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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)
452.5262 Genus Malacothrix DC.; Prodr. [A.P. de Candolle] 7: 192 (1838)
Distribution: W-USA, Mexico
Species listed in database: 19
= Leptoseris Nutt.; Trans. Amer. Philos. Soc., n. s. 7: 438 (1840)
= Leucoseris Nutt.; Trans. Amer. Philos. Soc., n. s. 7: 439 (1840)
= Malacomeris Nutt.; Trans. Amer. Philos. Soc., n. s. 7: 435 (1840)
= Malacolepis A.Heller; Muhlenbergia 2: 147 (1906)
species :
Malacothrix californica DC.; Prodr. [A.P. de Candolle] 7: 192 (1838)
Name: California desertdandelion
Distribution: USA (California); Mexico (Baja California Norte, Baja California Sur, Sonora)
76 USA 79 MEX
variant :
var. glabrata A.Gray ex D.C.Eaton; Botany (Fortieth Parallel) 201 (1871)
Distribution: USA (Nevada)
76 USA
species :
Malacothrix clevelandii A.Gray; Bot. California [W.H.Brewer] 1: 433 (1876)
Name: Cleveland´s desertdandelion
Distribution: USA (California); Mexico (Baja California Sur, Baja California Norte, Sonora); Isla Guadalupe; Chile (Atacama, Coquimbo)
76 USA 79 GLP MEX 85 CLE
Synonyms: hidden
= Calais clevelandii (A.Gray) Greene; Bull. Calif. Acad. Sci. 2(6): 153 (1886)
= Calais parryi A.Gray; Pacif. Railr. Rep. 4 [Whipple]: 112 (1857)
= Crepis geisseana Phil.; Anales Univ. Chile 87: 328 (1894)
= Malacothrix senecioides Reiche; Anales Univ. Chile 117: 193 (1905), nom. nov.
= Microseris parryi (A.Gray) Sch.Bip.; Jahresber. Pollichia 22-24: 309 (1866)
= Uropappus clevelandii (A.Gray) Greene; Erythea 1: 137 (1893), et Man. Bot. San Francisco 221 (1894)
= Uropappus lindleyi var. clevelandii (Greene) Jeps.; Fl. W. Calif. [Jepson] 494 (1901)
species :
Malacothrix coulteri Harv. & A.Gray ex A.Gray; Mem. Amer. Acad. Arts, n. s. 4: 113 (1849)
Name: Snake´s head desertdandelion, snake´s head
Distribution: USA (Arizona, California, Nevada, Utah); Mexico (Baja California Norte); Argentina (Chubut, Neuquén, Rio Negro); Chile (Coquimbo)
76 USA 79 MEX 85 ARG CLE
Synonyms: hidden
= Malacolepis coulteri (Harv. & A.Gray) A.Heller; Muhlenbergia 2: 147 (1906)
= Malacothrix coulteri var. cognata Jeps.; Man. Fl. Pl. Calif. [Jepson] 1001 (1925)
= Zollikoferia elquiensis Phil.; Anales Univ. Chile 87: 327 (1894)
species :
Malacothrix fendleri A.Gray; Smithsonian Contr. Knowl. 5(6) [Pl. Wright. 2]: 104 (1853)
Name: Fendler´s desertdandelion
Distribution: USA (Arizona, New Mexico, Texas); Mexico (Chihuahua, Sonora)
76 USA 77 USA 79 MEX
species :
Malacothrix floccifera (DC.) S.F.Blake; Contr. U.S. Natl. Herb. 22: 656 (1924)
Name: Woolly desertdandelion
Distribution: USA (California, Nevada)
76 USA
Synonyms: hidden
= Malacothrix obtusa Benth.; Pl. Hartw. [Bentham] 321 (1849)
= Malacothrix parviflora Benth.; Pl. Hartw. [Bentham] 321 (1849)
= Senecio flocciferus DC.; Prodr. [A.P. de Candolle] 6: 426 (1838)
species :
Malacothrix foliosa A.Gray ex Lyon; Bot. Gaz. 11: (1886) 335. nomen, et Syn. N. Amer. Fl. 1(2): 454 (1886)
subspecies :
subsp. foliosa
Name: Leafy desertdandelion
Distribution: USA (California: San Clemente Isl.); Mexico (Baja California Norte)
76 USA 79 MEX
Synonyms: hidden
= Malacothrix insularis Greene; Bull. Calif. Acad. Sci. 1(4): 194 (1885)
subspecies :
subsp. crispifolia W.S.Davis; Madroño 44(3): 234 (1997 publ. 1998)
Name: Petite desertdandelion
Distribution: USA (California: Anacapa Isl.)
