| 1 | Native | Northern America | North-Central U.S.A. | United States | Illinois | | FNA Editorial Committee. 2000. Flora of North America. 22:9. |
| 1 | Native | Northern America | North-Central U.S.A. | United States | Iowa | | FNA Editorial Committee. 2000. Flora of North America. 22:9. |
| 1 | Native | Northern America | North-Central U.S.A. | United States | Kansas | | FNA Editorial Committee. 2000. Flora of North America. 22:9. |
| 1 | Native | Northern America | North-Central U.S.A. | United States | Missouri | | FNA Editorial Committee. 2000. Flora of North America. 22:9. |
| 1 | Native | Northern America | North-Central U.S.A. | United States | Nebraska | | FNA Editorial Committee. 2000. Flora of North America. 22:9. |
| 1 | Native | Northern America | North-Central U.S.A. | United States | Oklahoma | | FNA Editorial Committee. 2000. Flora of North America. 22:9. |
| 1 | Native | Northern America | North-Central U.S.A. | United States | South Dakota | | FNA Editorial Committee. 2000. Flora of North America. 22:9. |
| 1 | Native | Northern America | North-Central U.S.A. | United States | Wisconsin | | FNA Editorial Committee. 2000. Flora of North America. 22:9. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Ohio | | FNA Editorial Committee. 2000. Flora of North America. 22:9. |
| 1 | Native | Northern America | Northern Mexico | Mexico | Baja California (Norte) | | Haynes, R. R. & L. B. Holm-Nielsen. 1994. The Alismataceae. Fl. Neotrop. Monogr. 64:39. |
| 1 | Native | Northern America | Northern Mexico | Mexico | Baja California Sur | | Haynes, R. R. & L. B. Holm-Nielsen. 1994. The Alismataceae. Fl. Neotrop. Monogr. 64:39. |
| 1 | Native | Northern America | Northern Mexico | Mexico | Chihuahua | | Haynes, R. R. & L. B. Holm-Nielsen. 1994. The Alismataceae. Fl. Neotrop. Monogr. 64:39. |
| 1 | Native | Northern America | Northern Mexico | Mexico | Coahuila de Zaragoza | | Haynes, R. R. & L. B. Holm-Nielsen. 1994. The Alismataceae. Fl. Neotrop. Monogr. 64:39. |
| 1 | Native | Northern America | Northern Mexico | Mexico | Nuevo León | | Haynes, R. R. & L. B. Holm-Nielsen. 1994. The Alismataceae. Fl. Neotrop. Monogr. 64:39. |
| 1 | Native | Northern America | Northern Mexico | Mexico | San Luis Potosí | | Haynes, R. R. & L. B. Holm-Nielsen. 1994. The Alismataceae. Fl. Neotrop. Monogr. 64:39. |
| 1 | Native | Northern America | Northern Mexico | Mexico | Sonora | | Haynes, R. R. & L. B. Holm-Nielsen. 1994. The Alismataceae. Fl. Neotrop. Monogr. 64:39. |
| 1 | Native | Northern America | Northern Mexico | Mexico | Tamaulipas | | Haynes, R. R. & L. B. Holm-Nielsen. 1994. The Alismataceae. Fl. Neotrop. Monogr. 64:39. |
| 1 | Native | Northern America | South-Central U.S.A. | United States | Texas | | FNA Editorial Committee. 2000. Flora of North America. 22:9. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Arkansas | | FNA Editorial Committee. 2000. Flora of North America. 22:9. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Florida | | FNA Editorial Committee. 2000. Flora of North America. 22:9. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Louisiana | | FNA Editorial Committee. 2000. Flora of North America. 22:9. |
| 1 | Native | Northern America | Southern Mexico | Mexico | Colima | | Haynes, R. R. & L. B. Holm-Nielsen. 1994. The Alismataceae. Fl. Neotrop. Monogr. 64:39. |
| 1 | Native | Northern America | Southern Mexico | Mexico | Guerrero | | Haynes, R. R. & L. B. Holm-Nielsen. 1994. The Alismataceae. Fl. Neotrop. Monogr. 64:39. |
| 1 | Native | Northern America | Southern Mexico | Mexico | Michoacán de Ocampo | | Haynes, R. R. & L. B. Holm-Nielsen. 1994. The Alismataceae. Fl. Neotrop. Monogr. 64:39. |
| 1 | Native | Northern America | Southern Mexico | Mexico | Veracruz de Ignacio de la Llave | | Haynes, R. R. & L. B. Holm-Nielsen. 1994. The Alismataceae. Fl. Neotrop. Monogr. 64:39. |
