| Onagraceae | |
Ludwigia alternifolia var. alternifolia
| | | |
| Onagraceae | |
Ludwigia alternifolia var. linearifolia
| Britton | Bull. Torrey Bot. Club 17(12): 315 | 1890 |
| Onagraceae | |
Ludwigia alternifolia var. pubescens
| E.J. Palmer & Steyerm. | Ann. Missouri Bot. Gard. 25(3): 772 | 1938 |
| Onagraceae | ** |
Ludwigia alternifolia var. typica
| Munz | Bull. Torrey Bot. Club 71(2): 158 | 1944 |