Nope,the "Cross Timbers" is one of the ecological regions of Texas.I know that the term is also used to describe a much larger area extending into other states,but I use it as a clearly defined geographic area in Texas.To this day ,the Post Oak pastures have little blue stem[a tall grass] and the mesquite pastures have buffalo grass or mesquite grass.
The stirrup high grass was in the Rolling Plains,just West of the Cross Timbers , and up on the Caprock.
I have all those grasses on my property. The Tallgrass is to the east. The Shortgrass is to the west. Again, I'm guessing and don't know exactly what the Cross Timbers is as far as short vs. tall, but it's probably a pretty good demarcation between the two prairies.
http://en.wikipedia.org/wiki/Shortgrass_prairiehttp://www.radford.edu/~swoodwar/CLASSES/GEOG235/biomes/tempgrass/prairie.html
I don't think that map is totally accurate, but as you can see, the Caprock is clearly in the short-grass region.
