Robert W. Freckmann Herbarium

  Bidens aristosa (Michx.) Britton image
Photographer: Robert W. Freckmann           

Robert W. Freckmann
Family Asteraceae
Bidens aristosa (Michx.) Britton
midwestern tickseed-sunflower, swamp marigold
Bidens: derived from Latin bis, "twice," and dens, "tooth," hence meaning "2-toothed" and referring to the bristles on the achenes
aristosa: bearded, furnished with awns; bristly
County distribution map- click for detailed distribution maps.
Detailed Distribution:
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Status: Native
Plant: annual/biennial forb

More Information Natural Communities Herbarium Specimens
All Bidens list Google- Images or Text

Flora of North America (off site)
Bidens aristosa (Michx.) Britton f. aristosa
Bidens aristosa (Michx.) Britton var. fritcheyi Fernald
Bidens aristosa (Michx.) Britton var. mutica (A.Gray) A.Gray ex Gatt.
Bidens aristosa (Michx.) Britton var. retrorsa (Sherff) Wunderlin
Bidens polylepis S.F.Blake var. retrorsa Sherff
Coreopsis aristosa Michx.
Coreopsis aristosa Michx. var. mutica A.Gray

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