| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Acanthaceae | Carlowrightia parviflora | Small-flower Carlowrightia | Chaparral, thornscrub, roadsides, in gravelly or sandy loam soils. | S. TX south into c. Mexico. |  |
| Acanthaceae | Carlowrightia texana | Texas Carlowrightia | Mesquite woodlands, arroyos, dry grasslands, roadsides. | Nc. TX, s. NM, and s. AZ south to n. Mexico. |  |
| Acanthaceae | Carlowrightia torreyana | Torrey's Carlowrightia | Rocky slopes and chaparral. |