Microseridinae

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Microseridinae

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 Territory native, New South Wales native); New Zealand North native; New Zealand South native; Queensland (Queensland native); South Australia native; Tasmania native; Victoria native; Western Australia (Western Australia native) Northern America: Alabama native; Alaska native; Alberta native; Arizona nativenative; Arkansas native; British Columbia native; California nativenative; Colorado native; Connecticut native; Delaware native; Florida native; Georgia, U.S.A. native; Idaho native; Illinois native; Indiana native; Iowa native; Kansas native; Kentucky native; Louisiana native; Maine native; Manitoba native; Maryland native; Massachusetts native; Mexican Pacific Is. (Guadalupe I. native); Mexico Central (Mexico Distrito Federal native, Morelos native, México State native, Puebla native, Tlaxcala native); Mexico Gulf (Veracruz native); Mexico Northeast (Aguascalientes native, Chihuahua native, Coahuila native, Durango native, Guanajuato native, Hidalgo native, Nuevo León native, Querétaro native, San Luis Potosí native, Tamaulipas native, Zacatecas native); Mexico Northwest (Baja California native, Baja California Sur native, Sinaloa native, Sonora native); Mexico Southeast (Chiapas native); Mexico Southwest (Colima native, Guerrero native, Jalisco native, Michoacán native, Nayarit native, Oaxaca native); Michigan native; Minnesota native; Mississippi native; Missouri native; Montana native; Nebraska native; Nevada native; New Hampshire native; New Jersey native; New Mexico native; New York native; North Carolina nativenative; North Dakota native; Northwest Territories native; Ohio native; Oklahoma native; Ontario native; Oregon native; Pennsylvania native; Québec native; Rhode I. native; Saskatchewan native; South Carolina native; South Dakota native; Tennessee native; Texas native; Utah nativenative; Vermont native; Virginia native; Washington native; West Virginia native; Wisconsin native; Wyoming native; Yukon native Southern America: Argentina Northeast (Argentina Distrito Federal native, Buenos Aires native, Chaco native, Corrientes native, Córdoba native, Entre Ríos native, Formosa native, La Pampa native, Misiones native); Argentina Northwest (Catamarca native, Jujuy native, La Rioja native, Mendoza native, Salta native, San Juan native, San Luis native, Santiago del Estero native, Tucuman native); Argentina South (Chubut native, Neuquén native, Rio Negro native, Santa Cruz native, Santa Fé native, Tierra del Fuego (Argentina) native); Bolivia native; Brazil South (Paraná native, Rio Grande do Sul native, Santa Catarina native); Chile Central native (Biobío native, Coquimbo native, La Araucania native, Maule native, O'Higgins native, Santiago native, Valparaíso native); Chile North (Antofagasta native, Atacama native, Tarapaca native); Chile South (Aisén native, Los Lagos native, Magellanes native); Guatemala native; Paraguay native; Peru native; Uruguay native

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