribution: USA (California, Idaho, Nevada, Oregon)
73 USA 76 USA
Remarks: subgen. Penstemon, sect. Cristati
species :
Penstemon kingii
S.Watson; Bot. King´s Exp. 222 (1871)
Name: King´s beardtongue
Distribution: USA (Nevada, Oregon)
73 USA 76 USA
Remarks: subgen. Penstemon, sect. Saccanthera
Synonyms: hidden
= Penstemon kingii var. glaucus Kellogg; Proc. Calif. Acad. Sci. 5: 39 (1873)
= Penstemon nyeensis Crosswh.; Leafl. W. Bot. 10: 171 (1965)
species :
Penstemon kralii
D.Estes; J. Bot. Res. Inst. Texas 6(1): 1 (2012)
Distribution: USA (Alabama, Tennessee)
78 USA
Remarks: subgen. Penstemon, sect. Penstemon
species :
Penstemon labrosus
(A.Gray) Mast. ex Hook.f.; Bot. Mag. 110: t. 6738 (1884)
Name: San Gabriel beardtongue
Distribution: USA (S-California); Mexico (Baja California Norte)
76 USA 79 MEX
Remarks: subgen. Penstemon, sect. Elmigera
Synonyms: hidden
= Penstemon barbatus var. labrosus A.Gray; Bot. California [W. H. Brewer] 1: 622 (1876)
species :
Penstemon laetus
A.Gray; Proc. Amer. Acad. Arts 6: 76 (1866)
Name: Western gray beardtongue
Distribution: USA (California)
76 USA
Remarks: subgen. Penstemon, sect. Saccanthera
Synonyms: hidden
= Penstemon laetus f. albus P.C.Everett; Aliso 2: 181 (1950)
variant :
var. leptosepalus
Greene ex A.Gray; Syn. Fl. N. Amer., ed. 2. 2(1): 442 (1886)
Distribution: USA (California)
76 USA
Synonyms: hidden
= Penstemon laetus subsp. leptosepalus (Greene ex A.Gray) D.D.Keck; Univ. Calif. Publ. Bot. 16: 393 (1932)
variant :
var. sagittatus
(D.D.Keck) McMinn; Man. Calif. Shrubs 518 (1939)
Distribution: USA (California, Oregon)
73 USA 76 USA
Synonyms: hidden
= Penstemon laetus subsp. sagittatus D.D.Keck; Univ. Calif. Publ. Bot. 16: 395, fig. 12 (1932)
= Penstemon sagittatus (D.D.Keck) Pennell; Notul. Nat. Acad. Nat. Sci. Philadelphia 71: 15 (1941)
species :
Penstemon laevigatus
Aiton; Hort. Kew. ed. I. 2: 361 (1789)
Name: Eastern smooth beardtongue
Distribution: USA (Alabama, Arkansas, Connecticut, District of Columbia, Delaware, Florida, Georgia, Kentucky, Louisiana, Massachusetts, Maryland, Mississippi, North Carolina, New Jersey, Ohio, Pennsylvania, South Carolina, Tennessee, Virginia, West Virginia)
75 USA 78 USA
Remarks: subgen. Penstemon, sect. Penstemon
Synonyms: hidden
= Bartramia pulchella Salisb.; Prodr. Stirp. Chap. Allerton 99 (1796)
= Chelone laevigata J.Thomps.; Bot. Displ.: t. 4 (1798)
= Chelone laevigata Pers.; Syn. Pl. 2: 169 (1806)
= Chelone pentstemon L.; Sp. Pl.: 612 (1753)
= Penstemon glaucophyllus Scheele; Linnaea 21: 763 (1848)
= Penstemon laevigatus var. canescens Britton; Mem. Torrey Bot. Club 2: 30 (1890)
= Penstemon nuttallii L.C.Beck; Amer. J. Sci. Arts 14: 120 (1828)
= Penstemon pentstemon (L.) MacMill.; Bull. Torrey Bot. Club 19: 15 (1892), nom. inval.
species :
Penstemon laevis
Pennell; Contrib. US. Nat. Herb. 20: 347 (1920)
Name: Southwestern beardtongue
Distribution: USA (Arizona, Utah)
76 USA
Remarks: subgen. Penstemon, sect. Glabri
species :
Penstemon lanceolatus
Benth.; Pl. Hartw. 22 (1846)
Name: Lanceleaf beardtongue
Distribution: USA (Arizona, New Mexico, Texas); Mexico (Aguascalientes, Chihuahua, Coahuila, Durango, Jalisco, Nayarit, Nuevo Leon, San Luis Potosi, Sonora, Tamaulipas, Veracruz, Zacatecas)
76 USA 77 USA 79 MEX
Remarks: subgen. Penstemon, sect. Chamaeleon
Synonyms: hidden
= Penstemon ramosus Crosswh.; Sida 2: 341 (1966), nom. nov. for P. pauciflorus Greene
= Penstemon pauciflorus Greene; Coult. Bot. Gaz. 6: 218 (1881)
species :
Penstemon laricifolius
Hook. & Arn.; Bot. Beech. Voy. 376 (1839)
Name: Larchleaf beardtongue
Distribution: USA (Idaho, Montana, Wyoming)
73 USA
Remarks: subgen. Penstemon, sect. Cristati
Synonyms: hidden
= Penstemon filifolius Nutt. ex Benth.; Prodr. [A. DC.] 10: 322 (1846)
variant :
var. exilifolius
(A.Nelson) Payson; Univ. Wyoming Publ. Sci., Bot. 1: 97 (1924)
Distribution: USA (Colorado, Wyoming)
73 USA
Synonyms: hidden
= Penstemon exilifolius A.Nelson; Bull. Torrey Bot. Club 230 (1901)
= Penstemon exilifolius var. desertus A.Nelson; Bull. Torrey Bot. Club 28: 231 (1901)
= Penstemon laricifolius subsp. exilifolius (A.Nelson) D.D.Keck; Bull. Torrey Bot. Club 64: 381 (1937)
species :
Penstemon laxiflorus
Pennell; Acad. Nat. Sci. Philad. Monogr. 1, Scroph. 229 (1935)
Name: Nodding beardtongue
Distribution: USA (Alabama, Arkansas, Florida, Georgia, Louisiana, Mississippi, Oklahoma, Texas)
74 USA 77 USA 78 USA
Remarks: subgen. Penstemon, sect. Penstemon
Synonyms: hidden
= Penstemon australis subsp. laxiflorus (Pennell) R.W.Benn.; Phytologia 9: 58 (1963)
= Penstemon australis var. ameles Crosswh.
species :
Penstemon laxus
A.Nelson; Bot. Gaz. 54: 147 (1912)
Name: Tufted beardtongue
Distribution: USA (SC-Idaho)
Remarks: subgen. Penstemon, sect. Penstemon
Synonyms: hidden
= Penstemon watsonii subsp. laxus (A.Nelson) D.D.Keck; Amer. Midl. Naturalist 23: 610 (1940)
species :
Penstemon leiophyllus
Pennell; Contrib. US. Nat. Herb. 20: 346 (1920)
Name: Smoothleaf beardtongue
Distribution: USA (Utah)
76 USA
Remarks: subgen. Penstemon, sect. Glabri
variant :
var. francisci-pennellii
(Crosswh.) N.H.Holmgren; Cronquist et al., Intermountain Fl., Vasc. Pl. Intermountain West, U. S. A. 4: 432 (1984)
Distribution: USA (Nevada)
76 USA
Synonyms: hidden
= Penstemon francisci-pennellii Crosswh.; Leafl. West. Bot. 10: 170 (1965)
variant :
var. keckii
(Clokey) N.H.Holmgren; Cronquist et al., Intermountain Fl., Vasc. Pl. Intermountain West, U. S. A. 4: 432 (1984)
Name: Keck´s beardtongue
Distribution: USA (Nevada)
76 USA
Synonyms: hidden
= Penstemon keckii Clokey; Madroño 4: 128 (1937)
species :
Penstemon lemhiensis
(D.D.Keck) D.D.Keck & Cronquist; Brittonia 8: 248 (1957)
Name: Lemhi beardtongue
Distribution: USA (Idaho, Montana)
73 USA
Remarks: subgen. Penstemon, sect. Glabri
Synonyms: hidden
= Penstemon speciosus subsp. lemhiensis D.D.Keck; Amer. Midl. Naturalist 23: 612 (1940)
species :
Penstemon lentus
Pennell; Contrib. US. Nat. Herb. 20: 359 (1920)
Name: Handsome beardtongue
Distribution: USA (Arizona, Colorado, New Mexico, Utah)
73 USA 76 USA 77 USA
Remarks: subgen. Penstemon, sect. Coerulei
variant :
var. albiflorus
(D.D.Keck) Reveal; Great Basin Nat. 35(4): 370 (1975)
Distribution: USA (Utah)
76 USA
Synonyms: hidden
= Penstemon lentus subsp. albiflorus D.D.Keck; Amer. Midl. Naturalist 23: 616 (1940)
species :
Penstemon leonardii
Rydb.; Bull. Torr. Bot. Club 40: 483 (1913)
Name: Leonard´s beardtongue
Distribution: USA (Idaho, Utah)
73 USA 76 USA
Remarks: subgen. Penstemon, sect. Saccanthera
variant :
var. higginsii
Neese; Great Basin Nat. 46(3): 459 (1986)
Name: Higgins´ beardtongue
Distribution: USA (Utah)
76 USA
Synonyms: hidden
= Penstemon higginsii (Neese) N.H.Holmgren & N.D.Atwood; Utah Fl., ed. 3. 625 (2003)
variant :
var. patricus
(N.H.Holmgren) Neese; Great Basin Nat. 46(3): 460 (1986)
Distribution: USA (Nevada, Utah)
76 USA
Synonyms: hidden
= Penstemon patricus N.H.Holmgren; Brittonia 31(2): 238 (1979)
species :
Penstemon leonensis
Straw; Bol. Soc. Bot. Mexico, No. 27, 8 (1962)
Distribution: Mexico (Aguascalientes, Coahuila, Jalisco, Nuevo Leon, Tamaulipas, Zacatecas)
79 MEX
species :
Penstemon linarioides
A.Gray; Torr. Bot. Mex. Bound. 112 (1858 publ. 1859)
Name: Toadflax beardtongue
Distribution: USA (Arizona, New Mexico)
76 USA 77 USA
Remarks: subgen. Penstemon, sect. Caespitosi
Synonyms: hidden
= Penstemon linarioides subsp. compactifolius D.D.Keck; Bull. Torr. Bot. Club 64: 376 (1937)
variant :
var. coloradoensis
(A.Nelson) C.C.Freeman; PhytoKeys 80: 35 (2017)
Distribution: USA (Arizona, Colorado, New Mexico)
73 USA 76 USA 77 USA
Synonyms: hidden
= Penstemon coloradoensis A.Nelson; Bull. Torrey Bot. Club 26: 355 (1899)
= Penstemon coloradoensis subsp. sileri Pennell; Contr. U.S. Natl. Herb. 20: 363 (1920)
= Penstemon linarioides subsp. coloradoensis (A.Nelson) D.D.Keck; Bull. Torrey Bot. Club 64: 375 (1937)
variant :
var. maguirei
(D.D.Keck) A.Nelson; Publ. Univ. Wyoming 3: 105 (1937)
Name: Maguire´s beardtongue
Distribution: USA (Arizona, New Mexico)
76 USA 77 USA
Synonyms: hidden
= Penstemon linarioides subsp. maguirei D.D.Keck; Bull. Torr. Bot. Club 64: 378 (1937)
variant :
var. sileri
A.Gray; Syn. Fl. N. Amer. 2(1): 270 (1878)
Name: Siler´s beardtongue
Distribution: USA (Arizona, Nevada, Utah); Mexico (Baja California Norte, Sonora)
76 USA 79 MEX
Synonyms: hidden
= Penstemon linarioides subsp. sileri (A.Gray) D.D.Keck; Bull. Torr. Bot. Club 64: 374 (1937)
= Penstemon linarioides var. viridis D.D.Keck; Bull. Torr. Bot. Club 64: 375 (1937)
species :
Penstemon longiflorus
(Pennell) S.L.Clark; Great Basin Nat. 35(4): 434 (1975)
Name: Longflower beardtongue
Distribution: USA (Utah)
76 USA
Remarks: subgen. Penstemon, sect. Glabri
Synonyms: hidden
= Penstemon cyananthus var. longiflorus (Pennell) Neese
= Penstemon cyananthus subsp. longiflorus Pennell; Contr. U. S. Natl. Herb. 20(9): 353 (1920)
species :
Penstemon luculentus
R.L.Johnson & M.R.Stevens; PhytoKeys 63: 49 (2016), nom. nov.
