So you seen Cucumbers on it ??????????? Weird !!!It's not hickory, there are no hickory nuts on any of them in the fall. I think the cucumber tree is it
Bark looks pretty coarse but based on the leaves and flower, I agree. What does the wood look like? I've carved wood that was reportedly from a cucumber tree and it was kind of creamy white with very even grain - very similar to basswood. It was really nice to carve.That is a Cucumber Tree ( Magnolia acuminata )
It is a type of Non Evergree Magnolia Tree.
David