Flaveria Bidentis
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''Flaveria bidentis'', the coastal plain yellowtops, is a South American plant species of ''
Flaveria ''Flaveria'' is a genus of plants in the family Asteraceae. They are sometimes called yellowtops. Some are annual or perennial herbs and some are shrubs. They bear yellow flowers in heads, with zero, one, or two ray florets in each head. These p ...
'' within the family
Asteraceae Asteraceae () is a large family (biology), family of flowering plants that consists of over 32,000 known species in over 1,900 genera within the Order (biology), order Asterales. The number of species in Asteraceae is rivaled only by the Orchi ...
. It is native to South America, and naturalized in many places (Mexico, Central America, the West Indies, the southeastern United States, Europe, Africa, Asia, etc.).Flora of China, ''Flaveria bidentis'' (Linnaeus) Kuntze, 1898. 黄顶菊 huang ding ju
/ref> In the U.S. it was introduced into the states of Georgia, Alabama and Florida. ''Flaveria bidentis'' is an annual herb up to tall. One plant can sometimes produce 100 or more flower heads in a tightly packed array. Each head contains 3-8 yellow disc flowers. Sometimes the head also contains a single yellow ray flower.Powell, Albert Michael. 1979. Annals of the Missouri Botanical Garden 65(2): 623-626
description and commentary in English, South American distribution map on page 624


References

bidentis Flora of Southern America Plants described in 1767 {{Asteroideae-stub