Name: Fremont´s beardtongue
Distribution: USA (Colorado)
73 USA
Remarks: subgen. Penstemon, sect. Glabri
Synonyms: hidden
= Penstemon fremontii var. glabrescens Dorn & Lichvar; Madroño 37(3): 195 (1990)
species :
Penstemon luteus
G.L.Nesom; Phytologia 71(5): 333 (1991 publ. 1992)
Distribution: Mexico (Coahuila, Nuevo Leon)
79 MEX
species :
Penstemon lyalli
(A.Gray) A.Gray; Syn. Fl. North America. ed. 2, 2: Pt. 1, 440 (1886)
Name: Lyall´s beardtongue
Distribution: Canada (Alberta, British Columbia); USA (Idaho, Montana, Washington State)
71 CDN 73 USA
Remarks: subgen. Dasanthera, sect. Erianthera
Synonyms: hidden
= Penstemon linearifolius J.M.Coult. & Fisher; Bot. Gaz. 18: 302 (1893)
= Penstemon lyallii var. linearifolius (J.M.Coult. & Fisher) Krautter; Contr. Bot. Lab. Morris Arbor. Univ. Pennsylvania 3: 104 (1908)
= Penstemon menziesii var. lyallii A.Gray; Proc. Amer. Acad. Arts 6: 76 (1866)
species :
Penstemon marcusii
(D.D.Keck) N.H.Holmgren; Brittonia 31(1): 105 (1979)
Name: Marcus´ beardtongue
Distribution: USA (Utah)
76 USA
Remarks: subgen. Penstemon, sect. Cristati
Synonyms: hidden
= Penstemon moffatii subsp. marcusii D.D.Keck; Bull. Torr. Bot. Club 65: 243 (1938)
= Penstemon pseudohumilis M.E.Jones; Contr. W. Bot. 12: 65 (1908), non Rydb. 1900
species :
Penstemon mensarum
Pennell; Contrib. US. Nat. Herb. 20: 380 (1920)
Name: Tiger beardtongue
Distribution: USA (Colorado)
73 USA
Remarks: subgen. Penstemon, sect. Glabri
species :
Penstemon metcalfei
Wooton & Standl.; Torreya 9: 145 (1909)
Name: Metcalfe´s beardtongue
Distribution: USA (New Mexico: A. L. Grant Co., Sierra Co.)
76 USA 77 USA
Remarks: subgen. Penstemon, sect. Penstemon
Synonyms: hidden
= Penstemon puberulus Wooton & Standl.; Bull. Torrey Bot. Club 36: 112 (1909), nom. illeg., non M. E. Jones
species :
Penstemon miniatus
Lindl.; Bot. Reg. (1847) t. 14
Distribution: Mexico (Aguascalientes, Chihuahua, Colima, Ciudad de Mexico, Durango, Guanajuato, Guerrero, Hidalgo, Jalisco, Mexico State, Michoacan, Morelos, Nayarit, Nuevo Leon, Oaxaca, Puebla, Queretaro, San Luis Potosi, Sinaloa, Sonora, Tamaulipas, Tlaxcala, Veracruz, Zacatecas)
79 MEX
variant :
var. apateticus
(Straw) C.C.Freeman; PhytoKeys 80: 36 (2017)
Distribution: Mexico (Veracruz, Durango, Chihuahua, Michoacan, Sinaloa, Aguascalientes, Jalisco to Queretaro, Veracruz, Oaxaca)
79 MEX
Synonyms: hidden
= Penstemon apateticus subsp. durangensis Straw; Bol. Soc. Bot. México no. 24: 43 (1959)
= Penstemon apateticus Straw; Bol. Soc. Bot. México no. 24: 42 (1959)
= Penstemon miniatus subsp. apateticus (Straw) Straw; Brittonia 36(1): 67 (1984)
variant :
var. townsendianus
(Straw) C.C.Freeman; PhytoKeys 80: 36 (2017)
Distribution: Mexico
79 MEX
Synonyms: hidden
= Penstemon miniatus subsp. townsendianus (Straw) Straw; Brittonia 36(1): 67 (1984)
= Penstemon apateticus subsp. townsendianus Straw; Bol. Soc. Bot. México 24: 44 (1959)
species :
Penstemon minutifolius
Straw
Distribution: Mexico (Durango, Jalisco, Oaxaca, Puebla, Sinaloa, Zacatecas)
79 MEX
Remarks: provisionally accepted name
species :
Penstemon miser
A.Gray; Syn. Fl. N. Amer., ed. 2, 2(1): 441 (1886)
Name: Malheur beardtongue
Distribution: USA (Idaho, Oregon)
73 USA
Remarks: subgen. Penstemon, sect. Cristati
species :
Penstemon moffattii
Eastw.; Zoe 4: 9 (1893)
Name: Moffatt´s beardtongue
Distribution: USA (Colorado, Utah)
73 USA 76 USA
Remarks: subgen. Penstemon, sect. Cristati
Synonyms: hidden
= Penstemon moffatii subsp. paysonii (Pennell) D.D.Keck; Bull. Torrey Bot. Club 65: 243 (1938)
= Penstemon moffattii subsp. paysonii (Pennell) D.D.Keck; Bull. Torr. Bot. Club 65: 243 (1938)
= Penstemon paysonii Pennell; Contr. U. S. Natl. Herb. 20: 312 (1920)
species :
Penstemon mohinoranus
Straw; Bol. Soc. Bot. Mexico, No. 27, 15 (1962)
Distribution: Mexico (Chihuahua)
79 MEX
species :
Penstemon monoensis
A.Heller; Muhlenbergia 2: 246 (1906)
Name: Mono beardtongue
Distribution: USA (E-California)
76 USA
Remarks: subgen. Penstemon, sect. Cristati
Synonyms: hidden
= Penstemon divergens M.E.Jones; Contr. W. Bot. 12: 64 (1908)
species :
Penstemon montanus
Greene; Pittonia 2: 240 (1892)
Name: Cordroot beardtongue
Distribution: USA (Idaho, Montana, Utah, Wyoming)
73 USA 76 USA
Remarks: subgen. Dasanthera, sect. Erianthera
Synonyms: hidden
= Penstemon woodsii A.Nelson; Bot. Gaz. 52: 277 (1911)
variant :
var. idahoensis
(Pennell & D.D.Keck) Cronquist; Vasc. Pl. Pacif. N. W. [C. L. Hitchcock & al.] 4: 394 (1959)
Name: Central Idaho beardtongue
Distribution: USA (Idaho)
73 USA
Synonyms: hidden
= Penstemon montanus subsp. idahoensis D.D.Keck; Brittonia 8: 247 (1957)
species :
Penstemon moriahensis
N.H.Holmgren; Brittonia 30(4): 422 (1978)
Name: Mt. Moriah beardtongue
Distribution: USA (Nevada)
76 USA
Remarks: subgen. Penstemon, sect. Glabri
species :
Penstemon mucronatus
N.H.Holmgren; Brittonia 31(2): 234 (1979)
Name: Mucronate beardtongue
Distribution: USA (Colorado, Utah, Wyoming)
73 USA 76 USA
Remarks: subgen. Penstemon, sect. Coerulei
Synonyms: hidden
= Penstemon pachyphyllus var. mucronatus (N.H.Holmgren) Neese; Great Basin Nat. 46(3): 460 (1986)
species :
Penstemon multiflorus
(Benth.) Chapm. ex Small; Fl. S.E. U.S.: 1061 (1903)
Name: Manyflower beardtongue
Distribution: USA (S-Alabama, Florida, S-Georgia)
78 USA
Remarks: subgen. Penstemon, sect. Penstemon
Synonyms: hidden
= Penstemon pubescens var. multiflorus Benth.; Prodr. [A. DC.] 10: 327 (1846)
species :
Penstemon murrayanus
Hook.; Bot. Mag. t. 3472 (1836)
Name: Scarlet beardtongue
Distribution: USA (Arkansas, Louisiana, Oklahoma, Texas)
74 USA 77 USA 78 USA
Remarks: subgen. Penstemon, sect. Coerulei
species :
Penstemon nanus
D.D.Keck; Am. Midl. Naturalist 23: 607 (1940)
Name: Low beardtongue
Distribution: USA (Utah)
76 USA
Remarks: subgen. Penstemon, sect. Cristati
species :
Penstemon navajoa
N.H.Holmgren; Brittonia 30(4): 419 (1978)
Name: Navajo beardtongue
Distribution: USA (Utah)
76 USA
Remarks: subgen. Penstemon, sect. Glabri
species :
Penstemon neomexicanus
Wooton & Standl.; Contrib. US. Nat. Herb. 16: 172 (1913)
Name: New Mexico beardtongue
Distribution: USA (New Mexico); Mexico (Chihuahua)
77 USA 79 MEX
Remarks: subgen. Penstemon, sect. Glabri
species :
Penstemon neotericus
D.D.Keck; Univ. Calif. Publ. Bot. 16: 398 (1932)
Name: Plumas County beardtongue
Distribution: USA (California)
76 USA
Remarks: subgen. Penstemon, sect. Saccanthera
species :
Penstemon newberryi
A.Gray; Pacif. Rail. Rep. 6: 82 (1857)
Name: Mountain pride
Distribution: USA (California, Nevada)
76 USA
Remarks: subgen. Dasanthera, sect. Erianthera
Synonyms: hidden
