Bidens vulgata Greene  
Family: Asteraceae
big devil's beggar-ticks, tall beggar-ticks
[Bidens frondosa var. puberula L., Bidens puberula (Wiegand) Rydb., Bidens vulgata f. puberula Greene, Bidens vulgata var. puberula Greene, Bidens vulgata var. schizantha Greene, Bidens vulgata var. vulgata Greene]
Bidens vulgata image
Hugh H. Iltis  
Etymology: Bidens: derived from Latin bis, "twice," and dens, "tooth," hence meaning "2-toothed" and referring to the bristles on the achenes
Plants: erect, annual, 4"-60" tall, smooth to densely hairy forb
Leaves: stalked, 3-5 pinnately-divided into lance-like, toothed, pointed leaflets
Flowers: head usually without rays, disk 1/3"-1/2" wide; 10-20 leafy bracts usually longer than the disk; inflorescence a few long-stalked heads; blooms Aug.-Oct.
Fruits: dark but often yellowish with 2 barbed awns fruit drawing
Habitat: wet to dry; disturbed sites
Conservation Status: Native
Bidens vulgata image
Robert W. Freckmann  
Bidens vulgata image
Merel R. Black  
Bidens vulgata image
Robert H. Read  
Bidens vulgata image
Robert W. Freckmann  
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