76 USA
subspecies :
subsp. philbrickii W.S.Davis; Madroño 44(3): 236 (1997 publ. 1998)
Name: Philbrick´s desertdandelion
Distribution: USA (California: Santa Barbara Isl.)
76 USA
subspecies :
subsp. polycephala W.S.Davis; Madroño 44(3): 237 (1997 publ. 1998)
Name: Many-head desertdandelion
Distribution: USA (California: San Nicolas Isl.)
76 USA
species :
Malacothrix glabrata (D.C.Eaton ex A.Gray) A.Gray; Syn. Fl. N. Amer. 1(2): 422 (1884)
Name: Smooth desertdandelion
Distribution: USA (Arizona, California, Idaho, Nevada, New Mexico, Oregon, Utah); Mexico (Baja California Norte, Baja California Sur, Sonora)
73 USA 76 USA 77 USA 79 MEX
Synonyms: hidden
= Malacothrix californica var. glabrata D.C.Eaton ex A.Gray; Botany (Fortieth Parallel) 201 (1871)
species :
Malacothrix incana (Nutt.) Torr. & A.Gray; Fl. N. Amer. [Torrey & A.Gray] 2: 486 (1843)
Name: Dunedelion, dune malacothrix
Distribution: USA (California)
76 USA
Synonyms: hidden
= Malacomeris incanus Nutt.; Trans. Amer. Philos. Soc., n. s. 7: 435 (1840)
= Malacothrix incana var. succulenta (Elmer) J.K.Williams; Amer. Midl. Naturalist 58(2): 506, 511 (1957)
= Malacothrix succulenta Elmer; Bot. Gaz. 39: 44 (1905)
species :
Malacothrix indecora Greene; Bull. Calif. Acad. Sci. 2(6): 152 (1886)
Name: Santa Cruz Isl. desertdandelion
Distribution: USA (California: San Miguel Isl., Santa Cruz Isl., Santa Rosa Isl.)
76 USA
Synonyms: hidden
= Malacothrix foliosa var. indecora (Greene) E.W.Williams; Amer. Midl. Naturalist 58: 507 (1957)
species :
Malacothrix junakii W.S.Davis; Madroño 44(3): 241 (1997 publ. 1998)
Name: Junak´s desertdandelion, Anacapa Isl. desertdandelion
Distribution: USA (California: Anacapa Isl.)
76 USA
species :
Malacothrix phaeocarpa W.S.Davis; Madroño 40(2): 101 (1993)
Name: Davis´s desertdandelion
Distribution: USA (California)
76 USA
species :
Malacothrix saxatilis (Nutt.) Torr. & A.Gray; Fl. N. Amer. [Torrey & A.Gray] 2: 486 (1843)
Name: Cliff desertdandelion
Distribution: USA (California: Santa Barbara Co.)
76 USA
Synonyms: hidden
= Hieracium californicum Froel.; Prodr. [A.P. de Candolle] 7(1): 235 (1838)
= Leucoseris californica (Froel.) Nutt.; Trans. Amer. Philos. Soc., n. s. 7: 440 (1840)
= Leucoseris saxatilis Nutt.; Trans. Amer. Philos. Soc., n. s. 7: 440 (1840)
= Malacothrix saxatilis var. tenuissima Munz; Man. S. Calif. Bot. [Munz] 591, 601 (1935)
= Sonchus californicus (Froel.) Hook. & Arn.; Bot. Beechey Voy. 361 (1839)
variant :
var. arachnoidea (E.A.McGregor) E.W.Williams; Amer. Midl. Naturalist 58: 509 (1957)
Name: Carmel Valley malacothrix
Distribution: USA (California: Monterey Co., Santa Barbara Co.)
76 USA
Synonyms: hidden
= Malacothrix arachnoidea McGregor; Bull. Torrey Bot. Club 36: 605 (1909)
variant :
var. commutata (Torr. & A.Gray) Ferris; Aliso 4: 100 (1958)
Distribution: USA (California: Ventura Co., Monterey Co., Kern Co.)
