Well, it wasn't really elusive; I just didn't know where to look. Fred pointed out this very tree-like example in the riparian area above the dam. The size of the leaves can vary for both species of hackberry, but the leaf of the Net-leaf Hackberry(Celtis reticulata) feels like sandpaper. And how about that tie-dyed sky? That's your clue to its Family. Answer in tomorrow's post.