Species: ~ 10
Geography: America.
- Pontederia angustifolia Pursh `= Pontederia cordata
- Pontederia aquatica Vell. -- Fl. Flum. 144; iii. t. 164. = Eichhornia azurea
- Pontederia brasiliensis Willd. ex Schult.f. -- Syst. Veg., ed. 15 bis [Roemer & Schultes] 7(2): 1145. (1830), - Brazil.
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Pontederia cordata L. -- Sp. Pl. 1: 288. (1753), (Hechtkraut, Herzförmige Pontederie), - tropical America.
- Pontederia coerulea Maund ex Steud. , - nothern America.
- Pontederia crassipes Mart. Nova Genera et Species Plantarum (1816) = Eichhornia crassipes (Mart.) Solms .
- Pontederia heterantherimorpha Schwartz -- Bot. Jahrb. Syst. lxi. Beibl. 139, 41. (1927), - Brazil, Goyaz.
- Pontederia maculata Donn -- Hort. Cantabrig., ed. 6. 81. 1811), - North America.
- Pontederia nymphaefolia Kunth -- Enum. Pl. [Kunth] iv. 126., - Brazil.
- Pontederia oblonga Larrańaga -- Escritos Damaso Antonio Larranaga ii. 134 (1923), - Uruguay.
- Pontederia ovata Hook. & Arn. -- Bot. Beechey Voy. 218., - China.
- Pontederia parviflora Alexander -- N. Amer. Fl. xix. 59 (1937), - Panama, South America.
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Pontederia rotundifolia L.f. -- Pl. Surin. 7. (1775), -
syn.: Reussia rotundifolia (L.f.) Castell.
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