Lathyrus palustris Linnaeus. Marsh Pea, Marsh Vetchling. Phen: May-Aug; Jul-Sep. Hab: Tidal freshwater marshes, calcareous fens, bottomland forests, other marshes, streambanks. Dist: Circumboreal, ranging in North America south to DE, VA, ne. NC, ec. GA, OH, IN, MO, CO, and CA.

Origin/Endemic status: Native

Synonymy: = K1, K3, K4, Mi, NE, NY, Pa, RAB, SE3, Tn, Va, Isely (1998); > Lathyrus myrtifolius Muhl. ex Willd. – S; > Lathyrus palustris L. var. linearifolius Ser. – F, G; > Lathyrus palustris L. var. macranthus (T.G.White) Fernald – F; > Lathyrus palustris L. var. myrtifolius (Muhl. ex Willd.) A.Gray – F, G, Il, WV; > Lathyrus palustris L. var. palustris – C, F, G, Il, WV; > Lathyrus palustris L. var. pilosus (Cham.) Ledeb. – F; > Lathyrus palustris L. var. retusus Fernald & H.St.John – F

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