Bidens frondosa L.  
Family: Asteraceae
common beggar-ticks, devil's beggar-ticks
[Bidens frondosa f. anomala L., Bidens frondosa var. anomala L., Bidens frondosa var. caudata L., Bidens frondosa var. frondosa L., Bidens frondosa var. pallida L., Bidens frondosa var. stenodonta L.]
Bidens frondosa 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, 8"-48" tall, mostly smooth forb
Leaves: stalked, 3-5 pinnately-divided into lance-like, toothed, pointed leaflets
Flowers: head with an orange to greenish-brown disk 1/3" wide, usually without rays, 5-9 leafy bracts usually longer than the disk; inflorescence a few long-stalked heads; blooms June-Oct.
Fruits: flat, brown to black, often hairy with 2-barbed awnsfruit drawing
Habitat: wet to moist; disturbed areas
Conservation Status: Native
Bidens frondosa image
Emmet J. Judziewicz  
Bidens frondosa image
Robert W. Freckmann  
Bidens frondosa image
Paul Drobot  
Bidens frondosa image
Merel R. Black  
More Images    View Genus       View Specimen Records       Close window