Helanthium tenellus (Mart. ex Schult. & Schult.f.) Buchenau species synonym

Helianthium tenellum (Mart.) Britton species synonym

Alisma tenellum Mart. species homotypic synonym

Echinodorus latifolius Seub., 1982 species synonym

Helanthium bolivianum (Rusby) Lehtonen & Myllys species accepted

Alisma tenellum f. latifolium Seub. form synonym

Alisma bolivianum Rusby species synonym

Helanthium tenellum (Mart. ex Schult.f.) J.G.Sm. species accepted

Alisma ranunculoides var. brasiliense A.St.-Hil. variety synonym

Helianthium parvulum (Engelm.) Small species synonym

Helanthium parvulum (Engelm.) Small species synonym

Helianthium tenellum (Mart. ex Schult.f.) J.G.Sm. species synonym

Alisma tenellum Mart. ex Schult.f. species synonym

Helanthium zombiense (Jérémie) Lehtonen & Myllys species accepted

Echinodorus parvulus f. randii Fassett form synonym

Echinodorus zombiensis Jérémie species synonym

Helanthium tenellum (Mart.) Britton species synonym

Echinodorus quadricostatus var. xinguensis Rataj variety synonym

Echinodorus magdalenensis Fassett species synonym

Echinodorus angustifolius Rataj species synonym

Echinodorus quadricostatus var. magdalenensis (Fassett) Rataj variety synonym

Echinodorus bolivianus (Rusby) Holm-Niels. species synonym

Echinodorus tenellus var. latifolius (Seub.) Fassett variety synonym

Echinodorus austroamericanus Rataj species synonym

Echinodorus isthmicus Fassett species synonym

Echinodorus latifolius (Seub.) Rataj species synonym

Echinodorus tenellus f. apanecae Fassett form synonym

Echinodorus xinguensis (Rataj) Rataj species synonym

Echinodorus australis Rataj species synonym

Echinodorus quadricostatus Fassett species synonym

Echinodorus tenellus var. ecostatus Fassett variety synonym

Echinodorus tenellus (Mart. ex Schult.f.) Buchenau species synonym

Echinodorus parvulus Engelm. species synonym

Echinodorus tenellus f. randii Fassett form synonym

Sagittaria tenella (Mart. ex Schult.f.) Kuntze species synonym

Echinodorus subulatus Engelm. species synonym

Echinodorus tenellus var. parvulus (Engelm.) Fassett variety synonym

Echinodorus tenellus var. tenellus variety synonym