| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Asteraceae | Melanthera angustifolia | Prairie Black-anthers | Marl prairies, wet pine rocklands. | S. FL; West Indies; s. Mexico (CAM, CHP, ROO, TAB, VER, YUC) and Central America. |  |
| Asteraceae | Melanthera nivea | Snowy Black-anthers, Snow Squarestem | Calcareous outcrops, sandy woodlands. | E. SC south to s. FL, west to LA; also widespread in the West Indies, Mexico, Central America, and northern South America (Colombia, Ecuador, Peru, and Venezuela). |  |
| Asteraceae | Melanthera parvifolia | Pineland Black-anthers | Drier pine rocklands. | Endemic to s. peninsular FL. |  |