Ludwigia leptocarpa (Nuttall) Hara. Section: Seminudae. Water-willow. 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, S13, WV; = n/a – Pa, Tat; > Ludwigia leptocarpa (Nutt.) Hara ssp. leptocarpa – WI

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Wetland Indicator Status:

• Atlantic and Gulf Coastal Plain: OBL
• Eastern Mountains and Piedmont: OBL
• Great Plains: OBL
• Midwest: OBL

Heliophily: 7