= Penstemon menziesii f. newberryi (A.Gray) Voss; Vilm. Blumengärtn. ed. 3. 1: 765 (1894)
= Penstemon menziesii var. newberryi (A.Gray) A.Gray; Proc. Amer. Acad. Arts 6: 57 (1862)
= Penstemon menziesii var. robinsonii Mast.; Gard. Chron. 1872: 969 (1872)
= Penstemon newberryi f. humilior Sealy; Bot. Mag. 165: t. 4 (1948)
variant :
var. berryi
(Eastw.) N.H.Holmgren; Brittonia 44(4): 482 (1992)
Name: Berry´s beardtongue
Distribution: USA (California, Oregon)
73 USA 76 USA
Synonyms: hidden
= Penstemon berryi Eastw.; Bull. Torrey Bot. Club 209 (1905)
= Penstemon newberryi subsp. berryi (Eastw.) D.D.Keck; Abrams, Ill. Fl. Pacific States 3: 768 (1951)
variant :
var. sonomensis
(Greene) Jeps.; Fl. W. Calif. [Jeps.] 401 (1901)
Name: Sonoma beardtongue
Distribution: USA (California)
76 USA
Synonyms: hidden
= Penstemon newberryi subsp. sonomensis (Greene) D.D.Keck; Abrams, Ill. Fl. Pacific States 3: 768 (1951)
= Penstemon sonomensis Greene; Pittonia 2: 218 (1891), et Man. Bot. San Franc. Bay 274 (1894)
species :
Penstemon nitidus
Douglas ex Benth.; Prodr. [A. DC.] 10: 323 (1846)
Name: Waxleaf beardtongue
Distribution: Canada (Alberta, British Columbia, Manitoba, Saskatchewan); USA (Colorado, Montana, North Dakota, South Dakota, Wyoming)
71 CDN 73 USA 74 USA
Remarks: subgen. Penstemon, sect. Coerulei
Synonyms: hidden
= Penstemon nitidus var. major Benth.; Prodr. [A. DC.] 10: 323 (1846)
variant :
var. polyphyllus
(Pennell) Cronquist; Vasc. Pl. Pacif. N. W. [C. L. Hitchcock & al.] 4: 395 (1959)
Distribution: USA (Idaho, Montana)
73 USA
Synonyms: hidden
= Penstemon nitidus subsp. polyphyllus Pennell; Notul. Nat. Acad. Nat. Sci. Philadelphia no. 95: 6 (1942)
species :
Penstemon nudiflorus
A.Gray; Proc. Amer. Acad. Arts 20: 206 (1885)
Name: Flagstaff beardtongue
Distribution: USA (Arizona)
76 USA
Remarks: subgen. Penstemon, sect. Glabri
species :
Penstemon occiduus
Straw; Bot. Soc. Bot. Mexico, No. 27, 7 (1962)
Distribution: Mexico (Chihuahua, Durango)
79 MEX
species :
Penstemon oklahomensis
Pennell; Acad. Nat. Sci. Philad. Monogr. 1, Scroph. 237 (1935)
Name: Oklahoma beardtongue
Distribution: USA (Oklahoma)
74 USA
Remarks: subgen. Penstemon, sect. Penstemon
species :
Penstemon oliganthus
Wooton & Standl.; Contrib. US. Nat. Herb. 16: 172 (1913)
Name: Apache beardtongue
Distribution: USA (Arizona, New Mexico)
76 USA 77 USA
Remarks: subgen. Penstemon, sect. Penstemon
species :
Penstemon ophianthus
Pennell; Contrib. US. Nat. Herb. 20: 343 (1920)
Name: Arizona beardtongue
Distribution: USA (Arizona, Colorado, New Mexico, Utah)
73 USA 76 USA 77 USA
Remarks: subgen. Penstemon, sect. Cristati
Synonyms: hidden
= Penstemon jamesii subsp. ophianthus (Pennell) D.D.Keck; Bull. Torr. Bot. Club 65: 240 (1938)
= Penstemon pilosigulatus A.Nelson; Publ. Sci. Univ. Wyoming, Bot. 1: 130 (1926)
species :
Penstemon osterhoutii
Pennell; Contrib. US. Nat. Herb. 20: 358 (1920)
Name: Osterhout´s beardtongue
Distribution: USA (Colorado)
73 USA
Remarks: subgen. Penstemon, sect. Coerulei
species :
Penstemon ovatus
Douglas; Bot. Mag. t. 2903 (1829)
Name: Ovate-leaf beardtongue
Distribution: Canada (British Columbia); USA (Oregon, Washington State)
71 CDN 73 USA
Remarks: subgen. Penstemon, sect. Penstemon
Synonyms: hidden
= Penstemon leptophyllus Rydb.; Fl. Rocky Mts.: 773 (1917)
species :
Penstemon pachyphyllus
A.Gray ex Rydb.; Fl. Rocky Mts. 770 (1917)
Name: Thickleaf beardtongue
Distribution: USA (New Mexico, Utah)
76 USA 77 USA
Remarks: subgen. Penstemon, sect. Coerulei
variant :
var. congestus
(M.E.Jones) N.H.Holmgren; Brittonia 31(1): 105 (1979)
Distribution: USA (Arizona, Nevada, Utah)
76 USA
Synonyms: hidden
= Penstemon acuminatus var. congestus M.E.Jones; Proc. Calif. Acad. Sci., ser. 2, 5: 714 (1895)
= Penstemon congestus (M.E.Jones) Pennell; Ann. Carnegie Mus. 26: 331 (1937)
= Penstemon pachyphyllus subsp. congestus (M.E.Jones) D.D.Keck in Kearney & Peebles; J. Wash. Acad. Sci. 29: 490 (1939)
species :
Penstemon pahutensis
N.H.Holmgren; Aliso. 7(3): 351 (1971)
Name: Pahute Mesa beardtongue
Distribution: USA (California, Nevada)
76 USA
Remarks: subgen. Penstemon, sect. Glabri
species :
Penstemon pallidus
Small; Fl. S. E. U. S. 1060 (1903)
Name: Pale beardtongue
Distribution: Canada (Ontario); USA (Alabama, Arkansas, Connecticut, District of Columbia, Georgia, Iowa, Illinois, Indiana, Kansas, Kentucky, Massachusetts, Maryland, Maine, Michigan, Minnesota, Missouri, Mississippi, North Carolina, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Tennessee, Virginia, Vermont, Wisconsin, West Virginia); Mexico (Veracruz)
72 CDN 74 USA 75 USA 78 USA 79 MEX
Remarks: subgen. Penstemon, sect. Penstemon
Synonyms: hidden
= Penstemon arkansanus var. pubescens Pennell; Proc. Acad. Nat. Sci. Philadelphia 73: 494 (1922)
= Penstemon brevisepalus f. heterolasius Fernald; Rhodora 51: 84 (1949)
species :
Penstemon palmeri
A.Gray; Proc. Amer. Acad. Arts 7: 379 (1868)
Name: Palmer´s beardtongue
Distribution: USA (Arizona, California, Colorado, Idaho, New Mexico, Nevada, Utah, Washington State, Wyoming)
73 USA 76 USA 77 USA
Remarks: subgen. Penstemon, sect. Spectabiles
variant :
var. eglandulosus
(D.D.Keck) N.H.Holmgren; Brittonia 31(1): 105 (1979)
Name: Scented beardtongue
Distribution: USA (Arizona, Utah)
76 USA
Synonyms: hidden
= Penstemon palmeri subsp. eglandulosus D.D.Keck; Amer. Midl. Naturalist 18: 797 (1937)
variant :
var. macranthus
(Eastw.) N.H.Holmgren; Brittonia 31(1): 105 (1979)
Distribution: USA (Nevada)
76 USA
Synonyms: hidden
= Penstemon macranthus Eastw.; Bull. Torrey Bot. Club 207 (1905)
species :
Penstemon papillatus
J.T.Howell; Leafl. W. Bot. 2: 119 (1938)
Name: Inyo beardtongue
Distribution: USA (E-California)
76 USA
Remarks: subgen. Penstemon, sect. Saccanthera
species :
Penstemon parryi
A.Gray; Syn. Fl. N. Am. 2: I. 264 (1878)
Name: Parry´s beardtongue
Distribution: USA (Arizona); Mexico (Chihuahua, Sonora)
76 USA 79 MEX
Remarks: subgen. Penstemon, sect. Gentianoides
Synonyms: hidden
= Penstemon shantzii A.Nelson; Amer. J. Bot. 23: 270 (1936)
= Penstemon shantzii var. incognitus A.Nelson; Amer. J. Bot. 25: 116 (1938)
species :
Penstemon parvulus
(A.Gray) Krautter; Trans. & Proc. Bot. Soc. Pennsylv. 2: 193 (1911)
Distribution: USA (N-California, SW-Oregon)
73 USA 76 USA
Remarks: subgen. Penstemon, sect. Saccanthera
Synonyms: hidden
= Penstemon azureus subsp. parvulus (A.Gray) D.D.Keck; Univ. Calif. Publ. Bot. 16: 406 (1932)
= Penstemon azureus var. parvulus A.Gray; Syn. Fl. N. Amer. 2(1): 272 (1878)
= Penstemon jaffrayanus var. parvulus (A.Gray) Jeps.; Man. Fl. Pl. Calif.: 917 (1925)
species :
Penstemon parvus
