I’m not certain about this one, but my best guess, from studying the Virginia Department of Forestry tree identification guide and doing further research on the Internet, is that it is a yellow birch (betula alleghaniensis). If I’ve learned anything from posting these findings it is that I need to take more pictures of leaf patterns, the leaves themselves (both sides), and the bark of the tree that the leaves are part of! Sigh ….
From what I’ve read, the birch is a pioneer species that rapidly colonizes disturbed land. That doesn’t fit my property at all, but I don’t have any other ideas of what the tree might be. I wish that I had looked at the bark of the tree – that would have settled the question for certain. This is the tree whose bark was used by the Iroquois, among others, to make canoes. I’ll take my books and camera and do some further investigation in November.