| 1 | Native | Northern America | North-Central U.S.A. | United States | Illinois | s. | Britton, N. L. et al., eds. ser. 1; C. T. Rogerson, ed. ser. 2. 1905-1972. North American flora Note: ser. 1, 1905-1957; ser. 2, 1954-1972 |
| 1 | Native | Northern America | North-Central U.S.A. | United States | Missouri | s. | Britton, N. L. et al., eds. ser. 1; C. T. Rogerson, ed. ser. 2. 1905-1972. North American flora Note: ser. 1, 1905-1957; ser. 2, 1954-1972 |
| 1 | Native | Northern America | North-Central U.S.A. | United States | Oklahoma | e. | Britton, N. L. et al., eds. ser. 1; C. T. Rogerson, ed. ser. 2. 1905-1972. North American flora Note: ser. 1, 1905-1957; ser. 2, 1954-1972 |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Ohio | s.w. | Britton, N. L. et al., eds. ser. 1; C. T. Rogerson, ed. ser. 2. 1905-1972. North American flora Note: ser. 1, 1905-1957; ser. 2, 1954-1972 |
| 1 | Native | Northern America | South-Central U.S.A. | United States | Texas | | Britton, N. L. et al., eds. ser. 1; C. T. Rogerson, ed. ser. 2. 1905-1972. North American flora Note: ser. 1, 1905-1957; ser. 2, 1954-1972 |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Alabama | | Britton, N. L. et al., eds. ser. 1; C. T. Rogerson, ed. ser. 2. 1905-1972. North American flora Note: ser. 1, 1905-1957; ser. 2, 1954-1972 |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Arkansas | | Britton, N. L. et al., eds. ser. 1; C. T. Rogerson, ed. ser. 2. 1905-1972. North American flora Note: ser. 1, 1905-1957; ser. 2, 1954-1972 |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Florida | http://www.plantatlas.usf.edu/main.asp?plantID=3228 | Britton, N. L. et al., eds. ser. 1; C. T. Rogerson, ed. ser. 2. 1905-1972. North American flora Note: ser. 1, 1905-1957; ser. 2, 1954-1972 |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Georgia | | Britton, N. L. et al., eds. ser. 1; C. T. Rogerson, ed. ser. 2. 1905-1972. North American flora Note: ser. 1, 1905-1957; ser. 2, 1954-1972 |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Kentucky | | Britton, N. L. et al., eds. ser. 1; C. T. Rogerson, ed. ser. 2. 1905-1972. North American flora Note: ser. 1, 1905-1957; ser. 2, 1954-1972 |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Louisiana | | Britton, N. L. et al., eds. ser. 1; C. T. Rogerson, ed. ser. 2. 1905-1972. North American flora Note: ser. 1, 1905-1957; ser. 2, 1954-1972 |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Maryland | | Britton, N. L. et al., eds. ser. 1; C. T. Rogerson, ed. ser. 2. 1905-1972. North American flora Note: ser. 1, 1905-1957; ser. 2, 1954-1972 |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Mississippi | | Britton, N. L. et al., eds. ser. 1; C. T. Rogerson, ed. ser. 2. 1905-1972. North American flora Note: ser. 1, 1905-1957; ser. 2, 1954-1972 |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | North Carolina | | Britton, N. L. et al., eds. ser. 1; C. T. Rogerson, ed. ser. 2. 1905-1972. North American flora Note: ser. 1, 1905-1957; ser. 2, 1954-1972 |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | South Carolina | | Britton, N. L. et al., eds. ser. 1; C. T. Rogerson, ed. ser. 2. 1905-1972. North American flora Note: ser. 1, 1905-1957; ser. 2, 1954-1972 |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Tennessee | | Britton, N. L. et al., eds. ser. 1; C. T. Rogerson, ed. ser. 2. 1905-1972. North American flora Note: ser. 1, 1905-1957; ser. 2, 1954-1972 |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Virginia | | Britton, N. L. et al., eds. ser. 1; C. T. Rogerson, ed. ser. 2. 1905-1972. North American flora Note: ser. 1, 1905-1957; ser. 2, 1954-1972 |
| 1 | Native | Northern America | Southern Mexico | Mexico | Chiapas | | Ramamoorthy, T. P. & E. M. Zardini. 1987. The systematics and evolution of Ludwigia sect. Myrtocarpus sensu lato (Onagraceae). Monogr. Syst. Bot. Missouri Bot. Gard. 19:88-96. |
