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452.0000 Family Asteraceae Dumort.; Commentat. Bot. [Dumortier] 55 (1822)
1620 genera, ca. 29.000 spp. (35.000 spp. incl. microspecies). Systematics taken mostly from Funk et al. (2009, 2020) and Zuntini et al. (2024). Barnadesioideae (so far treated as most basal member of Asteraceae) might be a separate family, more related to Calyceraceae.
Species listed in database: 35209; hybrids: 676
= Acarnaceae Link; (1829)
= Ambrosiaceae Bercht. & J.Presl; Prír. Rostlin 254 (1820), nom. cons.
= Anthemidaceae Bercht. & J.Presl; Prír. Rostlin 254 (1820)
= Aposeridaceae Raf.; New Fl. [Rafinesque] 4: 106 (1838)
= Arctotaceae Bessey; Univ. Stud. Nebraska 14: 107 (1914)
= Arctotidaceae Bercht. & J.Presl; Prír. Rostlin 255 (1820)
= Artemisiaceae Martinov; Tekhno-Bot. Slovar 48 (1820)
= Athanasiaceae Martinov; Tekhno-Bot. Slovar 56 (1820)
= Calendulaceae Bercht. & J.Presl; Prír. Rostlin 254 (1820)
= Carduaceae Bercht. & J.Presl; Prír. Rostlin 255 (1820)
= Carlinaceae Bercht. & J.Presl; Prír. Rostlin 255 (1820)
= Centaureaceae Bercht. & J.Presl; Prír. Rostlin 255 (1820)
= Cichoriaceae Juss.; Gen. Pl. [Jussieu] 168 (1789), nom. cons.
= Cnicaceae Vest; Anleit. Stud. Bot. 273, 297 (1818)
= Compositae Giseke; Prael. Ord. Nat. Pl. 538 (1792), nom. cons.
= Coreopsidaceae Link; Handbuch [Link] 1: 768 (1829)
= Cynaraceae Burnett; Outlines Bot. [Burnett] 926, 931, 1094, 1111 (1835)
= Echinopaceae Bercht. & J.Presl; Prír. Rostlin 255 (1820)
= Eupatoriaceae Bercht. & J.Presl; Prír. Rostlin 253 (1820)
= Gnaphaliaceae Link ex F.Rudolphi; Syst. Orb. Veg. 46 (1830)
= Grindeliaceae Rchb. ex A.Heller; Muhlenbergia 2: 330 (1907)
= Heleniaceae Raf.; Cincinnati Lit. Gaz. 2: 28 (1824)
= Helianthaceae Bercht. & J.Presl; Prír. Rostlin 254 (1820)
= Helichrysaceae Link; Handbuch [Link] 1: 712 (1829)
= Inulaceae Bercht. & J.Presl; Prír. Rostlin 254 (1820)
= Ivaceae Raf.; Fl. Tellur. 1: 31 (1837)
= Lactucaceae Drude; Handb. Bot. 3(2): 369 (1886)
= Lapsanaceae Martinov; (1820)
= Madiaceae A.Heller; Muhlenbergia 2: 332 (1907)
= Matricariaceae Voigt; Hort. Suburb. Calcutt. 400 (1845)
= Mutisiaceae Burnett; Outlines Bot. [Burnett] 934, 935, 1094, 1111 (1835)
= Nassauviaceae Burmeist.; Handb. Naturgesch. 290 (1836)
= Partheniaceae Link; Handbuch [Link] 1: 816 (1829)
= Perdiciaceae Link; Handbuch [Link] 1: 728 (1829)
= Picridaceae Martinov; Tekhno-Bot. Slovar 482 (1820)
= Santolinaceae Martinov; Tekhno-Bot. Slovar 560 (1820)
= Senecionaceae Bercht. & J.Presl; Prír. Rostlin 254 (1820)
= Serratulaceae Martinov; Tekhno-Bot. Slovar 577 (1820)
= Tanacetaceae Vest; Anleit. Stud. Bot. 273, 298 (1818)
= Tussilagaceae Bercht. & J.Presl; Prír. Rostlin 254 (1820)
= Vernoniaceae Burmeist.; Handb. Naturgesch. 296 (1836)
= Xanthiaceae Vest; Anleit. Stud. Bot. 273, 298 (1818)
= Xeranthemaceae Döll; Rhein. Fl. [Döll] 498 (1843)
452.7274 Genus Psilactis A.Gray; Mem. Amer. Acad. Arts, n. s. 4: (Pl. Fendl.) 71 (1849)
Distribution: SW-USA (5), NW-Mexico, Colombia, Peru
Species listed in database: 6
species :
Psilactis asteroides A.Gray; Mem. Amer. Acad. Arts, n. s. 4: 72 (1849)
