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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)
452.8370 Genus Layia Hook. & Arn. ex DC.; Prodr. [A.P. de Candolle] 7(1): 294 (1838)
Distribution: mostly California, 2 to Baja California Norte, 1 SW-USA widespread
Species listed in database: 15
= Calliachyris Torr. & A.Gray; Boston J. Nat. Hist. 5: 110 (1845)
= Callichroa Fisch. & C.A.Mey.; Index Sem. (St. Petersburg [Petropolitanus]) 2: 31 (1836)
= Calliglossa Hook. & Arn.; Bot. Beechey Voy. 356 (1839)
= Eriopappus Arn.; Intr. Nat. Syst. Bot., ed. 2: 443 (1836)
= Madaroglossa DC.; Prodr. [A.P. de Candolle] 5: 694 (1836)
= Oxyura DC. ex Lindl.; Edwards´s Bot. Reg. 22: t. 1850 (1836)
= Tollatia Endl.; Gen. Pl. [Endlicher] 428 (1838)
= Urostylis Meisn.; Pl. Vasc. Gen. [Meisner] 207 (1839)
species :
Layia carnosa (Nutt.) Torr. & A.Gray; Fl. N. Amer. [Torrey & A.Gray] 2: 394 (1843)
Distribution: USA (California)
76 USA
Synonyms: hidden
= Blepharipappus carnosus (Nutt.) Greene; Pittonia 2: 246 (1892)
= Madaroglossa carnosa Nutt.; Trans. Amer. Philos. Soc., n. s. 7: 393 (1840)
species :
Layia chrysanthemoides (DC.) A.Gray; Proc. Amer. Acad. Arts 7: 360 (1868)
Distribution: USA (California)
76 USA
Synonyms: hidden
= Blepharipappus chrysanthemoides (DC. ex Lindl.) Greene; Pittonia 2: 247 (1892)
= Blepharipappus douglasii (Hook. & Arn.) Greene; Pittonia 2: 247 (1892)
= Blepharipappus douglasii var. oligochaeta Greene; Man. Bot. San Francisco 201 (1894)
= Callichroa douglasii (Hook. & Arn.) Torr. & A.Gray; Fl. N. Amer. [Torrey & A.Gray] 2: 396 (1843)
= Calliglossa douglasii Hook. & Arn.; Bot. Beechey Voy. 356 (1839)
= Hartmannia ciliata DC.; Prodr. [A.P. de Candolle] 5: 694 (1836)
= Hemizonia ciliata (DC.) Torr. & A.Gray; Fl. N. Amer. [Torrey & A.Gray] 2: 398 (1842)
= Layia calliglossa A.Gray; Mem. Amer. Acad. Arts, n. s. 4(1): 103 (1849)
= Layia calliglossa var. oligochaeta A.Gray; Bot. California [W.H.Brewer] 1: 370 (1876)
= Layia chrysanthemoides subsp. maritima D.D.Keck; Aliso 4: 106 (1958)
= Oxyura chrysanthemoides DC.; Prodr. [A.P. de Candolle] 5: 693 (1836)
= Oxyura douglasii (Hook. & Arn.) E.Mey.; Index Sem. (Königsberg (Krzemieniec)) 1845: 5 (1845)
= Tollatia chrysanthemoides (DC.) Endl.; Cat. Horti Vindob. 1: 353 (1842) ex Walp., Rep. 2: 631 (1847)
species :
Layia discoidea D.D.Keck; Aliso 4: 106 (1958)
Distribution: USA (California)
76 USA
species :
Layia erubescens B.G.Baldwin; Madroño 69(1): 88 (2022)
Distribution: USA (California)
76 USA
species :
Layia fremontii (Torr. & A.Gray) A.Gray; Mem. Amer. Acad. Arts, n. s. 4: 103 (1849)
Distribution: USA (California)
76 USA
Synonyms: hidden
= Blepharipappus fremontii (Torr. & A.Gray) Greene; Pittonia 2: 246 (1892), et Man. Bot. San Francisco 201 (1894)
= Calliachyris fremontii Torr. & A.Gray; Boston J. Nat. Hist. 5: 110 (1844)
species :
Layia gaillardioides Hook. & Arn.; Bot. Beechey Voy. 148 (1833), as ´galardioides´
Distribution: USA (California)
76 USA
Synonyms: hidden
= Aspilia laxa (DC.) S.F.Blake; Contr. Gray Herb. 54: 187 (1918)
= Blepharipappus gaillardioides (Hook. & Arn.) Greene; Pittonia 2: 246 (1892), et Man. Bot. San Francisco 200 (1894)
= Blepharipappus nemorosus Greene; Man. Bot. San Francisco 200 (1894)
= Caenotus longifolius (Cass.) Raf.; Fl. Tellur. 2: 50 (1837)
= Conyza tuberosa Lam. ex Steud.; Nomencl. Bot. [Steudel], ed. 2, 1: 415 (1841), nom. inval.
