Central Great Plains, Chihuahuan Deserts, Cross Timbers, East Central Texas Plains, Edwards Plateau, Gulf Coast Prairies and Marshes, Southwestern Tablelands, Texas Blackland Prairies, Western Gulf Coastal Plain
Broken Red Plains, Limestone Plains
Chihuahuan Basins and Playas, Chihuahuan Desert Grasslands, Chihuahuan Montane Woodlands, Low Mountains and Bajadas
Eastern Cross Timbers
Bastrop Lost Pines, Floodplains and Low Terraces2, San Antonio Prairie, Southern Post Oak Savanna