Pennell; Contrib. US, Nat. Herb. 20: 345 (1920)
Name: Aquarius Plateau beardtongue
Distribution: USA (Utah)
76 USA
Remarks: subgen. Penstemon, sect. Glabri
species :
Penstemon patens
(M.E.Jones) N.H.Holmgren; Brittonia 31(1): 106 (1979)
Name: Lone Pine beardtongue
Distribution: USA (California, Nevada)
76 USA
Remarks: subgen. Penstemon, sect. Gentianoides
Synonyms: hidden
= Penstemon confusus subsp. patens (M.E.Jones) D.D.Keck; Amer. Midl. Naturalist 18: 827 (1937)
= Penstemon confusus var. patens M.E.Jones; Contr. W. Bot. 12: 63 (1908)
species :
Penstemon payettensis
A.Nelson & J.F.Macbr.; Bot. Gaz. 62: 147 (1916)
Name: Payette beardtongue
Distribution: USA (Idaho, Montana, Oregon)
73 USA
Remarks: subgen. Penstemon, sect. Glabri
species :
Penstemon paysoniorum
D.D.Keck; Leafl. West. Bot. 5: 57 (1947)
Name: Payson´s beardtongue
Distribution: USA (Wyoming)
73 USA
Remarks: subgen. Penstemon, sect. Glabri
species :
Penstemon peckii
Pennell; Not. Nat. Acad. Nat. Sci. Philad., No. 71, 12 (1941)
Name: Peck´s beardtongue
Distribution: USA (Oregon)
73 USA
Remarks: subgen. Penstemon, sect. Penstemon
species :
Penstemon penlandii
W.A.Weber; Phytologia 60(6): 459 (1986)
Name: Penland´s beardtongue
Distribution: USA (Colorado)
73 USA
Remarks: subgen. Penstemon, sect. Glabri
species :
Penstemon pennellianus
D.D.Keck; Am. Midl. Naturalist 23: 614 (1940)
Name: Blue Mountain beardtongue
Distribution: USA (Oregon, Washington State)
73 USA
Remarks: subgen. Penstemon, sect. Glabri
species :
Penstemon perfoliatus
Brongn.; Hortic. Univ. (1844) cum ic. ex Benth. in DC. Prod. 10: 326
Distribution: Mexico (Oaxaca)
79 MEX
Synonyms: hidden
= Penstemon connatus Deppe ex Walp.; Allg. Gartenzeitung 12: 276 (1844)
= Penstemon cordatus M.Martens & Galeotti; Bull. Acad. Roy. Sci. Bruxelles 12(2): 17 (1845), nom. illeg.
= Penstemon verticillatus M.Martens & Galeotti; Bull. Acad. Roy. Sci. Bruxelles 12(2): 18 (1845)
species :
Penstemon perpulcher
A.Nelson; Bot. Gaz. 52: 273 (1911)
Name: Minidoka beardtongue
Distribution: USA (Idaho, Oregon)
73 USA
Remarks: subgen. Penstemon, sect. Glabri
Synonyms: hidden
= Penstemon minidokanus A.Nelson & J.F.Macbr.; Bot. Gaz. 62: 147 (1916)
= Penstemon pandus (A.Nelson & J.F.Macbr.) A.Nelson & J.F.Macbr.; Bot. Gaz. 65: 69 (1918)
= Penstemon perpulcher var. pandus A.Nelson & J.F.Macbr.; Bot. Gaz. 55: 382 (1913)
species :
Penstemon personatus
D.D.Keck; Madroño 3: 248 (1936)
Name: Closethroat beardtongue
Distribution: USA (California)
76 USA
Remarks: subgen. Dasanthera, sect. Erianthera
species :
Penstemon petiolatus
Brandegee; Coult. Bot. Gaz. 27: 455 (1899)
Name: Petiolate beardtongue
Distribution: USA (Arizona, Nevada, Utah)
76 USA
Remarks: subgen. Penstemon, sect. Petiolati
species :
Penstemon pinifolius
Greene; Coult. Bot. Gaz. 6: 218 (1881)
Name: Pine-leaf beardtongue
Distribution: USA (Arizona, New Mexico); Mexico (Chihuahua, Hidalgo, Queretaro, Sonora, Tamaulipas)
76 USA 77 USA 79 MEX
Remarks: subgen. Penstemon, sect. Caespitosi
species :
Penstemon pinorum
L.M.Shultz & J.S.Shultz; Brittonia 37(1): 98 (1985)
Name: Pine Valley beardtongue
Distribution: USA (Utah: Iron Co., Washington Co.)
73 USA 76 USA
Remarks: subgen. Penstemon, sect. Cristati
species :
Penstemon plagapineus
Straw; Bot. Soc. Bot. Mexico, No. 27, 19 (1962)
Distribution: Mexico (Durango, Nayarit, Sinaloa)
79 MEX
species :
Penstemon platyphyllus
Rydb.; Bull. Torr. Bot. Club 36: 690 (1909)
Name: Broad-leaf beardtongue
Distribution: USA (Nevada, Utah)
76 USA
Remarks: subgen. Penstemon, sect. Saccanthera
Synonyms: hidden
= Penstemon heterophyllus var. latifolius S.Watson; Botany (Fortieth Parallel) 222 (1871), non P. latifolius Hffmgg. 1824
= Penstemon latifolius (S.Watson) Krautter; Contr. Bot. Lab. Morris Arbor. Univ. Pennsylvania 3: 194 (1908), nom. illeg.
species :
Penstemon potosinus
Straw; Brittonia 15: 62 (1963)
Distribution: Mexico (San Luis Potosi, Zacatecas)
79 MEX
species :
Penstemon pratensis
Greene; Leafl. Bot. Obs. Crit. 1: 165 (1906)
Name: Western whiteflower beardtongue
Distribution: USA (Idaho, Nevada, Oregon)
73 USA 76 USA
Remarks: subgen. Penstemon, sect. Penstemon
species :
Penstemon procerus
Douglas ex Graham; Edinburgh N. Phil. J. 348 (1829)
Name: Pincushion beardtongue
Distribution: Alaska; Canada (Alberta, British Columbia, Manitoba, Saskatchewan, Yukon); USA (Colorado, Idaho, Montana, North Dakota, Oregon, Utah, Washington State, Wyoming)
70 ASK CDN 71 CDN 73 USA 74 USA 76 USA
Remarks: subgen. Penstemon, sect. Penstemon
Synonyms: hidden
= Lepteiris parviflora Raf.; New Fl. Am. 2: 73 (1836)
= Penstemon confertus var. procerus (Douglas ex Graham) Coville; Contr. U. S. Natl. Herb. 4: 169 (1893)
= Penstemon micranthus Nutt.; J. Acad. Philad. 7: 45 (1834)
= Penstemon pononii Anon.; Gard. Chron. 1872: 733 (1872)
= Penstemon procerus f. albescens B.Boivin; Naturaliste Canad. 93: 1062 (1967)
= Penstemon procerus f. jenkinsii B.Boivin; Naturaliste Canad. 87: 43 (1960)
= Penstemon procerus subsp. pulvereus Pennell; Contr. U.S. Natl. Herb. 20: 366 (1920)
= Penstemon procerus var. fimbriatus Regel; Gartenflora 21: 241 (1872)
= Penstemon procerus var. micrantus (Nutt.) M.E.Jones; Bull. Montana State Univ., Biol. Ser. 15: 45 (1910)
= Penstemon spicatus Anon.; Gard. Chron. 1872: 733 (1872)
= Penstemon tinctus Pennell; Notul. Nat. Acad. Nat. Sci. Philadelphia 71: 6 (1941)
variant :
var. aberrans
(M.E.Jones) A.Nelson; Bot. Gaz. 54: 146 (1912)
Distribution: USA (Utah)
76 USA
Synonyms: hidden
= Penstemon procerus subsp. aberrans (M.E.Jones) D.D.Keck; Amer. Midl. Naturalist 33: 146 (1945)
= Penstemon confertus var. aberrans M.E.Jones; Proc. Calif. Acad. Sci., ser. 2, 5: 715 (1895)
variant :
var. brachyanthus
(Pennell) Cronquist; Vasc. Pl. Pacif. N. W. [C. L. Hitchcock & al.] 4: 398 (1959)
Distribution: USA (California, Oregon)
73 USA 76 USA
Synonyms: hidden
= Penstemon brachyanthus Pennell; Not. Nat. Acad. Nat. Sci. Philad., No. 71, 3 (1941)
= Penstemon procerus subsp. brachyanthus (Pennell) D.D.Keck; Brittonia 8: 249 (1957)
= Penstemon tolmiei subsp. brachyanthus (Pennell) D.D.Keck; Amer. Midl. Naturalist 33: 148 (1945)
variant :
var. formosus
(A.Nelson) Cronquist; Vasc. Pl. Pacif. N. W. [C. L. Hitchcock & al.] 4: 398 (1959)
Distribution: USA (California, Idaho, Nevada, Oregon)
73 USA 76 USA
Synonyms: hidden
= Penstemon cacuminis Pennell; Notul. Nat. Acad. Nat. Sci. Philadelphia 71: 2 (1941)
= Penstemon formosus A.Nelson; Proc. Biol. Soc. Washington 17: 100 (1904), nom. illeg.
= Penstemon procerus subsp. formosus (A.Nelson) D.D.Keck; Brittonia 8: 249 (1957)
= Penstemon pulchellus Greene; Pittonia 3: 310 (1898), nom. illeg.