| 1 | Native | Northern America | Southern Mexico | Mexico | Tabasco | | Ramamoorthy, T. P. & E. M. Zardini. 1987. The systematics and evolution of Ludwigia sect. Myrtocarpus sensu lato (Onagraceae). Monogr. Syst. Bot. Missouri Bot. Gard. 19:88-96. |
| 1 | Native | Northern America | Southern Mexico | Mexico | Veracruz de Ignacio de la Llave | | Ramamoorthy, T. P. & E. M. Zardini. 1987. The systematics and evolution of Ludwigia sect. Myrtocarpus sensu lato (Onagraceae). Monogr. Syst. Bot. Missouri Bot. Gard. 19:88-96. |
| 1 | Native | Southern America | Brazil | Brazil | | | Ramamoorthy, T. P. & E. M. Zardini. 1987. The systematics and evolution of Ludwigia sect. Myrtocarpus sensu lato (Onagraceae). Monogr. Syst. Bot. Missouri Bot. Gard. 19:88-96. |
| 1 | Native | Southern America | Caribbean | Cuba | | | Ramamoorthy, T. P. & E. M. Zardini. 1987. The systematics and evolution of Ludwigia sect. Myrtocarpus sensu lato (Onagraceae). Monogr. Syst. Bot. Missouri Bot. Gard. 19:88-96. |
| 1 | Native | Southern America | Caribbean | St. Vincent and Grenadines | Saint Vincent | | Ramamoorthy, T. P. & E. M. Zardini. 1987. The systematics and evolution of Ludwigia sect. Myrtocarpus sensu lato (Onagraceae). Monogr. Syst. Bot. Missouri Bot. Gard. 19:88-96. |
| 1 | Native | Southern America | Caribbean | Trinidad and Tobago | Trinidad | | Ramamoorthy, T. P. & E. M. Zardini. 1987. The systematics and evolution of Ludwigia sect. Myrtocarpus sensu lato (Onagraceae). Monogr. Syst. Bot. Missouri Bot. Gard. 19:88-96. |
| 1 | Native | Southern America | Caribbean | United States | Puerto Rico | | Ramamoorthy, T. P. & E. M. Zardini. 1987. The systematics and evolution of Ludwigia sect. Myrtocarpus sensu lato (Onagraceae). Monogr. Syst. Bot. Missouri Bot. Gard. 19:88-96. |
| 1 | Native | Southern America | Central America | Costa Rica | | | Ramamoorthy, T. P. & E. M. Zardini. 1987. The systematics and evolution of Ludwigia sect. Myrtocarpus sensu lato (Onagraceae). Monogr. Syst. Bot. Missouri Bot. Gard. 19:88-96. |
| 1 | Native | Southern America | Central America | El Salvador | | | Ramamoorthy, T. P. & E. M. Zardini. 1987. The systematics and evolution of Ludwigia sect. Myrtocarpus sensu lato (Onagraceae). Monogr. Syst. Bot. Missouri Bot. Gard. 19:88-96. |
| 1 | Native | Southern America | Central America | Guatemala | | | Ramamoorthy, T. P. & E. M. Zardini. 1987. The systematics and evolution of Ludwigia sect. Myrtocarpus sensu lato (Onagraceae). Monogr. Syst. Bot. Missouri Bot. Gard. 19:88-96. |
| 1 | Native | Southern America | Central America | Honduras | | | Ramamoorthy, T. P. & E. M. Zardini. 1987. The systematics and evolution of Ludwigia sect. Myrtocarpus sensu lato (Onagraceae). Monogr. Syst. Bot. Missouri Bot. Gard. 19:88-96. |
| 1 | Native | Southern America | Central America | Nicaragua | | | Ramamoorthy, T. P. & E. M. Zardini. 1987. The systematics and evolution of Ludwigia sect. Myrtocarpus sensu lato (Onagraceae). Monogr. Syst. Bot. Missouri Bot. Gard. 19:88-96. |
| 1 | Native | Southern America | Central America | Panama | | | Ramamoorthy, T. P. & E. M. Zardini. 1987. The systematics and evolution of Ludwigia sect. Myrtocarpus sensu lato (Onagraceae). Monogr. Syst. Bot. Missouri Bot. Gard. 19:88-96. |
| 1 | Native | Southern America | Northern South America | French Guiana | | | Görts-van Rijn, A. R. A., ed. 1986-. Flora of the Guianas. |
| 1 | Native | Southern America | Northern South America | Guyana | | | Görts-van Rijn, A. R. A., ed. 1986-. Flora of the Guianas. |
| 1 | Native | Southern America | Northern South America | Suriname | | | Görts-van Rijn, A. R. A., ed. 1986-. Flora of the Guianas. |
| 1 | Native | Southern America | Northern South America | Venezuela | | | Ramamoorthy, T. P. & E. M. Zardini. 1987. The systematics and evolution of Ludwigia sect. Myrtocarpus sensu lato (Onagraceae). Monogr. Syst. Bot. Missouri Bot. Gard. 19:88-96. |
