Bidens trichosperma (Michaux) Britton. Northern Tickseed-sunflower. Phen: Aug-Oct. Hab: Tidal marshes, other marshes. Dist: QC, MN, and SD south to ne. FL, GA, LA, and NE. Reports from the deep South are mostly or entirely based on misidentifications of B. mitis.

Origin/Endemic status: Native

Synonymy: = Fl7, FNA21, K3, K4, Mi, NE, NY, Pa, Va, WH3; = Bidens coronata (L.) Britton – C, G, GrPl, GW2, K1, Oh3, RAB, S, SE1, name invalid; = Bidens trichosperma (Michx.) Britton var. trichosperma – Il; > Bidens coronata (L.) Britton var. brachyodonta Fernald – F; > Bidens coronata (L.) Britton var. coronata – F, Sherff & Alexander (1955); > Bidens coronata (L.) Britton var. trichosperma (Michx.) Fernald – F

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