= Penstemon tolmiei subsp. formosus (A.Nelson) D.D.Keck; Amer. Midl. Naturalist 33: 147 (1945)
variant :
var. modestus
(Greene) N.H.Holmgren; Brittonia 31(1): 106 (1979)
Distribution: USA (Nevada)
76 USA
Synonyms: hidden
= Penstemon confertus var. modestus (Greene) Jeps.; Man. Fl. Pl. Calif.: 914 (1925)
= Penstemon modestus Greene; Leafl. Bot. Obs. Crit. 1: 165 (1906)
= Penstemon procerus subsp. modestus (Greene) D.D.Keck; Brittonia 8: 249 (1957)
= Penstemon tolmiei subsp. modestus (Greene) D.D.Keck; Amer. Midl. Naturalist 33: 148 (1945)
variant :
var. tolmiei
(Hook.) Cronquist; Vasc. Pl. Pacif. N. W. [C. L. Hitchcock & al.] 4: 398 (1959)
Name: Tolmie´s beardtongue
Distribution: Canada (British Columbia); USA (Washington State)
71 CDN 73 USA
Synonyms: hidden
= Penstemon procerus subsp. tolmiei (Hook.) D.D.Keck; Brittonia 8: 249 (1957)
= Penstemon tolmiei Hook.; Fl. Bor. Amer. 2: 98 (1803)
species :
Penstemon pruinosus
Douglas; Bot. Reg. t. 1280 (1829)
Name: Chelan beardtongue
Distribution: Canada (British Columbia); USA (Washington State)
71 CDN 73 USA
Remarks: subgen. Penstemon, sect. Penstemon
species :
Penstemon pseudoparvus
Crosswh.; Amer. Midl. Naturalist 74: 431 (1965)
Name: Mt. Washington beardtongue
Distribution: USA (New Mexico)
77 USA
species :
Penstemon pseudoputus
(Crosswh.) N.H.Holmgren; Brittonia 31(1): 106 (1979)
Name: Kaibab Plateau beardtongue
Distribution: USA (Arizona, Utah)
76 USA
Remarks: subgen. Penstemon, sect. Glabri
Synonyms: hidden
= Penstemon virgatus subsp. pseudoputus Crosswh.; Amer. Midl. Naturalist 77: 35, fig (1967)
species :
Penstemon pseudospectabilis
M.E.Jones; Contrib. Western Bot. 12: 66 (1908)
Name: Desert beardtongue
Distribution: USA (Arizona, California, Utah); Mexico (Sonora)
76 USA 79 MEX
Remarks: subgen. Penstemon, sect. Spectabiles
variant :
var. connatifolius
(A.Nelson) C.C.Freeman; PhytoKeys 80: 37 (2017)
Distribution: USA (Arizona, New Mexico)
76 USA 77 USA
Synonyms: hidden
= Penstemon connatifolius A.Nelson; Am. J. Bot. 18: 437 (1931)
= Penstemon pseudospectabilis subsp. connatifolius (A.Nelson) D.D.Keck; Amer. Midl. Naturalist 18: 807 (1937)
species :
Penstemon pudicus
Reveal & Beatley; Bull. Torr. Bot. Club. 98(6): 332 (1971 publ. 1972)
Name: Kawich Range beardtongue
Distribution: USA (S-Nevada)
76 USA
Remarks: subgen. Penstemon, sect. Saccanthera
species :
Penstemon pumilus
Nutt.; J. Acad. Philad. 7: 46 (1834)
Name: Salmon River beardtongue
Distribution: USA (Idaho)
73 USA
Remarks: subgen. Penstemon, sect. Cristati
Synonyms: hidden
= Penstemon incanus (A.Gray) Tidestr.; Contr. U.S. Natl. Herb. 25: 495 (1925)
= Penstemon pumilus var. incanus A.Gray; Syn. Fl. N. Amer. 2(1): 269 (1878)
species :
Penstemon punctatus
Brandegee; Univ. Calif. Publ. Bot. 4: 189 (1911)
Distribution: Mexico (Coahuila)
79 MEX
species :
Penstemon purpusii
Brandegee; Coult. Bot. Gaz. 27: 455 (1899)
Name: Snow Mountain beardtongue
Distribution: USA (California)
76 USA
Remarks: subgen. Penstemon, sect. Saccanthera
species :
Penstemon putus
A.Nelson; Univ. Wyoming Publ. Bot. 1: 131 (1926)
Name: Black River beardtongue
Distribution: USA (Arizona)
76 USA
Remarks: subgen. Penstemon, sect. Glabri
Synonyms: hidden
= Penstemon virgatus subsp. putus (A.Nelson) Crosswh.; Amer. Midl. Naturalist 77: 34 (1967)
species :
Penstemon radicosus
A.Nelson; Bull. Torrey Bot. Club 280 (1898)
Name: Matroot beardtongue
Distribution: USA (Colorado, Idaho, Montana, Nevada, Utah, Wyoming)
73 USA 76 USA
Remarks: subgen. Penstemon, sect. Penstemon
Synonyms: hidden
= Penstemon lineolatus Greene; Leafl. Bot. Observ. Crit. 1: 164 (1906)
species :
Penstemon rattanii
A.Gray; Proc. Amer. Acad. Arts 15: 50 (1880)
Name: Rattan´s beardtongue
Distribution: USA (California, Oregon)
73 USA 76 USA
Remarks: subgen. Penstemon, sect. Penstemon
variant :
var. kleei
(Green) A.Gray; Syn. Fl. N. Amer., ed. 2. 2(1): 441 (1886)
Name: Santa Cruz Mountains beardtongue
Distribution: USA (California)
76 USA
Synonyms: hidden
= Penstemon kleei Greene; Bull. Torr. Bot. Club 10: 127 (1883)
= Penstemon rattanii subsp. kleei (Greene) D.D.Keck; Publ. Carnegie Inst. Wash. 520: 295 (1940)
species :
Penstemon reidmoranii
Zacarías & A.Wolfe; Phytotaxa 387(1): 67 (2019)
Distribution: Mexico (Baja California)
79 MEX
species :
Penstemon retrorsus
Payson; Contr. U. S. Natl. Herb. 20: 373 (1920)
Name: Adobe beardtongue
Distribution: USA (Colorado: Delta Co., Montrose Co.)
73 USA
Remarks: subgen. Penstemon, sect. Caespitosi
species :
Penstemon rhizomatosus
N.H.Holmgren; Brittonia 50(2): 162 (1998)
Name: Scheel Creek beardtongue
Distribution: USA (Nevada: White Pine Co.)
76 USA
Remarks: subgen. Penstemon, sect. Saccanthera
species :
Penstemon richardsonii
Douglas; Lindl. Bot. Reg. t. 1121 (1828)
Name: Richardson´s beardtongue
Distribution: Canada (British Columbia); USA (Oregon, Washington State)
71 CDN 73 USA
Remarks: subgen. Penstemon, sect. Saccanthera
Synonyms: hidden
= Penstemon pickettii H.St.John; Proc. Biol. Soc. Washington 44: 33 (1931)
= Penstemon rivularis Douglas ex Trautv.; Bull. Sci. Acad. Imp. Sci. Saint-Pétersbourg 5: 346 (1839)
variant :
var. dentatus
(D.D.Keck) Cronquist; Vasc. Pl. Pacif. N. W. [C. L. Hitchcock & al.] 4: 401 (1959)
Distribution: USA (Oregon)
73 USA
Synonyms: hidden
= Penstemon richardsonii subsp. dentatus D.D.Keck; Brittonia 8: 250 (1957)
species :
Penstemon roezlii
Regel; Gartenfl. 239 (1872)
Name: Roezl´s beardtongue
Distribution: USA (California, Nevada, Oregon)
73 USA 76 USA
Remarks: subgen. Penstemon, sect. Saccanthera
Synonyms: hidden
= Penstemon cinerascens Greene; Leafl. Bot. Observ. Crit. 1: 161 (1906)
= Penstemon laetus subsp. roezlii (Regel) D.D.Keck; Univ. Calif. Publ. Bot. 16: 390 (fig. 10) (1932)
= Penstemon laetus var. roezlii (Regel) Jeps.; Man. Fl. Pl. Calif. [Jeps.] 916 (1925)
= Penstemon roezlii var. violaceus Brandegee; Bot. Gaz. 27: 456 (1899)
= Penstemon violaceus (Brandegee) A.Nelson; Proc. Biol. Soc. Washington 17: 96 (1904)
species :
Penstemon roseus
(Cerv. ex Sweet) G.Don; Loudon Hort. Brit. 243 (1830)
Distribution: Mexico (Aguascalientes, Chihuahua, Colima, Ciudad de Mexico, Durango, Guanajuato, Guerrero, Hidalgo, Jalisco, Mexico State, Michoacan, Morelos, Nayarit, Nuevo Leon, Oaxaca, Puebla, Queretaro, San Luis Potosi, Sinaloa, Sonora, Tlaxcala, Veracruz, Zacatecas)
79 MEX
Synonyms: hidden
= Chelone rosea Cerv. ex Sweet; Brit. Fl. Gard. 3: t. 230 (1828)
= Penstemon campanulatus f. roseus (G.Don) Voss; Vilm. Blumengärtn. ed. 3. 1: 768 (1894)
= Penstemon kunthii G.Don; Loudon Hort. Brit. 243 (1830)
species :
Penstemon rostriflorus
Kellogg; Proc. Calif. Acad. Sci. 2: 15 (1863)
Name: Bridges beardtongue
Distribution: USA (Arizona, California, Colorado, New Mexico, Nevada, Utah); Mexico (Baja California Norte)
73 USA 76 USA 77 USA 79 MEX
Remarks: subgen. Penstemon, sect. Bridgesiani
Synonyms: hidden
= Penstemon bridgesii A.Gray; Proc. Amer. Acad. Arts 7: 379 (1868)
= Penstemon bridgesii var. amplexicaulis Monnet; Bull. Soc. Bot. France 61: 228 (1915)
= Penstemon bridgesii var. rostriflorus (Kellogg) Schelle; Beissner et al., Handb. Laubholzben.: 432 (1903), nom. superfl.
