I'll call it the hackberry family, but some of you out there may prefer to call it the cannabis family. Yup, hackberry trees are in the same family as the famous weed. If I ever stumble across a patch of the latter in the wilds, and am not shot, I'll include it here as an invasive species. Meanwhile, hover over the photo series with your cursor to control the images.
Netleaf Hackberry (Celtis reticulata)
If you want to know how this tree got its name, turn over one of the leaves.