| 1 | Native | Southern America | Southern South America | Argentina | Chaco | | Ramamoorthy, T. P. & E. M. Zardini. 1987. The systematics and evolution of Ludwigia sect. Myrtocarpus sensu lato (Onagraceae). Monogr. Syst. Bot. Missouri Bot. Gard. 19:88-96. |
| 1 | Native | Southern America | Southern South America | Argentina | Corrientes | | Ramamoorthy, T. P. & E. M. Zardini. 1987. The systematics and evolution of Ludwigia sect. Myrtocarpus sensu lato (Onagraceae). Monogr. Syst. Bot. Missouri Bot. Gard. 19:88-96. |
| 1 | Native | Southern America | Southern South America | Argentina | Entre Ríos | | Ramamoorthy, T. P. & E. M. Zardini. 1987. The systematics and evolution of Ludwigia sect. Myrtocarpus sensu lato (Onagraceae). Monogr. Syst. Bot. Missouri Bot. Gard. 19:88-96. |
| 1 | Native | Southern America | Southern South America | Argentina | Formosa | | Ramamoorthy, T. P. & E. M. Zardini. 1987. The systematics and evolution of Ludwigia sect. Myrtocarpus sensu lato (Onagraceae). Monogr. Syst. Bot. Missouri Bot. Gard. 19:88-96. |
| 1 | Native | Southern America | Southern South America | Argentina | Jujuy | | Ramamoorthy, T. P. & E. M. Zardini. 1987. The systematics and evolution of Ludwigia sect. Myrtocarpus sensu lato (Onagraceae). Monogr. Syst. Bot. Missouri Bot. Gard. 19:88-96. |
| 1 | Native | Southern America | Southern South America | Argentina | Misiones | | Ramamoorthy, T. P. & E. M. Zardini. 1987. The systematics and evolution of Ludwigia sect. Myrtocarpus sensu lato (Onagraceae). Monogr. Syst. Bot. Missouri Bot. Gard. 19:88-96. |
| 1 | Native | Southern America | Southern South America | Paraguay | | | Ramamoorthy, T. P. & E. M. Zardini. 1987. The systematics and evolution of Ludwigia sect. Myrtocarpus sensu lato (Onagraceae). Monogr. Syst. Bot. Missouri Bot. Gard. 19:88-96. |
| 1 | Native | Southern America | Western South America | Bolivia | | | Ramamoorthy, T. P. & E. M. Zardini. 1987. The systematics and evolution of Ludwigia sect. Myrtocarpus sensu lato (Onagraceae). Monogr. Syst. Bot. Missouri Bot. Gard. 19:88-96. |
| 1 | Native | Southern America | Western South America | Colombia | | | Ramamoorthy, T. P. & E. M. Zardini. 1987. The systematics and evolution of Ludwigia sect. Myrtocarpus sensu lato (Onagraceae). Monogr. Syst. Bot. Missouri Bot. Gard. 19:88-96. |
| 1 | Native | Southern America | Western South America | Ecuador | | | Ramamoorthy, T. P. & E. M. Zardini. 1987. The systematics and evolution of Ludwigia sect. Myrtocarpus sensu lato (Onagraceae). Monogr. Syst. Bot. Missouri Bot. Gard. 19:88-96. |
| 1 | Native | Southern America | Western South America | Peru | | | Brako, L. & J. L. Zarucchi. 1993. Catalogue of the flowering plants and gymnosperms of Peru. Monogr. Syst. Bot. Missouri Bot. Gard. 45 |
| 4 | Naturalized | Africa | West Tropical Africa | Gambia | | | Keay, R. W. J. & F. N. Hepper. 1953-1972. Flora of west tropical Africa, ed. 2. |
| 4 | Naturalized | Africa | West Tropical Africa | Nigeria | | | Keay, R. W. J. & F. N. Hepper. 1953-1972. Flora of west tropical Africa, ed. 2. |
| 4 | Naturalized | Asia-Temperate | Eastern Asia | Japan | | | Ramamoorthy, T. P. & E. M. Zardini. 1987. The systematics and evolution of Ludwigia sect. Myrtocarpus sensu lato (Onagraceae). Monogr. Syst. Bot. Missouri Bot. Gard. 19:88-96. |
| 4 | Naturalized | Asia-Tropical | Malesia | Philippines | | | Ramamoorthy, T. P. & E. M. Zardini. 1987. The systematics and evolution of Ludwigia sect. Myrtocarpus sensu lato (Onagraceae). Monogr. Syst. Bot. Missouri Bot. Gard. 19:88-96. |
| 4 | Naturalized | Europe | Southwestern Europe | France | | | Ramamoorthy, T. P. & E. M. Zardini. 1987. The systematics and evolution of Ludwigia sect. Myrtocarpus sensu lato (Onagraceae). Monogr. Syst. Bot. Missouri Bot. Gard. 19:88-96. |