Out here at some wood again, this time I've done some research on the leaves on the ground in the area. Thing is, it's wide open and there's all kinds of leaves in the area. But it seems to be slippery elm leaves, cottonwood leaves, post oak leaves, and pecan leaves. I got the pecan part sorted as well as the slippery elm wood. But this wood has me stumped. Is this post oak? Or another elm tree? Cottonwood?