Ludwigia octovalvis (Jacquin) Raven. Section: Macrocarpon. Mexican Primose-willow. Phen: May-Sep. Hab: Marshes, disturbed areas. Dist: Se. NC south to s. FL, west to TX; and widespread in tropical America; Old World tropics and subtropics.

Origin/Endemic status: Native

Synonymy: = Ar, Bah, Fl4, FNA10, GW2, K3, K4, Meso4.1, Mex, NcTx, Tx, WH3, Wagner, Hoch, & Raven (2007); = n/a – RAB; > Jussiaea angustifolia Lam. – S; > Jussiaea scabra Willd. – S; > Ludwigia octovalvis (Jacq.) Raven ssp. octovalvis – K1; > Ludwigia octovalvis (Jacq.) Raven ssp. sessiliflora (Micheli) Raven – K1

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