| 1 | Native | Northern America | Southern Mexico | Mexico | Yucatán | | Haynes, R. R. & L. B. Holm-Nielsen. 1994. The Alismataceae. Fl. Neotrop. Monogr. 64:39. |
| 1 | Native | Northern America | Southwestern U.S.A. | United States | California | | FNA Editorial Committee. 2000. Flora of North America. 22:9. |
| 1 | Native | Northern America | Southwestern U.S.A. | United States | Nevada | | FNA Editorial Committee. 2000. Flora of North America. 22:9. |
| 1 | Native | Northern America | Southwestern U.S.A. | United States | Utah | | FNA Editorial Committee. 2000. Flora of North America. 22:9. |
| 1 | Native | Southern America | Caribbean | Antigua and Barbuda | | | Haynes, R. R. & L. B. Holm-Nielsen. 1994. The Alismataceae. Fl. Neotrop. Monogr. 64:39. |
| 1 | Native | Southern America | Caribbean | Bahamas | | | Haynes, R. R. & L. B. Holm-Nielsen. 1994. The Alismataceae. Fl. Neotrop. Monogr. 64:39. |
| 1 | Native | Southern America | Caribbean | Barbados | | | Haynes, R. R. & L. B. Holm-Nielsen. 1994. The Alismataceae. Fl. Neotrop. Monogr. 64:39. |
| 1 | Native | Southern America | Caribbean | Cuba | | | Haynes, R. R. & L. B. Holm-Nielsen. 1994. The Alismataceae. Fl. Neotrop. Monogr. 64:39. |
| 1 | Native | Southern America | Caribbean | Dominican Republic | | | Haynes, R. R. & L. B. Holm-Nielsen. 1994. The Alismataceae. Fl. Neotrop. Monogr. 64:39. |
| 1 | Native | Southern America | Caribbean | Guadeloupe | | | Lehtonen, S. 2008. An integrative approach to species delimitation in Echinodorus (Alismataceae) and the description of two new species. Kew Bull. 63:530. |
| 1 | Native | Southern America | Caribbean | Haiti | | | Haynes, R. R. & L. B. Holm-Nielsen. 1994. The Alismataceae. Fl. Neotrop. Monogr. 64:39. |
| 1 | Native | Southern America | Caribbean | Jamaica | | | Haynes, R. R. & L. B. Holm-Nielsen. 1994. The Alismataceae. Fl. Neotrop. Monogr. 64:39. |
| 1 | Native | Southern America | Caribbean | Netherlands Antilles | Bonaire | | Haynes, R. R. & L. B. Holm-Nielsen. 1994. The Alismataceae. Fl. Neotrop. Monogr. 64:39. |
| 1 | Native | Southern America | Caribbean | United States | Puerto Rico | | Haynes, R. R. & L. B. Holm-Nielsen. 1994. The Alismataceae. Fl. Neotrop. Monogr. 64:39. |
| 1 | Native | Southern America | Caribbean | United States | Virgin Islands, U.S. | | Haynes, R. R. & L. B. Holm-Nielsen. 1994. The Alismataceae. Fl. Neotrop. Monogr. 64:39. |
| 1 | Native | Southern America | Northern South America | Guyana | | | Haynes, R. R. & L. B. Holm-Nielsen. 1994. The Alismataceae. Fl. Neotrop. Monogr. 64:39. |
| 1 | Native | Southern America | Northern South America | Venezuela | | | Lehtonen, S. 2008. An integrative approach to species delimitation in Echinodorus (Alismataceae) and the description of two new species. Kew Bull. 63:530. |
| 1 | Native | Southern America | Southern South America | Argentina | Neuquén | | Lehtonen, S. 2008. An integrative approach to species delimitation in Echinodorus (Alismataceae) and the description of two new species. Kew Bull. 63:530. |
| 1 | Native | Southern America | Southern South America | Argentina | Río Negro | | Haynes, R. R. & L. B. Holm-Nielsen. 1994. The Alismataceae. Fl. Neotrop. Monogr. 64:39. |
| 1 | Native | Southern America | Southern South America | Paraguay | | | Lehtonen, S. 2008. An integrative approach to species delimitation in Echinodorus (Alismataceae) and the description of two new species. Kew Bull. 63:530. |
| 1 | Native | Southern America | Western South America | Ecuador | Azuay | | Haynes, R. R. & L. B. Holm-Nielsen. 1994. The Alismataceae. Fl. Neotrop. Monogr. 64:39. |
| 1 | Native | Southern America | Western South America | Peru | | n.w. | Brako, L. & J. L. Zarucchi. 1993. Catalogue of the flowering plants and gymnosperms of Peru. Monogr. Syst. Bot. Missouri Bot. Gard. 45 |
| 2 | Cultivated | | | | | also cult. | |