Central Great Plains, Chihuahuan Deserts, Cross Timbers, East Central Texas Plains, Edwards Plateau, Gulf Coast Prairies and Marshes, High Plains, Southwestern Tablelands, Texas Blackland Prairies, Western Gulf Coastal Plain
Broken Red Plains, Limestone Plains
Chihuahuan Desert Grasslands, Chihuahuan Montane Woodlands, Low Mountains and Bajadas
Carbonate Cross Timbers, Eastern Cross Timbers, Grand Prairie, Limestone Cut Plain, Western Cross Timbers
Bastrop Lost Pines, Floodplains and Low Terraces2, Northern Post Oak Savanna, San Antonio Prairie, Southern Post Oak Savanna
Balcones Canyonlands, Edwards Plateau Woodland, Llano Uplift
Coastal Sand Plain, Floodplains and Low Terraces4, Laguna Madre Barrier Island and Coastal Marshes, Mid-Coast Barrier Islands and Coastal Marshes, Northern Humid Gulf Coastal Prairies, Southern Subhumid Gulf Coastal Prairies, Texas-Louisiana Coastal Marshes
Canadian/Cimarron High Plains, Llano Estacado, Rolling Sand Plains
Canadian/Cimarron Breaks, Caprock Canyons Badlands Breaks, Semiarid Canadian Breaks
Floodplains and Low Terraces1, Northern Blackland Prairie, Southern Blackland Prairie
Flatwoods, Floodplains and Low Terraces3, Southern Tertiary Uplands, Tertiary Uplands