TX: Natural SubRegions (TPWD) (0)
| Balcones Canyonlands |
| Blackland Prairie |
| Bordas Escarpment |
| Brush Country |
| Canadian Breaks |
| Coastal Sand Plains |
| Desert Grassland |
| Desert Scrub |
| Dunes/Barrier |
| Eastern Cross Timbers |
| Escarpment Breaks |
| Estuarine Zone |
| Grand Prairie |
| High Plains |
| Lampasas Cut Plain |
| Live Oak-Mesquite Savanna |
| Llano Uplift |
| Longleaf Pine Forest |
| Marine Environment |
| Mesquite Plains |
| Mixed Pine-Hardwood Forest |
| Mountain Ranges |
| Oak Woodlands |
| Salt Basin |
| Sand Hills |
| Stockton Plateau |
| Subtropical Zone |
| Upland Prairies & Woods |
| Western Cross Timbers |
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