= Dumerilia auriculata Steud.; Nomencl. Bot. [Steudel], ed. 1, 1: 287 (1821)
= Dumerilia crenata Steud.; Nomencl. Bot. [Steudel], ed. 1, 1: 287 (1821)
= Erigeron longifolius (Cass.) Desf.; Tabl. École Bot., ed. 3 (Cat. Pl. Horti Paris.) 400 (1829)
= Gynura cacalioides (Less.) Fern.-Vill.; Fl. Filip. [Blanco], ed. 3, Nov. App. 4(13A): 120 (1880)
= Layia nemorosa (Greene) Jeps.; Fl. W. Calif. [Jepson] 448 (1911)
= Leontodon taraxacum var. alpestris Gaudin; Fl. Helv. 5: 63 (1829)
= Porophyllum cacalioides (Less.) DC.; Prodr. [A.P. de Candolle] 5: 650 (1836)
= Tridax galardioides Hook. & Arn.; Bot. Beechey Voy. 148 (1833)
= Urostylis gaillardioides (Hook. & Arn.) Meisn.; Pl. Vasc. Gen. [Meisner] 207 (1837), Comm. 133 (1839)
species :
Layia glandulosa (Hook.) Hook. & Arn.; Bot. Beechey Voy. Suppl. 358 (1839)
Distribution: USA (Arizona, California, Idaho, New Mexico, Oregon, Utah, Washington); Mexico (Baja California Norte)
73 USA 76 USA 77 USA 79 MEX
Synonyms: hidden
= Blepharipappus glandulosus Hook.; Fl. Bor.-Amer. [Hooker] 1: 316 (1833)
= Blepharipappus hispidus (Greene) Greene; Pittonia 2: 246 (1892)
= Blepharipappus neomexicanus Greene; Pittonia 3: 168 (1897)
= Blepharipappus oreganus Greene; Pittonia 2: 246 (1892)
= Eriopappus glandulosus (Hook.) Arn.; Intr. Nat. Syst. Bot., ed. 2: 443 (1836)
= Layia douglasii Hook. & Arn.; Bot. Beechey Voy. 358 (1839)
= Layia glandulosa subsp. lutea D.D.Keck; Madroño 3: 18 (1935)
= Layia glandulosa var. hispida (Greene) Jeps.; Man. Fl. Pl. Calif. [Jepson] 1101 (1925)
= Layia glandulosa var. lutea (D.D.Keck) Hoover; Vasc. Pl. San Luis Obispo Co. 285 (1970)
= Layia glandulosa var. rosea A.Gray; Bot. California [W.H.Brewer] 1: 368 (1876)
= Layia hispida Greene; Pittonia 2: 20 (1889)
= Layia neomexicana A.Gray; Smithsonian Contr. Knowl. 5(6): 98 (1853)
= Madaroglossa angustifolia DC.; Prodr. [A.P. de Candolle] 5: 694 (1836)
species :
Layia heterotricha (DC.) Hook. & Arn.; Bot. Beechey Voy. Suppl. 358 (1839)
Distribution: USA (California)
76 USA
Synonyms: hidden
= Blepharipappus glandulosus var. heterotrichus (DC.) Jeps.; Fl. W. Calif. [Jepson] 536 (1901)
= Blepharipappus graveolens (Greene) Greene; Pittonia 2: 246 (1892), et Man. Bot. San Francisco 200 (1894)
= Blepharipappus heterotrichus (DC.) Greene; Pittonia 2: 245 (1892)
= Layia glandulosa var. heterotricha (DC.) H.M.Hall; Univ. Calif. Publ. Bot. 3: 157 (1907)
= Layia graveolens Greene; Bull. Calif. Acad. Sci. 1(3): 92 (1885)
= Layia heterotricha var. major A.Gray; Syn. Fl. N. Amer., ed. 2, 1(2): Suppl. 451 (1886)
= Madaroglossa heterotricha DC.; Prodr. [A.P. de Candolle] 5: 694 (1836)
species :
Layia hieracioides (DC.) Hook. & Arn.; Bot. Beechey Voy. Suppl. 358 (1839)
Distribution: USA (California)
76 USA
Synonyms: hidden
