I have an uncle who owns some hunting property. I've noticed a type of tree growing on his property that I'm not sure of the species. The bark looks like a young hickory, but has short sharp spines all over. There it quite a few of them and they seem to range from 2" to 6"diameter, And get about 20 to 30 feet high and straight with few limbs at the bottom.The property is in western Pennsylvania if that helps. I can't seem to find anything on the web about it. I thought about cutting some and trying to make a bow from it? Thnks for any help.