World Checklist of Selected Plant Families: Royal Botanic Gardens, Kew

Unisema cordata f. angustifolia (Pursh) Farw., Pap. Michigan Acad. Sci. 3: 92 (1924).

This name is a synonym.

Homotypic Names:
Accepted Name:	Pontederia cordata L., Sp. Pl.: 288 (1753).
Family:	Pontederiaceae
* Pontederia angustifolia Pursh, Fl. Amer. Sept. 1: 224 (1813). Pontederia cordata var. angustifolia (Pursh) Torr., Fl. N. Middle United States 1: 343 (1824). Pontederia cordata f. angustifolia (Pursh) Solms in A.L.P.P.de Candolle & A.C.P.de Candolle, Monogr. Phan. 4: 532 (1883). * Basionym/Replaced Synonym
Original Compiler:	R.Govaerts