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Photographer: Merel R. Black
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Family Asteraceae
Bidens coronatus (L.) Britton
northern tickseed-sunflower, tall swamp marigold
Bidens: derived from Latin bis, "twice," and dens, "tooth," hence meaning "2-toothed" and referring to the bristles on the achenes
coronatus: of crowns
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| Status: | Native |
| Plant: | erect, annual/biennial, 6"-60" tall, smooth forb |
| Flower: | head 1 1/2"-2 1/2" wide with 8 yellow rays 1/2"-1" long, leafy bracts usually shorter than the 1/3"-1/2" wide disk; inflorescence of a few long-stalked heads; blooms Aug.-Oct. |
| Fruit: | dry, dark, with 2- bristly awns, mostly flat, 2 1/2 to 4 times as long as wide  |
| Leaf: | pinnately-divided into 3-7 lance-like, pointed segments |
| Habitat: | wet; meadows, marshes, shores |
| (Glossary) |
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