| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Acanthaceae | Carlowrightia parviflora | Small-flower Carlowrightia | Chaparral, thornscrub, roadsides, in gravelly or sandy loam soils. | S. Texas south into c. Mexico. |  (c) Díaz, José Belem Hernández - CC-BY |
| Acanthaceae | Carlowrightia texana | Texas Carlowrightia | Mesquite woodlands, arroyos, dry grasslands, roadsides. | Nc. Texas, s. New Mexico, and s. Arizona south to n. Mexico. The single Miami-Dade County, Florida waif occurrence is curious. See annotation by Daniel on Sauleda 8986 (USF # 191397). |  (c) Wong, Michelle - CC-BY |
| Acanthaceae | Carlowrightia torreyana | Torrey's Carlowrightia | Rocky slopes and chaparral. |