Hydrilla verticillata (L.f.) Royle, Ill. Bot. Himal. Mts. t. 376 1839. (Syn: Elodea verticillata (L.f.) F.Muell.; Epigynanthus blumei Hassk. [Invalid]; Hydora lithuanica (Rchb.) Besser; Hydrilla angustifolia Hassk.; Hydrilla dentata Casp.; Hydrilla dentata var. pomeranica (Rchb.) Casp.; Hydrilla lithuanica (Rchb.) Dandy; Hydrilla najadifolia Zoll. & Moritzi; Hydrilla ovalifolia Rich. [Illegitimate]; Hydrilla polysperma Blatt.; Hydrilla roxburghii Steud.; […]