| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Poaceae | Panicum amarum var. amarulum | Southern Seabeach Grass | Coastal dunes and shores, sand-flats, and longleaf pine sandhills (by introduction). | NJ s. to FL, west to se. and s. TX and ne. Mexico (TAM); Mexico (Yucatan: CAM, ROO, YUC); West Indies; restricted to the Coastal Plain except for WV (where apparently introduced). Primarily a coastal plant, P. amarum var. amarulum has unfortunately been planted extensively in the Fall-line Sandhills of NC. |  |
| Poaceae | Panicum amarum var. amarum | Bitter Seabeach Grass | Coastal dunes and shores. | RI and CT south to FL, west to se. and e. TX, south to the Caribbean coast of Mexico and Belize, restricted to the coast. |  |