| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Asteraceae | Gaillardia aestivalis var. 1 | Grasslands and open woodlands, on sandy soils. | KS south through w. AR and OK to c. TX. | ||
| Asteraceae | Gaillardia aestivalis var. aestivalis | Sandhill Gaillardia, Prairie Gaillardia | Longleaf pine sandhills (especially in flats or dips with loamy soils), prairies, adjacent disturbed areas. | Sc. NC south to c. peninsular FL, west to KS and e. and se. TX. |  (c) Campos, Aidan |
| Asteraceae | Gaillardia aestivalis var. austrotexana | South Texas Gaillardia | Sandy areas. | C. TX south to se. and s. TX south to TAM. | |
| Asteraceae | Gaillardia aestivalis var. flavovirens | Yellow Sandhill Gaillardia, Yellow Prairie Gaillardia | Longleaf pine sandhills, sandy prairies. | Panhandle FL west to s. MO and se. TX. |  (c) Hill, Sonnia |
| Asteraceae | Gaillardia aestivalis var. winkleri | Pineywoods Gaillardia | Longleaf pine sandhills, especially in opening or clearings. | Endemic to e. TX (notably or only Hardin, Newton, and Tyler counties). |  (c) Hill, Sonnia |