Ludwigia alternifolia Linnaeus. Section: Ludwigia. Alternate-leaved Seedbox. Phen: May-Oct. Hab: Freshwater tidal marshes, ditches, other marshes, open wet places, disturbed wet places. Dist: MA west to s. ON, s. MI, IA, and KS, south to n. FL and e. TX.

Origin/Endemic status: Native

Synonymy: = Ar, Fl4, FNA10, G, GrPl, GW2, K1, K3, K4, Mi, NcTx, NE, NY, Pa, RAB, S, Tn, Tx, Va, W, WH3, Wagner, Hoch, & Raven (2007); > Ludwigia alternifolia L. var. alternifolia – C, F, Il, WV; > Ludwigia alternifolia L. var. linearifolia Britton – F, WV; > Ludwigia alternifolia L. var. pubescens E.J.Palmer & Steyerm. – C, F, Il

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