species :
Penstemon rotundifolius
A.Gray; Proc. Amer. Acad. Arts 22: 307 (1887)
Distribution: Mexico (Chihuahua)
79 MEX
species :
Penstemon rubicundus
D.D.Keck; Am. Midl. Naturalist 18: 792, in clavi, 802 (1937)
Name: Wassuk Range beardtongue
Distribution: USA (Nevada)
76 USA
Remarks: subgen. Penstemon, sect. Spectabiles
species :
Penstemon rupicola
(Piper) Howell; Fl. N. W. Amer. 1: 510 (1901)
Name: Cliff beardtongue
Distribution: USA (California, Oregon, Washington State)
73 USA 76 USA
Remarks: subgen. Dasanthera, sect. Erianthera
Synonyms: hidden
= Penstemon newberryi var. rupicola Piper; Bull. Torrey Bot. Club 27: 397 (1900)
species :
Penstemon rydbergii
A.Nelson; Bull. Torrey Bot. Club 281 (1898)
Name: Rydberg´s beardtongue
Distribution: USA (Arizona, Colorado, Idaho, Montana, New Mexico, Nevada, Oregon, Utah, Washington State, Wyoming)
73 USA 76 USA 77 USA
Remarks: subgen. Penstemon, sect. Penstemon
Synonyms: hidden
= Penstemon attenuatus var. varians A.Nelson; Bot. Gaz. 54: 146 (1912)
= Penstemon erosus Rydb.; Bull. Torrey Bot. Club 28: 28 (1901)
= Penstemon lacerellus Greene; Leafl. Bot. Observ. Crit. 1: 161 (1906)
= Penstemon latiusculus Greene; Leafl. Bot. Observ. Crit. 1: 161 (1906)
= Penstemon productus Greene; Leafl. Bot. Observ. Crit. 1: 166 (1906)
= Penstemon rydbergii var. varians (A.Nelson) Cronquist; Vasc. Pl. Pacif. N.W. 4: 402 (1959)
variant :
var. aggregatus
(Pennell) K.Holmgren; Brittonia 31(1): 106 (1979)
Name: Meadow beardtongue
Distribution: USA (Arizona, Colorado, Idaho, Montana, Utah, Wyoming)
73 USA 76 USA
Synonyms: hidden
= Penstemon aggregatus Pennell; Contrib. US. Nat. Herb. 20: 367 (1920)
= Penstemon rydbergii subsp. aggregatus (Pennell) D.D.Keck; Amer. Midl. Naturalist 33: 158 (1945)
variant :
var. oreocharis
(Greene) N.H.Holmgren; Cronquist et al., Intermountain Fl., Vasc. Pl. Intermountain West, U. S. A. 4: 390 (1984)
Name: Herbaceous beardtongue
Distribution: USA (California, Idaho, Nevada, Oregon, Washington State)
73 USA 76 USA
Synonyms: hidden
= Penstemon ellipticus Greene; Leafl. Bot. Observ. Crit. 1: 167 (1906), nom. illeg.
= Penstemon oreocharis Greene; Leafl. Bot. Observ. Crit. 1: 163 (1906)
= Penstemon recurvatus A.Heller; Muhlenbergia 2: 247 (1906)
= Penstemon vaseyanus Greene; Leafl. Bot. Obs. Crit. 1: 200 (1906)
species :
Penstemon salmonensis
N.H.Holmgren; Brittonia 70(1): 129, figs. 7f-j, 8 (2017)
Distribution: USA (Idaho)
73 USA
species :
Penstemon saltarius
Crosswh.; Amer. Midl. Naturalist 84: 243 (1970)
Distribution: Mexico (Durango)
79 MEX
species :
Penstemon saxosorum
Pennell; Contr. U. S. Natl. Herb. 20: 349 (1920)
Name: Upland beardtongue
Distribution: USA (Colorado, Wyoming)
73 USA
Remarks: subgen. Penstemon, sect. Glabri
species :
Penstemon scapoides
D.D.Keck; Univ. Calif. Publ. Bot. 16: 379 (1932)
Name: Pinyon beardtongue
Distribution: USA (E-California, W-Nevada)
76 USA
Remarks: subgen. Penstemon, sect. Saccanthera
species :
Penstemon scariosus
Pennell; Contr. U. S. Natl. Herb. 20: 353 (1920)
Name: White River beardtongue
Distribution: USA (Utah)
76 USA
Remarks: subgen. Penstemon, sect. Glabri
variant :
var. albifluvis
(England) N.H.Holmgren; Cronquist et al., Intermountain Fl., Vasc. Pl. Intermountain West, U. S. A. 4: 442 (1984)
Distribution: USA (Colorado, Utah)
73 USA 76 USA
Synonyms: hidden
= Penstemon albifluvis England; Great Basin Nat. 42(3): 367 (1982)
variant :
var. cyanomontanus
Neese; Great Basin Nat. 46(3): 460 (1986)
Name: Neese´s Blue Mountain beardtongue
Distribution: USA (Colorado, Utah)
73 USA 76 USA
variant :
var. garrettii
(Pennell) N.H.Holmgren; Cronquist et al., Intermountain Fl., Vasc. Pl. Intermountain West, U. S. A. 4: 442 (1984)
Name: Garrett´s beardtongue
Distribution: USA (Utah, Wyoming)
73 USA 76 USA
Synonyms: hidden
= Penstemon garrettii Pennell; Contrib. US. Nat. Herb. 20: 353 (1920)
variant :
var. jolynniae
M.R.Stevens & R.L.Johnson; Monogr. W. N. Amer. Naturalist 14: 57 (2022)
Distribution: USA (Utah)
76 USA
species :
Penstemon schaffneri
(Hemsl.) Straw; Brittonia 15: 56 (1963)
Distribution: Mexico (Aguascalientes, Guanajuato, Jalisco, San Luis Potosi, Zacatecas)
79 MEX
Synonyms: hidden
= Penstemon baccharifolius var. schaffneri Hemsl.; Biol. Centr. Amer. (Bot. 2: 443 (1882)
species :
Penstemon secundiflorus
Benth.; Prodr. [A. DC.] 10: 325 (1846)
Name: Sidebells beardtongue
Distribution: USA (Colorado, New Mexico, Wyoming); Mexico (Chihuahua, Sonora)
73 USA 77 USA 79 MEX
Remarks: subgen. Penstemon, sect. Coerulei
Synonyms: hidden
= Penstemon secundiflorus subsp. lavendulus Pennell; Contr. U.S. Natl. Herb. 20: 358 (1920)
= Penstemon secundiflorus var. caudatus A.Nelson; Coult. & Nelson, Man. Bot. Rocky Mt., ed. 2: 444 (1909)
variant :
var. versicolor
(Pennell) C.C.Freeman; PhytoKeys 80: 37 (2017)
Name: Variable-color beardtongue
Distribution: USA (Colorado)
73 USA
Synonyms: hidden
= Penstemon versicolor Pennell; Contr. U. S. Natl. Herb. 20: 358 (1920)
species :
Penstemon seorsus
(A.Nelson) D.D.Keck; Am. Midl. Naturalist 23: 595 (1937 publ. 1940)
Name: Shortlobe beardtongue
Distribution: USA (Idaho, Oregon)
73 USA
Remarks: subgen. Penstemon, sect. Penstemon
Synonyms: hidden
= Penstemon linarioides var. seorsus A.Nelson; Bot. Gaz. 54: 147 (1912)
species :
Penstemon sepalulus
A.Nelson; New Man. Bot. Centr. Rocky Mts. 449 (1909)
Name: Little-cup beardtongue
Distribution: USA (Utah)
76 USA
Remarks: subgen. Penstemon, sect. Saccanthera
Synonyms: hidden
= Penstemon azureus var. ambiguus A.Gray; Syn. Fl. N. Amer. 2(1): 272 (1878), non P. ambiguus Torrey 1827
= Penstemon heterophyllus S.Watson; Botany [Fortieth Parallel]: 222 (1871), nom. illeg.
species :
Penstemon serrulatus
Menzies; Hook. Fl. Bor. Amer. 2: 95 (1814), ex Sm.
Name: Serrulate beardtongue
Distribution: Alaska; Canada (British Columbia); USA (Oregon, Washington State)
70 ASK 71 CDN 73 USA
Remarks: subgen. Penstemon, sect. Saccanthera
Synonyms: hidden
= Penstemon argutus Paxton; Paxton´s Mag. Bot. 6: 271 (1839)
= Penstemon diffusus Douglas; Bot. Reg. 14: t. 1132 (1828)
= Penstemon diffusus f. albiflorus Hardin; Mazama 11: 89 (1929)
= Penstemon themisteri E.Vilm.; Fl. Pleine Terre, ed. 2: 657 (1866)
species :
Penstemon smallii
A.Heller; Bull. Torr. Bot. Club 21: 25 et 304 (1894)
Name: Small´s beardtongue
Distribution: USA (Alabama, Georgia, North Carolina, South Carolina, Tennessee)
78 USA
Remarks: subgen. Penstemon, sect. Penstemon
species :
Penstemon spatulatus
Pennell; Not. Nat. Acad. Nat. Sci. Philad., No. 71, 10 (1941)
Name: Wallowa beardtongue
Distribution: USA (NE-Oregon)
73 USA
Remarks: subgen. Penstemon, sect. Penstemon
species :
Penstemon speciosus
Douglas; Bot. Reg. t. 1270 (1829) ex Lindl.
