I cut this one down the other day as any larger and it would pose a threat to the house in the storm. I've never quite figured out what it is, there are no flowers or nuts produced by it and we have a couple more on the property so I'd just like to know for curiosity sake. They grow in the rockier, drier part of the property, none are located close to the springs or water.
Cross section:
Trunk:
Branches:
Branch tips as best the phone would allow:
Cross section:
Trunk:
Branches:
Branch tips as best the phone would allow: