What a headache this one is!
I have a feeling this is a Prunus, after looking at many I agree with Dave. The red zig zag leaf stem, alternate leaves, bark and fruit seem to fit Carolina Laurelcherry, Prunus caroliniana which is listed for the area (Rosaceae).
http://www.friendsofstandrewba...
http://www.duke.edu/~cwcook/tr...
