American Plum, a native species, has been added to the USWildflowers database (03/20/2012.) Scientific name is Prunus americana.  Photo below was taken along Rocky Lane on Pigeon Mountain, Walker County, GA, on April 2, 2011.   It  is also known by the common name Wild Plum.  Go to the American Plum detail page for more photos and information.

American Plum, Wild Plum - Prunus americana