| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Alismataceae | Sagittaria lancifolia var. lancifolia | Bulltongue Arrowhead | Marshes, swamps. | E. SC south to s. FL, west to FL Panhandle; West Indies; n. South America. Reports further west in the Gulf Coastal Plain (MS and LA) are unverified. |  |
| Alismataceae | Sagittaria lancifolia var. media | Scimitar Arrowhead | Freshwater to brackish (mesohaline) tidal marshes. | S. DE south to ne. FL, FL Panhandle, west to TX; scattered in Central America and n. South America. |  |