| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Asteraceae | Sclerocarpus uniserialis var. austrotexanus | South Texas Bonebract | Dunes. | Endemic to the South Texas Sand Sheet. | |
| Asteraceae | Sclerocarpus uniserialis var. uniserialis | Texas Bonebract | Calcareous or sandy-calcareous soils. | Endemic to se. TX. Other varieties occur in Mexico, and Central America. |  |