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 Ageratum houstonianum
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About 170–180; see text for a longer list. |
Eupatorieae is a tribe of over 2000[1] species of plants in the aster family. The tribe includes both Northern Hemisphere and Southern Hemisphere plants. Well-known members are Stevia rebaudiana (known for its sweet leaves), a number of medicinal plants (for example in Eupatorium), and a variety of late summer to autumn blooming garden flowers, including Ageratum and Conoclinium (mistflower).
Plants in this tribe have only disc florets (no ray florets) and petals which are white, slightly yellowish off-white, pink, or purple (never a full yellow).[2][3]
Within the aster family, the Eupatorieae are nested within what has traditionally been the Heliantheae (broadly defined). Because this leads to a paraphyletic Heliantheae, various authors have proposed either making the Eupatorieae a subtribe within the Heliantheae, or breaking the Heliantheae into a dozen or so tribes.[2]
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Genera
There are approximately 170[2] to 180[4] genera in the Eupatorieae. The following list is incomplete:
- Acanthostyles - Adenostemma - Ageratina - Ageratum - Agrianthus - Amboroa - Aristeguietia - Ascidiogyne - Asplundianthus - Austroeupatorium - Ayapana - Ayapanopsis - Badilloa - Bartlettina - Brickellia - Brickelliastrum - Campuloclinium - Carminatia - Carphephorus - Carphochaete - Chromolaena - Condylidium - Conoclinium - Critonia - Critoniella - Cronquistianthus - Crossothamnus - Dasycondylus - Decachaeta - Ellenbergia - Eupatorium - Eutrochium - Ferreyrella - Fleischmannia - Fleischmanniopsis - Flyriella - Grosvenoria - Guevaria - Gymnocoronis - Hatschbachiella - Hebeclinium - Helogyne - Heterocondylus - Hughesia - Idiothamnus - Isocarpha - Kaunia - Koanophyllon - Lasiolaena - Liatris - Mikania - Neocabreria - Neocuatrecasia - Neomirandea - Nothobaccharis - Ophryosporus - Phalacraea - Piqueria - Pleurocoronis - Polyanthina - Praxelis - Raulinoreitzia - Santosia - Sciadocephala - Sclerolepis - Shinnersia - Stevia - Stomatanthes - Stylotrichium - Tamaulipa - Trilisa - Trichogonia - Uleophytum - Urolepis
Classification
Although the genus Eupatorium has at times contained as many as a third of the species in the tribe,[7] all but a few dozen of its species have been gradually moved into other genera.
A partial phylogeny of the tribe (focusing on Eupatorium and some of the other North American genera) is:[5]
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Although the division of the tribe into subtribes is still not clear (with some past divisions not being supported by molecular data[5]), several subtribes not covered above are:
- Gyptidinae, found mostly in eastern Brazil. Agrianthus, Campuloclinium, Lasiolaena, and Trichogonia.[1]
- Critoniinae. Critonia, Fleischmanniopsis, Ophryosporus, and Neocabreria.[1]
References
- ^ a b c d H. Robinson, R. M. King (February 1985). "Comments on the Generic Concepts in the Eupatorieae". Taxon 34 (1): 11–16. doi:.
- ^ a b c "187n. Asteraceae tribe Eupatorieae". Flora of North America (Vol. 21 Page 456, 459). Retrieved on 2007-10-06.
- ^ "Asteraceae Tribe EUPATORIEAE (draft)". Retrieved on 2007-10-06.
- ^ Mabberley. The Plant Book.
- ^ a b c Gregory J. Schmidt and Edward E. Schilling (2000). "Phylogeny and biogeography of Eupatorium (Asteraceae: Eupatorieae) based on nuclear ITS sequence data". American Journal of Botany 87: 716–726. doi:. PMID 10811796.
- ^ PLANTS
- ^ Alan Whittemore (August 1987). "The Sectional Nomenclature of Eupatorium (Asteraceae)". Taxon 36 (3): 618–620. doi:.
External links
- Almeida, Adriana M. (May, 2004). "Geographical distribution of Eupatorieae (Asteraceae) in South-eastern and South Brazilian Mountain Ranges". Plant Ecology 174 (1): 163–181. doi:. ISSN 1573-5052.
- Harold Robinson, A. Michael Powell, Gerald D. Carr, Robert M. King, James F. Weedin (1989). "Chromosome Numbers in Compositae, XVI: Eupatorieae II". Annals of the Missouri Botanical Garden 76 (4): 1004–1011. doi:.
- Cassini, Alexandre de (1794-1823). "unknown". Journal de Physique, de Chimie et d'Histoire Naturelle 88: 196. J. Phys. Chim. Hist. Nat. Arts. Retrieved on 2008-06-30.
Wikipedia content modification information:
- This page was last modified on 7 August 2008, at 01:54.
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