| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Onagraceae | Ludwigia peploides var. glabrescens | Floating Primrose-willow | Pools, ditches, disturbed places. | PA, VA and NC south and west to FL and AZ; Mexico; Venezuela. Doubtfully native in the eastern parts of our area. |  |
| Onagraceae | Ludwigia peploides var. montevidensis | Marshes. | Native of South America. | ||
| Onagraceae | Ludwigia peploides var. peploides | Canals, ditches, sluggish waters. | TX, NM, AZ, and CA south to Mexico, Central America, South America; West Indies. |  |