I stumbled on this maple tree on a steep wooded bank at a sandy limestone outcrop on the Cape Fear river, in SE North Carolina, just north of Wilmington (zone 8). I don't think it is a common tree around here, as I have never seen one before. After looking over my NC native Acer options, I settled on it maybe being an Acer floridanum, the southern sugar maple? Anyhow, it has fairly "stumpy" lobed leaves compared to most of photos that I could find of this species on the net. Sorry for the crappy cell phone pic. Ideas?