Yellowwood, Cladrastris kentukea
As you can tell from the name, this is a mid-southern tree. It actually has a scattered native distribution, probably because it used to be more widely distributed in the past. This tree is in the pea family and it has beautiful fragrant white flowers that are attractive to insects. The leaves turn yellowish orange in the fall. This great tree isn't often planted in yards, perhaps because the branches are a little weak and tend to break. It's a great tree for a prominent area along the trail.