71 CDN 76 USA
Synonyms: hidden
= Malacothrix commutata Torr. & A.Gray; Fl. N. Amer. [Torrey & A.Gray] 2: 487 (1843)
variant :
var. implicata (Eastw.) H.M.Hall; Univ. Calif. Publ. Bot. 3: 269 (1907)
Distribution: USA (California: Anacapa Isl., San Nicolas Isl., San Miguel Isl., Santa Cruz Isl., Santa Rosa Isl.)
76 USA
Synonyms: hidden
= Malacothrix implicata Eastw.; Proc. Calif. Acad. Sci., Ser. 2, 1: 113 (1898)
variant :
var. tenuifolia (Nutt.) A.Gray; Syn. Fl. N. Amer. 1(2): 423 (1884)
Distribution: USA (California)
76 USA
Synonyms: hidden
= Leucoseris tenuifolia Nutt.; Trans. Amer. Philos. Soc., n. s. 7: 440 (1840)
= Malacothrix altissima Greene; Bull. Calif. Acad. Sci. 1(4): 195 (1885)
= Malacothrix saxatilis var. altissima (Greene) Ferris; Contr. Dudley Herb. 5: 102 (1958)
= Malacothrix tenuifolia (Nutt.) Torr. & A.Gray; Fl. N. Amer. [Torrey & A.Gray] 2: 487 (1843)
species :
Malacothrix similis W.S.Davis & P.H.Raven; Madroño 16: 262 (1962)
Distribution: +USA (+California); Mexico (Baja California Norte)
76 USA 79 MEX
species :
Malacothrix sonchoides (Nutt.) Torr. & A.Gray; Fl. N. Amer. [Torrey & A.Gray] 2: 486 (1843)
Name: Sow-thistle desertdandelion
Distribution: USA (Arizona, California, Colorado, Nevada, New Mexico, Utah, Wyoming)
73 USA 76 USA 77 USA
Synonyms: hidden
= Leptoseris sonchoides Nutt.; Trans. Amer. Philos. Soc., n. s. 7: 439 (1840)
= Malacothrix runcinata A.Nelson; Bull. Torrey Bot. Club 26: 485 (1899)
species :
Malacothrix sonorae W.S.Davis & P.H.Raven; Madroño 16: 264 (1962)
Name: Sonoran desertdandelion
Distribution: USA (Arizona, New Mexico); Mexico (Sonora)
76 USA 77 USA 79 MEX
species :
Malacothrix squalida Greene; Bull. Calif. Acad. Sci. 2(6): 152 (1886)
Name: Island or Santa Cruz desertdandelion
Distribution: USA (California: Middle Anacapa Isl., Santa Cruz Isl.)
76 USA
Synonyms: hidden
= Malacothrix foliosa var. squalida (Greene) E.W.Williams; Amer. Midl. Naturalist 58: 507 (1957)
= Malacothrix insularis var. squalida (Greene) Ferris; Contr. Dudley Herb. 5: 102 (1958)
species :
Malacothrix stebbinsii W.S.Davis & P.H.Raven; Madroño 16: 265 (1962)
Name: Stebbins´s desertdandelion
Distribution: USA (Arizona, California, Nevada, New Mexico); Mexico (Sonora)
76 USA 77 USA 79 MEX
Synonyms: hidden
= Malacothrix clevelandii var. stebbinsii (W.S.Davis & P.H.Raven) Cronquist; Intermount. Fl. [Cronquist et al.] 5: 436 (1994)
species :
Malacothrix torreyi A.Gray; Proc. Amer. Acad. Arts 9: 213 (1874)
Name: Torrey´s desertdandelion
Distribution: USA (Arizona, California, Colorado, Idaho, Montana, Nevada, Oregon, Utah, Wyoming)
73 USA 76 USA
Synonyms: hidden
= Malacothrix sonchoides var. torreyi (A.Gray) E.W.Williams; Amer. Midl. Naturalist 58: 503 (1957)
species :
Malacothrix xanti A.Gray; Proc. Amer. Acad. Arts 9: 213 (1874)
Distribution: Mexico (Baja California Sur)
79 MEX
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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