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Photographer: Emmet J. Judziewicz
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Family Asteraceae
Bidens comosa (A.Gray) Wiegand
straw-stem beggar-ticks, swamp marigold, swamp tickseed
Bidens: derived from Latin bis, "twice," and dens, "tooth," hence meaning "2-toothed" and referring to the bristles on the achenes
comosa: hairy
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| Status: | Native |
| Plant: | erect, annual, 4"-80" tall, mostly smooth forb with straw-colored stems |
| Flower: | head with or without 1 1/2" rays, pale yellow to greenish disk 1/3"-3/4" wide, leafy bracts usually longer than the disk; inflorescence of a few stalked, erect heads; blooms Aug.-Oct. |
| Fruit: | usually with 3 barbed awns (the center one shortest), smooth except for the edges of the barbs, very flat  |
| Leaf: | mostly stalkless, usually toothed, simple but with 1-4 lobes near the base |
| Habitat: | moist to wet; disturbed areas |
| Notes: | similar to B. connatus; differing in stem and disk color and fruit. |
| (Glossary) |
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