Ludwigia leptocarpa (Nuttall) Hara. Section: Seminudae. Phen: Jun-Oct. Hab: Riverbanks, marshes, swamps, and ditches, often on logs or tree bases in deep swamps. Dist: VA south to c. peninsular FL, west to e. TX, north in the interior along the Mississippi and Ohio rivers to se. MO, s. IL, and w. WV; and in tropical America.
Origin/Endemic status: Native
Taxonomy Comments: Morphologically variable and of different ploidies (tetraploid and hexaploid) (Hoch 2021).
Synonymy: = Ar, C, Fl4, FNA10, GW2, Il, K1, K3, K4, Meso4.1, Mex, NcTx, RAB, Tn, Tx, Va, W, WH3, Wagner, Hoch, & Raven (2007); = Jussiaea leptocarpa Nutt. – F, G, S, WV; = n/a – Pa; > Ludwigia leptocarpa (Nutt.) Hara ssp. leptocarpa – WI