Ludwigia lanceolata Elliott. Section: Isnardia. Lanceleaf Seedbox. Phen: Aug-Sep. Hab: Pocosins, interdune ponds, open wet areas. Dist: Se. NC south to c. peninsular FL, west to Panhandle FL.
Origin/Endemic status: Endemic
Taxonomy Comments: This species is tetraploid (n = 16). Peng (1989) discusses various fertile hybrids and intergrades of this species with others, including L. ×simulata Small (pro sp.), the hybrid L. lanceolata x pilosa.
Synonymy: = Fl4, FNA10, K1, K3, K4, RAB, S, WH3, Peng (1989), Wagner, Hoch, & Raven (2007); < Ludwigia alata Elliott – GW2
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