Hydrolea uniflora Rafinesque. Phen: Jun-Sep. Hab: Swamp forests, sloughs, marshes. Dist: Mainly in the Mississippi River Alluvial Plain, west to e. TX and east to AL, TN, and KY.
Origin/Endemic status: Endemic
Synonymy: = Ar, C, F, G, GW2, Il, K1, K3, K4, Tn, Tx; = Hydrolea affinis A.Gray; = Nama affine (A.Gray) Kuntze – S