= Blepharipappus hieracioides (DC.) Greene; Pittonia 2: 246 (1892), et Man. Bot. San Francisco 200 (1894)
= Blepharipappus hieracioides f. anomala Bioletti; Erythea 1: 69 (1893)
= Blepharipappus hieracioides Greene; Pittonia 2: 246 (1892)
= Blepharipappus hieracioides var. anomala Bioletti; Man. Bot. San Francisco 200 (1894)
= Layia paniculata D.D.Keck; Aliso 4: 107 (1958)
= Madaroglossa hieracioides DC.; Prodr. [A.P. de Candolle] 5: 694 (1836)
species :
Layia jonesii A.Gray; Proc. Amer. Acad. Arts 19: 18 (1883)
Distribution: USA (California)
76 USA
Synonyms: hidden
= Blepharipappus jonesii (A.Gray) Greene; Pittonia 2: 247 (1892)
= Callichroa jonesii (A.Gray) Greene; Pittonia 2: 228 (1892)
species :
Layia leucopappa D.D.Keck; Madroño 3: 17 (1935)
Distribution: USA (California)
76 USA
species :
Layia munzii D.D.Keck; Madroño 3: 16 (1935)
Distribution: USA (California)
76 USA
species :
Layia pentachaeta A.Gray; Pacif. Railr. Rep. 4 [Whipple]: 108, t. 16 (1857)
subspecies :
subsp. pentachaeta
Distribution: USA (California)
76 USA
Synonyms: hidden
= Blepharipappus pentachaetus (A.Gray) Greene; Pittonia 2: 246 (1892)
= Layia pentachaeta var. hansenii Jeps.; Madroño 1: 201 (1929)
subspecies :
subsp. albida D.D.Keck; Aliso 4: 107 (1958)
Distribution: USA (California)
76 USA
Synonyms: hidden
= Layia pentachaeta var. albida (D.D.Keck) Hoover; Vasc. Pl. San Luis Obispo Co. 286 (1970)
species :
Layia platyglossa (Fisch. & C.A.Mey.) A.Gray; Mem. Amer. Acad. Arts, n. s. 4: 103 (1849)
Name: Coastal Tidy Tips
Distribution: USA (California); Mexico (Baja California Norte); +Isla Guadalupe
76 USA 79 GLP MEX
Synonyms: hidden
= Blepharipappus elegans (Nutt.) Greene; Pittonia 2: 246 (1892)
= Blepharipappus platyglossus (Fisch. & C.A.Mey.) Greene; Pittonia 2: 246 (1892), et Man. Bot. San Francisco 201 (1894)
= Callichroa angustifolia (Nutt.) Walp.; Repert. Bot. Syst. [Walpers] 2: 632 (1847)
= Callichroa hirsuta (Nutt.) Walp.; Repert. Bot. Syst. [Walpers] 2: 632 (1847)
= Callichroa platyglossa Fisch. & C.A.Mey.; Index Sem. (St. Petersburg [Petropolitanus]) 2: 31 (1835)
= Layia elegans (Nutt.) Torr. & A.Gray; Fl. N. Amer. [Torrey & A.Gray] 2: 394 (1843)
= Layia platyglossa subsp. campestris D.D.Keck; Aliso 4: 106 (1958)
= Layia platyglossa var. breviseta A.Gray; Bot. California [W.H.Brewer] 1: 370 (1876)
= Layia ziegleri Munz; Suppl. Calif. Fl. [Munz] 149 (1968)
= Madaroglossa angustifolia Nutt.; Trans. Amer. Philos. Soc., n. s. 7: 394 (1840)
= Madaroglossa elegans Nutt.; Trans. Amer. Philos. Soc., n. s. 7: 393 (1841)
= Madaroglossa hirsuta Nutt.; Trans. Amer. Philos. Soc., n. s. 7: 394 (1840)
species :
Layia septentrionalis D.D.Keck; Aliso 4: 106 (1958)
Distribution: USA (California)
76 USA
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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