Distribution: USA (Arizona, New Mexico, Texas); Mexico (Aguascalientes, Chihuahua, Coahuila, Ciudad de Mexico, Durango, Guanajuato, Hidalgo, Jalisco, México State, Michoacan, Nuevo Leon, Puebla, Queretaro, San Luis Potosi, Sinaloa, Sonora, Tamaulipas, Zacatecas)
76 USA 77 USA 79 MEX
Synonyms: hidden
= Aster boltoniae Greene; Pittonia 3: 248 (1897)
= Machaeranthera boltoniae (Greene) B.L.Turner & Horne; Brittonia 16: 328 (1964)
= Psilactis lepta Shinners; Field & Lab. 17: 53 (1949)
species :
Psilactis brevilingulata Sch.Bip. ex Hemsl.; Diagn. Pl. Nov. Mexic. 34 (1879)
Distribution: USA (Arizona, New Mexico, Texas); Mexico (Aguascalientes, Chiapas, Chihuahua, Coahuila, Ciudad de Mexico, Durango, Guanajuato, Guerrero, Hidalgo, Jalisco, México State, Michoacan, Morelos, Nayarit, Nuevo Leon, Oaxaca, Puebla, Queretaro, San Luis Potosi, Tamaulipas, Tlaxcala, Veracruz, Zacatecas); Colombia (Boyacá, Cundinamarca, Norte de Santander); Peru
76 USA 77 USA 79 MEX 82 CLM 83 PER
Synonyms: hidden
= Aster brevilingulatus (Sch.Bip. ex Hemsl.) McVaugh; Contr. Univ. Michigan Herb. 9(4): 362 (1972)
= Machaeranthera brevilingulata (Sch.Bip. ex Hemsl.) B.L.Turner & Horne; Brittonia 16: 324 (1964)
= Psilactis brevilingulata f. andina Cuatrec.; Proc. Biol. Soc. Washington 77: 140 (1964)
species :
Psilactis gentryi (Standl.) D.R.Morgan; Syst. Bot. 18(2): 302 (1993)
Distribution: USA (Arizona); Mexico (Chihuahua, Durango, Guanajuato, Hidalgo, México State, Queretaro, Sinaloa, Sonora)
76 USA 79 MEX
Synonyms: hidden
= Aster gentryi Standl.; Publ. Field Mus. Nat. Hist., Bot. Ser. 22: 60 (1940)
= Machaeranthera gentryi (Standl.) Jackson ex B.L.Turner; Phytologia 25(2): 57 (1972)
= Machaeranthera mexicana B.L.Turner & Horne; Brittonia 16: 329 (1964)
species :
Psilactis heterocarpa (R.L.Hartm. & M.A.Lane) D.R.Morgan; Syst. Bot. 18(2): 301 (1993)
Distribution: USA (Texas)
77 USA
Synonyms: hidden
= Machaeranthera heterocarpa R.L.Hartm. & M.A.Lane; Brittonia 39(2): 253 (1987)
species :
Psilactis odysseus (G.L.Nesom) D.R.Morgan; Syst. Bot. 18(2): 298 (1993)
Distribution: Mexico (Nuevo Leon, Tamaulipas)
79 MEX
Synonyms: hidden
= Machaeranthera odysseus G.L.Nesom; Syst. Bot. 3(2): 218 (1979)
species :
Psilactis tenuis S.Watson; Proc. Amer. Acad. Arts 26: 139 (1891)
Distribution: USA (Texas); Mexico (Chihuahua, Coahuila, Nuevo Leon, San Luis Potosi, Sonora, Tamaulipas, Zacatecas)
77 USA 79 MEX
Synonyms: hidden
= Machaeranthera tenuis (S.Watson) B.L.Turner & Horne; Brittonia 16: 326 (1964)
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A complete, synonymic checklist of the Higher Plants of the World

Version 25.04 (April 17th, 2025)

Covering 356,375 accepted species,
8,782 hybrids, 48,090 accepted infraspecific taxa and 1,002,897 synonyms,
in total 1,416,144* names

[*about 25,000 dubious, "unplaced" names and about 4,000 invalid names (Art. 24.3) like "typicus" are deliberately omitted]

With complete, detailed distribution data (countries and regions) and literature references

Arranged in linear phylogenetic sequence reflecting true relationships

Fully searchable and continously updated

With 38,209 pictures of 15,787 species

Assembled through 40 years independently from other databases

In cooperation with Catalogue of Life