Comarum palustre Linnaeus. Purple Marshlocks, Marsh-potentilla. Phen: Jun-Aug. Hab: Fens, seepage swamps, peaty shorelines, wet meadows, and bogs. Dist: Circumboreal, south in North America to n. NJ, PA, c. OH, sc. IN, n. IL, IA, ND, CO, ID, and CA.

Origin/Endemic status: Native

Taxonomy Comments: This circumboreal species is variable in morphology and chromosome number.

Synonymy: = FNA9, Il, K3, K4, Mi, NE, NY; = Potentilla palustris (L.) Scop. – C, G, Pa; > Potentilla palustris (L.) Scop. var. palustris – F; > Potentilla palustris (L.) Scop. var. parvifolia (Raf.) Fernald & Long – F; > Potentilla palustris (L.) Scop. var. villosa (Pers.) Lehm. – F

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