Three-Parted Violet, a native species, has been added to the USWildflowers database (04/01/2012.) Scientific name is Viola tripartita.  Photo below was taken on Pigeon Mountain in Walker County, GA, on April 1, 2012. Go to the Three-Parted Violet detail page for more information.

Three-parted Yellow Violet, Threepart Violet, Wedge-leaf Yellow Violet – Viola tripartita