Equisetum scirpoides Michaux. Dwarf Scouring-Rush. Phen: Aug-Sep. Hab: Fens, conifer swamps. Dist: Circumboreal, south in North America to MA, CT, s. NY, nw. PA, n. IL, ne. IA, SD, WY, ID, and WA.
Origin/Endemic status: Native
Synonymy: = C, F, FNA2, G, GrPl, Il, K3, K4, NE, NY; = n/a – Pa
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