Astereae

From Wikipedia, the free encyclopedia

Astereae
Aster amellus
Scientific classification
Kingdom: Plantae Division: Magnoliophyta Class: Magnoliopsida Order: Asterales Family: Asteraceae Tribe: Astereae
Selected Genera
Acamptopappus Ampelaster Amphipappus Arida Aster Baccharis Bellis Bigelowia Boltonia Brintonia Chloracantha Chrysoma Chrysopsis Chrysothamnus Columbiadoria Corethrogyne Cuniculotinus Eastwoodia Ericameria Erigeron Eucephalus Eurybia Euthamia Grindelia Gundlachia Gutierrezia Gymnosperma Hazardia Herrickia Ionactis Isocoma Laënnecia Lorandersonia Neonesomia Nestotus Olearia Petradoria Pyrrocoma Solidago Symphyotrichum Thurovia Toiyabea Xanthisma Xylorhiza

Astereae is a tribe of plants in the family Asteraceae that includes annuals, biennials, perennials, subshrubs, shrubs and trees. Plants within the tribe are present nearly worldwide divided into 170 genera and more than 2,800 species. They are found primarily in temperate regions of the world.^[1]

The taxonomy of the tribe Astereae has been dramatically changed after both morphologic and molecular evidence suggested that large genera such as Aster, as well as many others, needed to be separated into several genera or shifted to better reflect the plants' relationships. A paper by R. D. Noyes and L. H. Rieseberg showed that most of the genera within the tribe in North America actually belong to a single clade, meaning they have a common ancestor. This is referred to as the North American clade. G.L. Nesom and H. Robinson have been two of the most important taxonomists involved in the recent work and are continuing to re-categorise the genera within the tribe worldwide.^[1]

[edit] References

1. ^ ^{a b} Brouillet, Luc; Barkley, Theodore M.; Strother, John L. (2006), “Astereae”, in Flora of North America Editorial Committee, eds. 1993+, Flora of North America, vol. 20, New York & Oxford: Oxford University Press, pp. 3