| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Onagraceae | Ludwigia linearis var. linearis | Eastern Narrowleaf Seedbox | Pine savannas, swamps, marshes. | Var. linearis ranges from s. New Jersey south to c. peninsular Florida, west to se. Louisiana, extending inland to the Cumberland Plateau of nc. Alabama and c. Tennessee. |  (c) Arendell, Adam |
| Onagraceae | Ludwigia linearis var. puberula | Western Narrowleaf Seedbox | Pine savannas, prairies, interdunal swales, ditches. | Var. puberula ranges primarily from c. Alabama west to c. Arkansas and e. Missouri, south to e. Texas, with intergradational material extending as far north and east as n. Florida and e. North Carolina. |  (c) Hill, Sonnia |