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World Checklist of Selected Plant Families (WCSP)

Helanthium parvulum (Engelm.) Small in N.L.Britton & al. (eds.), N. Amer. Fl. 17: 45 (1909).

This name is a synonym.

Accepted Name: Helanthium tenellum (Mart. ex Schult.f.) J.G.Sm. in N.L.Britton, Man. Fl. N. States, ed. 2: 54 (1905).
Family: Alismataceae
Homotypic Names:

* Echinodorus parvulus Engelm. in A.Gray, Manual, ed. 2: 439 (1856).

Echinodorus tenellus var. parvulus (Engelm.) Fassett, Rhodora 57: 185 (1955).

* Basionym/Replaced Synonym

Original Compiler: R.Govaerts