Microseridinae

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Systematics

The subtribe Microseridinae, following the circumscription by Kilian & al. (2009), comprises c. 115 species in c. 22 genera, of which all but one are principally North American. Picrosia is South American and one species (Microseris) is present in Australia and New Zealand as the results of long distant dispersal. Excluded is the unispecific genus Phalacroseris, which has been shown by Gemeinholzer & al. (in Kilian & al. 2009) to belong to the principally Old World subtribe Cichoriinae.

Previously the American clade has been treated as two (Stebbins 1953; Jeffrey 1966), three (Bremer 1994; Lack 2006) or nine (Lee & Baldwin 2004) subtribes or informal entities, respectively. Considering their radiation from a single common ancestor, it is, however, much more consistent with the phylogeny and the suprageneric classification of the entire tribe to reserve the subtribal rank to the American clade as such and to apply Lee & Baldwin’s classification to a subordinate informal rank of, e.g., "alliances". These are:
  1. Pinaropappus alliance: including Marshalljohnstonia and Pinaropappus
  2. Krigia alliance: including Krigia
  3. Pyrrhopappus alliance: including Picrosia and Pyrrhopappus
  4. Lygodesmia alliance: including Chaetadelpha, Lygodesmia and Shinnersoseris
  5. Glyptopleura alliance: including Glyptopleura
  6. Microseris alliance: including Agoseris, Microseris, Nothocalais, Stebbinsoseris and Uropappus
  7. Stephanomeria alliance: including Munzothamnus, Pleiacanthus, Prenanthella, Rafinesquia and Stephanomeria
  8. Malacothrix alliance: including Anisocoma, Atrichoseris, Calycoseris and Malacothrix.
Generic circumscription is in a few cases still disputable in the light of the molecular analysis by Lee & al. (2003). This also affects Malacothrix as one of the larger genera of the American clade, which has been shown to be polyphyletic.A,B,C,D,E,F

Distribution

Australasia: New South Wales (Australian Capital Territorynative, New South Walesnative); New Zealand North (New Zealand Northnative); New Zealand South (New Zealand Southnative); Northern Territory (Northern Territorynative); Queensland (Queenslandnative); South Australia (South Australianative); Tasmania (Tasmanianative); Victoria (Victorianative); Western Australia (Western Australianative) Northern America: Alabama (Alabamanative); Alaska (Alaskanative); Alberta (Albertanative); Arizona (Arizonanative); Arkansas (Arkansasnative); British Columbia (British Columbianative); California (Californianative); Colorado (Coloradonative); Connecticut (Connecticutnative); Delaware (Delawarenative); Florida (Floridanative); Georgia, U.S.A. (Georgia, U.S.A.native); Idaho (Idahonative); Illinois (Illinoisnative); Indiana (Indiananative); Iowa (Iowanative); Kansas (Kansasnative); Kentucky (Kentuckynative); Louisiana (Louisiananative); Maine (Mainenative); Manitoba (Manitobanative); Maryland (Marylandnative); Massachusetts (Massachusettsnative); Mexican Pacific Is. (Guadalupe I.native); Mexico Central (Mexico Distrito Federalnative, Morelosnative, México Statenative, Pueblanative, Tlaxcalanative); Mexico Gulf (Veracruznative); Mexico Northeast (Aguascalientesnative, Chihuahuanative, Coahuilanative, Durangonative, Guanajuatonative, Hidalgonative, Nuevo Leónnative, Querétaronative, San Luis Potosínative, Tamaulipasnative, Zacatecasnative); Mexico Northwest (Baja Californianative, Sonoranative); Mexico Southwest (Guerreronative, Jalisconative, Michoacánnative, Nayaritnative, Oaxacanative); Michigan (Michigannative); Minnesota (Minnesotanative); Mississippi (Mississippinative); Missouri (Missourinative); Montana (Montananative); Nebraska (Nebraskanative); Nevada (Nevadanative); New Hampshire (New Hampshirenative); New Jersey (New Jerseynative); New Mexico (New Mexiconative); New York (New Yorknative); North Carolina (North Carolinanative); North Dakota (North Dakotanative); Northwest Territories (Northwest Territoriesnative); Ohio (Ohionative); Oklahoma (Oklahomanative); Ontario (Ontarionative); Oregon (Oregonnative); Pennsylvania (Pennsylvanianative); Québec (Québecnative); Rhode I. (Rhode I.native); Saskatchewan (Saskatchewannative); South Carolina (South Carolinanative); South Dakota (South Dakotanative); Tennessee (Tennesseenative); Texas (Texasnative); Utah (Utahnative); Vermont (Vermontnative); Virginia (Virginianative); Washington (Washingtonnative); West Virginia (West Virginianative); Wisconsin (Wisconsinnative); Wyoming (Wyomingnative); Yukon (Yukonnative) Southern America: Argentina Northeast (Argentina Distrito Federalnative, Buenos Airesnative, Chaconative, Corrientesnative, Córdobanative, Entre Ríosnative, Formosanative, La Pampanative, Misionesnative); Argentina Northwest (Catamarcanative, Jujuynative, La Riojanative, Mendozanative, Saltanative, San Juannative, San Luisnative, Santiago del Esteronative, Tucumannative); Argentina South (Chubutnative, Neuquénnative, Rio Negronative, Santa Cruznative, Santa Fénative, Tierra del Fuego (Argentina)native); Brazil South (Paranánative, Rio Grande do Sulnative, Santa Catarinanative); Chile Central (Biobíonative, Coquimbonative, La Araucanianative, Maulenative, O'Higginsnative, Santiagonative, Valparaísonative); Chile North (Antofagastanative, Atacamanative, Tarapacanative); Chile South (Aisénnative, Los Lagosnative, Magellanesnative); Guatemala (Guatemalanative); Leeward Is. (Guadeloupenative); Paraguay (Paraguaynative); Uruguay (Uruguaynative)

Bibliography

A. Bremer K., Asteraceae. Cladistics and classification. 1994
B. Jeffrey C., Notes on Compositae: I. The Cichorieae in East Tropical Africa in Kew Bull. 18: 427-486. 1966
C. Kilian N., Gemeinholzer B. & Lack H. W. - Tribe Cichorieae in Funk V. A., Susanna A., Stuessy T. & al., Systematics, evolution and biogeography of Compositae. 2009
D. Lack H. W. - Cichorieae in Kadereit J. W. & Jeffrey C., The families and genera of vascular plants 8. 2006
E. Lee J. & Baldwin B. G., Subtribes of principally North American genera of Cichorieae (Compositae) in Novon 14: 309-313. 2004
F. Stebbins G. L., A new classification of the tribe Cichorieae, family Compositae in Madroño 12: 65-81. 1953