| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Asteraceae | Helianthus debilis ssp. cucumerifolius | Cucumber-leaf Sunflower | Sandy soils of fields and roadsides. | Native from sw. GA and FL west to c. TX. |  |
| Asteraceae | Helianthus debilis ssp. debilis | East Florida Beach Sunflower | Sandy beaches and dunes. | East side of the FL peninsula from St. Johns County south to Monroe County, FL. Disjunct (probably adventive), at Pawleys Island, Georgetown County, SC. |  |
| Asteraceae | Helianthus debilis ssp. silvestris | Longleaf pine woodlands, other dry woodlands. | Endemic to e. TX. |  | |
| Asteraceae | Helianthus debilis ssp. tardiflorus | Gulf Coast Beach Sunflower | Sandy beaches, dry pinelands. | GA, FL, AL, and MS. |  |
| Asteraceae | Helianthus debilis ssp. vestitus | West Florida Beach Sunflower | Coastal dunes. | W. coast of peninsular FL, Hernando County south to Lee County. |