Helanthium tenellum (Mart. ex Schult.f.) J.G.Sm. [ Echinodorus tenellus (Mart. ex Schultes f.) Buchenau]
Helanthium tenellum (Mart. ex Schult.f.) J.G.Sm. [ Alisma tenellum Mart. ex Schultes f.] [Alismataceae]
J.C. Mutis, Draw. Roy. Bot. Exped. Granada: t. 233 (1783) [S.R. Blanco]