Name: Royal beardtongue
Distribution: USA (California, Idaho, Nevada, Oregon, Utah, Washington State)
73 USA 76 USA
Remarks: subgen. Penstemon, sect. Glabri
Synonyms: hidden
= Penstemon deserticola Piper; Proc. Biol. Soc. Washington 32: 43 (1919)
= Penstemon glaber f. speciosus (Douglas) Voss; Vilm. Blumengärtn. ed. 3. 1: 766 (1894)
= Penstemon glaber var. speciosus (Douglas) Regel; Gartenflora 24: 34 (1875)
= Penstemon kennedyi A.Nelson; Proc. Biol. Soc. Washington 17: 97 (1904)
= Penstemon pilifer A.Heller; Muhlenbergia 2: 136 (1906)
= Penstemon rex A.Nelson & J.F.Macbr.; Bot. Gaz. 55: 381 (1913)
= Penstemon speciosus subsp. kennedyi (A.Nelson) D.D.Keck; Amer. Midl. Naturalist 23: 613 (1940)
= Penstemon speciosus var. pilifer (A.Heller) Munz & I.M.Johnst.; Bull. S. Calif. Acad. Sci. 23: 35 (1924)
species :
Penstemon spectabilis
Thurb. ex Torr. & A.Gray; Pacif. Rail. Rep. 4: 119 (1857)
Name: Showy beardtongue
Distribution: USA (California); Mexico (Baja California Norte)
76 USA 79 MEX
Remarks: subgen. Penstemon, sect. Spectabiles
Synonyms: hidden
= Penstemon spectabilis var. gilmanii Jeps.; Man. Fl. Pl. Calif.: 912 (1925)
variant :
var. subinteger
(D.D.Keck) C.C.Freeman; PhytoKeys 80: 37 (2017)
Distribution: Mexico (Baja California Sur, Baja California Norte)
79 MEX
Synonyms: hidden
= Penstemon spectabilis subsp. subinteger D.D.Keck; Amer. Midl. Naturalist 18: 817 (1937)
variant :
var. subviscosus
(D.D.Keck) McMinn; Man. Calif. Shrubs 513 (1939)
Distribution: USA (California)
76 USA
Synonyms: hidden
= Penstemon spectabilis subsp. subviscosus D.D.Keck; Amer. Midl. Naturalist 18: 818 (1937)
species :
Penstemon stenophyllus
A.Gray; Torr. Bot. Mex. Bound. 112 (1858 publ. 1859)
Name: Sonoran beardtongue
Distribution: USA (Arizona); Mexico (Chihuahua, Durango, Jalisco, Sonora, Zacatecas)
76 USA 79 MEX
Remarks: subgen. Penstemon, sect. Chamaeleon
Synonyms: hidden
= Penstemon rubescens A.Gray; Proc. Amer. Acad. Arts 19: 92 (1883)
species :
Penstemon stephensii
Brandegee; Zoe 5: 151 (1903)
Name: Stephens´ beardtongue
Distribution: USA (S-California)
76 USA
Remarks: subgen. Penstemon, sect. Spectabiles
Synonyms: hidden
= Penstemon clevelandii var. stephensii (Brandegee) Munz & I.M.Johnst.; Bull. Torrey Bot. Club 49: 41 (1922)
species :
Penstemon strictiformis
Rydb.; Bull. Torrey Bot. Club 642 (1904)
Name: Mancos beardtongue
Distribution: USA (Arizona, Colorado, New Mexico, Utah)
73 USA 76 USA 77 USA
Remarks: subgen. Penstemon, sect. Glabri
Synonyms: hidden
= Penstemon strictus subsp. strictiformis (Rydb.) D.D.Keck in Kearney & Peebles; J. Wash. Acad. Sci. 29: 491 (1939)
species :
Penstemon strictus
Benth.; Prodr. [A. DC.] 10: 324 (1846)
Name: Rocky Mountain beardtongue
Distribution: USA (Arizona, California, Colorado, New Mexico, Utah, Wyoming)
73 USA 76 USA 77 USA
Remarks: subgen. Penstemon, sect. Glabri
Synonyms: hidden
= Penstemon micranthus Torr.; Frémont, Rep. Exped. Rocky Mts.: 89 (1845), nom. illeg.
= Penstemon strictus subsp. angustus Pennell; Contr. U. S. Natl. Herb. 20: 356 (1920)
species :
Penstemon subglaber
Rydb.; Bull. Torr. Bot. Club 36: 688 (1909)
Name: Smooth beardtongue
Distribution: USA (California, Idaho, Utah, Wyoming)
73 USA 76 USA
Remarks: subgen. Penstemon, sect. Glabri
Synonyms: hidden
= Penstemon glaber var. utahensis S.Watson; Botany [Fortieth Parallel]: 217 (1871)
= Penstemon utahensis (S.Watson) A.Nelson; Bull. Torrey Bot. Club 26: 242 (1899), nom. illeg.
species :
Penstemon subserratus
Pennell; Not. Nat. Acad. Nat. Sci. Philad., No. 71, 13 (1941)
Name: Finetooth beardtongue
Distribution: USA (Oregon, Washington State)
73 USA
Remarks: subgen. Penstemon, sect. Penstemon
species :
Penstemon subulatus
M.E.Jones; Contrib. Western Bot. 12: 63 (1908)
Name: Hackberry beardtongue
Distribution: USA (Arizona)
76 USA
Remarks: subgen. Penstemon, sect. Gentianoides
species :
Penstemon sudans
M.E.Jones; Contrib. Western Bot. 8: 37 (1898)
Name: Susanville beardtongue
Distribution: USA (California, Nevada)
76 USA
Remarks: subgen. Penstemon, sect. Penstemon
Synonyms: hidden
= Penstemon deustus subsp. sudans (M.E.Jones) Pennell & D.D.Keck; Amer. Midl. Naturalist 23: 600 (1940)
species :
Penstemon superbus
A.Nelson; Proc. Biol. Soc. Washington 17: 100 (1904)
Name: Superb beardtongue
Distribution: USA (Arizona, New Mexico); Mexico (Sonora)
76 USA 77 USA 79 MEX
Remarks: subgen. Penstemon, sect. Gentianoides
Synonyms: hidden
= Penstemon puniceus A.Gray; Emory, Rep. U.S. Mex. Bound. 2(1): 113 (1859), nom. illeg.
= Penstemon puniceus var. parryi A.Gray; Emory, Rep. U.S. Mex. Bound. 2(1): 113 (1859)
species :
Penstemon tenuiflorus
Pennell; Addsonia 4: 79 (1919)
Name: Eastern white-flower beardtongue
Distribution: USA (Alabama, Kentucky, Mississippi, Tennessee)
78 USA
Remarks: subgen. Penstemon, sect. Penstemon
species :
Penstemon tenuifolius
Benth.; Pl. Hartw. 22 (1846)
Distribution: Mexico (Aguascalientes, Coahuila, Durango, Jalisco, Queretaro, San Luis Potosi, Zacatecas)
79 MEX
species :
Penstemon tenuis
Small; Fl. S. E. U. S. 1061 (1903)
Name: Sharpsepal beardtongue
Distribution: USA (Arkansas, Louisiana, Mississippi, Texas)
77 USA 78 USA
Remarks: subgen. Penstemon, sect. Penstemon
species :
Penstemon tepicensis
Straw; Brittonia 15: 63 (1963)
Distribution: Mexico (Durango, Nayarit)
79 MEX
species :
Penstemon teucrioides
Greene; Pl. Baker 3: 23 (1901)
Name: Germander beardtongue
Distribution: USA (Colorado)
73 USA
Remarks: subgen. Penstemon, sect. Caespitosi
species :
Penstemon thompsoniae
(A.Gray) Rydb.; Bull. Torr. Bot. Club 36: 690 (1909)
Name: Thompson´s beardtongue
Distribution: USA (Arizona, California, Nevada, Utah)
76 USA
Remarks: subgen. Penstemon, sect. Caespitosi
Synonyms: hidden
= Penstemon caespitosus var. thompsoniae (A.Gray) A.Nelson; Publ. Univ. Wyoming 3: 104 (1937)
= Penstemon pumilus var. thompsoniae A.Gray; Syn. Fl. N. Amer. 2(1): 269 (1878)
= Penstemon thompsoniae subsp. jaegeri D.D.Keck; Bull. Torr. Bot. Club 64: 362 (1937)
= Penstemon thompsoniae var. desperatus Neese; Great Basin Nat. 46(3): 460 (1986)
= Penstemon thompsoniae var. jaegeri (D.D.Keck) Tiehm; J. Bot. Res. Inst. Texas 17(1): 26 (2023)
species :
Penstemon thurberi
Torr.; Pacif. Rail. Rep. 7: 15 (1856)
Name: Thurber´s beardtongue
Distribution: USA (Arizona, California, New Mexico, Nevada, Texas); Mexico (Baja California Norte, Coahuila)
76 USA 77 USA 79 MEX
Remarks: subgen. Penstemon, sect. Ambigui
Synonyms: hidden
= Leiostemon thurberi (Torr.) Greene; Leafl. Bot. Obs. Crit. 1: 223 (1906)
= Penstemon ambiguus var. thurberi (Torr.) A.Gray; Proc. Amer. Acad. Arts 6: 65 (1862)
= Penstemon scoparius A.Nelson; Publ. Sci. Univ. Wyoming, Bot. 1: 132 (1926)
= Penstemon thurberi var. anestius Reveal & Beatley; Great Basin Naturalist 34: 230 (1974)
species :
Penstemon tidestromii
Pennell; Contrib. US. Nat. Herb. 20: 379 (1920)
Name: Tidestrom´s beardtongue
Distribution: USA (Utah)
76 USA
Remarks: subgen. Penstemon, sect. Glabri
Synonyms: hidden
= Penstemon leptanthus Pennell; Contrib. US. Nat. Herb. 20: 339 (1920)
species :
Penstemon tiehmii
N.H.Holmgren; Brittonia 50(2): 159 (1998)
Name: Tiehm´s beardtongue
Distribution: USA (Nevada)
76 USA
Remarks: subgen. Penstemon, sect. Saccanthera
species :
Penstemon tracyi
D.D.Keck; Am. Midl. Naturalist 23: 603 (1940)
Name: Trinity beardtongue
Distribution: USA (California: Siskiyou Co., Trinity Co.)
