Canada Milkvetch, a native species, has been added to the USWildflowers database (6/26/2014.)  Scientific name is Astragalus canadensis. Photo below was taken in Dade County, GA on June 21, 2014. Go to the Canada Milkvetch detail page for more photos and information.

Canada Milkvetch – Astragalus canadensis

The genus Astragalus is also called Milk Vetch.