Family: Asteraceae Aster Family
Genus: Bidens Beggartick
About 230 species worldwide of weedy herbs. All species have yellow disk flowers and fruits with two to four barbed bristles.
Scientific Name: Bidens cernua L.
Bidens cernuus L.
Common Name(s): Nodding Beggar-ticks, Nodding Bur-marigold, Bur Marigold
Growth Type: annual
Species Description:
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 | Caption: Nodding beggartick's toothed leaves and nodding yellow flowers.
ID: Hrb-BIDCE-001
Source: 35mm slide (photo)
Credit:
Keyword(s): flowering, inflorescense, leaf
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 | Caption: Nodding Beggarticks' undivided leaves and yellow ray and disk flowers.
ID: Hrb-BIDCE-002
Source: 35mm slide (photo)
Credit:
Keyword(s): flowering, inflorescense, leaf
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