76 USA
Remarks: subgen. Penstemon, sect. Penstemon
species :
Penstemon triflorus
A.Heller; Contrib. Herb. Frankl. Bot. Exp. S. Texas 1: 92 t. 8 (1895)
subspecies :
subsp. triflorus
Name: Heller´s beardtongue
Distribution: USA (Texas)
77 USA
Remarks: subgen. Penstemon, sect. Cristati
Synonyms: hidden
= Penstemon helleri Small; Bull. Torrey Bot. Club 471 (1898)
subspecies :
subsp. integrifolius
Pennell; Acad. Nat. Sci. Philadelphia Monogr. 1: 251 (1935)
Name: Heller´s beardtongue
Distribution: USA (Texas); Mexico (Coahuila)
77 USA 79 MEX
Synonyms: hidden
= Penstemon triflorus var. integrifolius (Pennell) Cory; Rhodora 38: 407 (1936)
species :
Penstemon triphyllus
Douglas; Bot. Reg. t. 1245 (1829)
Name: Whorled beardtongue
Distribution: USA (Idaho, Oregon, Washington State)
73 USA
Remarks: subgen. Penstemon, sect. Saccanthera
variant :
var. infernalis
N.H.Holmgren; Brittonia 70(1): 125, figs. 5-6 (2017)
Distribution: USA (Oregon)
73 USA
species :
Penstemon tubaeflorus
Nutt.; Trans. Am. Phil. Soc. N. S. 5: 181 (1837)
Name: Tube beardtongue
Distribution: USA (Arkansas, Connecticut, Iowa, Illinois, Indiana, Kansas, Kentucky, Louisiana, Massachusetts, Maine, Missouri, Mississippi, Nebraska, New Hampshire, Ohio, Oklahoma, Tennessee, Texas, Vermont, Wisconsin)
74 USA 75 USA 77 USA 78 USA
Remarks: subgen. Penstemon, sect. Penstemon
variant :
var. achoreus
Fernald; Rhodora 51: 83 (1949)
Distribution: USA (Connecticut, Massachusetts, Maine, New York, Pennsylvania, Rhode Island, Vermont)
75 USA
species :
Penstemon uintahensis
Pennell; Contrib. US. Nat. Herb. 20: 350 (1920)
Name: Uinta Mountain beardtongue
Distribution: USA (Utah)
76 USA
Remarks: subgen. Penstemon, sect. Glabri
species :
Penstemon unilateralis
Rydb.; Bull. Torr. Bot. Club 33: 150 (1906)
Name: Oneside beardtongue
Distribution: USA (Colorado, New Mexico, Wyoming)
73 USA 77 USA
Synonyms: hidden
= Penstemon eastwoodiae A.Heller; Muhlenbergia 1: 4 (1900)
species :
Penstemon utahensis
Eastw.; Zoe 4: 124 (1893)
Name: Utah beardtongue
Distribution: USA (Arizona, California, Colorado, Nevada, Utah)
73 USA 76 USA
Remarks: subgen. Penstemon, sect. Gentianoides
species :
Penstemon venustus
Douglas; Bot. Reg. t. 1309 (1830)
Name: Lovely beardtongue
Distribution: USA (California, Idaho, Oregon, Utah, Washington State)
73 USA 76 USA
Remarks: subgen. Penstemon, sect. Saccanthera
Synonyms: hidden
= Penstemon amoenus Kunze; Index Seminum (LZ, Lipsiensis) 1840: ? (1840)
= Penstemon suffruticosus Douglas ex Benth.; Prodr. [A. DC.] 10: 330 (1846)
species :
Penstemon virens
Pennell ex Rydb.; Fl. Rocky Mts. 773 (1917)
Name: Front Range beardtongue
Distribution: USA (Colorado, Wyoming)
73 USA
Remarks: subgen. Penstemon, sect. Penstemon
species :
Penstemon virgatus
A.Gray; Torr. Bot. Mex. Bound. 112 (1858 publ. 1859)
Name: Upright blue beardtongue
Distribution: USA (Arizona, New Mexico); Mexico (Colima, Jalisco, San Luis Potosi)
76 USA 77 USA 79 MEX
Remarks: subgen. Penstemon, sect. Glabri
variant :
var. asa-grayi
(Crosswh.) Dorn; Vasc. Pl. Wyoming: 300 (1988)
Distribution: USA (Colorado, New Mexico, Wyoming)
73 USA 77 USA
Synonyms: hidden
= Penstemon virgatus subsp. asa-grayi Crosswh.; Southw. Naturalist 10: 318 (1965)
species :
Penstemon vizcainensis
Moran; Phytologia 45(6): 498 (1980)
Distribution: Mexico (Baja California Sur)
79 MEX
species :
Penstemon vulcanellus
Crosswh.; Amer. Midl. Naturalist 84: 240 (1970)
Distribution: Mexico (Durango)
79 MEX
species :
Penstemon wardii
A.Gray; Proc. Amer. Acad. Arts 12: 82 (1877)
Name: Ward´s beardtongue
Distribution: USA (Utah)
76 USA
Remarks: subgen. Penstemon, sect. Glabri
Synonyms: hidden
= Penstemon glaber var. wardii (A.Gray) M.E.Jones; Contr. W. Bot. 12: 62 (1908)
species :
Penstemon washingtonensis
D.D.Keck; Amer. Midl. Naturalist 33: 150 (1945)
Name: Washington beardtongue
Distribution: USA (Washington State)
73 USA
Remarks: subgen. Penstemon, sect. Penstemon
species :
Penstemon watsonii
A.Gray; Syn. Fl. N. Am. 2: I. 267 (1878)
Name: Watson´s beardtongue
Distribution: USA (Arizona, Colorado, Idaho, Nevada, Utah, Wyoming)
73 USA 76 USA
Remarks: subgen. Penstemon, sect. Penstemon
Synonyms: hidden
= Penstemon phlogifolius Greene; Leafl. Bot. Observ. Crit. 1: 164 (1906)
species :
Penstemon wendtiorum
B.L.Turner; Phytoneuron 2010-31: 2 (2010)
Distribution: Mexico (Coahuila)
79 MEX
Synonyms: hidden
= Paederota cochlearifolia J.Koenig ex Rottb.; Wall., Numer. List no. 3920 (1831), nom. inval.
species :
Penstemon whippleanus
A.Gray; Proc. Amer. Acad. Arts 6: 73 (1862)
Name: Whipple´s beardtongue
Distribution: USA (Arizona, Colorado, Idaho, Montana, New Mexico, Utah, Wyoming)
73 USA 76 USA 77 USA
Remarks: subgen. Penstemon, sect. Penstemon
Synonyms: hidden
= Penstemon arizonicus A.Heller; Bull. Torrey Bot. Club 26: 591 (1899)
= Penstemon glaucus var. stenosepalus A.Gray; Proc. Amer. Acad. Arts 6: 70 (1862)
= Penstemon pallescens Osterh.; Bull. Torrey Bot. Club 57: 559 (1930 publ. 1931)
= Penstemon stenosepalus (A.Gray) Howell; Fl. N.W. Amer.: 514 (1901)
species :
Penstemon wilcoxii
Rydb.; Bull. Torrey Bot. Club 28 (1901)
Name: Wilcox´s beardtongue
Distribution: USA (Idaho, Montana, Oregon, Washington State)
73 USA
Remarks: subgen. Penstemon, sect. Penstemon
Synonyms: hidden
= Penstemon ovatus var. pinetorum Piper; Contr. U. S. Natl. Herb. 11: 500 (1906)
= Penstemon pinetorum (Piper) Piper; Contr. U.S. Natl. Herb. 11: 500 (1906)
species :
Penstemon wislizeni
(A.Gray) Straw; Bol. Soc. Bot. Mexico, No. 24, 50 (1959)
Distribution: Mexico (Chihuahua, Durango, Nuevo Leon, San Luis Potosi, Sonora)
79 MEX
Synonyms: hidden
= Penstemon barbatus var. wislizeni A.Gray; Proc. Amer. Acad. Arts 6: 59 (1862)
species :
Penstemon wrightii
Hook.; Bot. Mag. 77: t. 4601 (1851)
Name: Wright´s beardtongue
Distribution: USA (W-Texas)
77 USA
Remarks: subgen. Penstemon, sect. Gentianoides
species :
Penstemon xylus
A.Nelson; Bot. Gaz. 34: 31 (1902)
Name: Tushar Range beardtongue
Distribution: USA (Utah)
76 USA
Remarks: subgen. Penstemon, sect. Caespitosi
Synonyms: hidden
= Penstemon caespitosus subsp. suffruticosus (A.Gray) D.D.Keck; Bull. Torrey Bot. Club 64: 365 (1937)
= Penstemon caespitosus var. suffruticosus A.Gray; Syn. Fl. N. Amer. 2(1): 270 (1878)
= Penstemon tusharensis N.H.Holmgren; Brittonia 31(1): 106 (1979), nom. nov. superfl.
species :
Penstemon yampaensis
Penland; Madroño 14: 156 (1958)
Name: Yampa beardtongue
Distribution: USA (Colorado, Utah)
73 USA 76 USA
Remarks: subgen. Penstemon, sect. Cristati
Synonyms: hidden
= Penstemon acaulis var. yampaensis (Penland) Neese; Great Basin Nat. 46(3): 459 (1986)
species :
Penstemon ×bryantiae
D.D.Keck; Amer. Midl. Naturalist 18: 820 (1937)
Name: Bryant´s beardtongue
Distribution: USA (California)
76 USA
species :
Penstemon ×crideri
A.Nelson; Am. J. Bot. 23: 270 (1936)
Distribution: USA (Arizona)
76 USA
Remarks: Penstemon eatonii ssp. exsertus x pseudospectabilis ssp. connatifolius
species :
Penstemon ×dubius
Davidson; Bull. S. Calif. Acad. Sci. 28: 6 (1929)
Distribution: USA
Remarks: P. centranthifolius x grinnellii
species :
Penstemon ×jonesii
Pennell; Contrib. US. Nat. Herb. 20: 338 (1920)
Distribution: USA (Utah)
76 USA
Remarks: Penstemon eatonii ssp. undosus x laevis
species :
Penstemon ×mirus
A.Nelson; Amer. J. Bot. 25: 116 (1938)
Distribution: USA (Arizona)
76 USA
Remarks: Penstemon eatonii ssp. exertus x palmeri
species :
Penstemon ×moronensis
Crosswh.; Sida 2: 266 (1966)
Distribution: Mexico
79 MEX
Remarks: P. hidalgensis x roseus
species :
Penstemon ×parishii
A.Gray; Proc. Amer. Acad. Arts 17: 228 (1882)
Distribution: USA (California)
76 USA
Remarks: Penstemon centranthifolius x spectabilis
species :
Penstemon ×peirsonii
Munz & I.M.Johnst.; Bull. Torrey Bot. Club 52: 225 (1925)
Distribution: USA
Remarks: P. grinnellii x speciosus