Crimson Clover, a non-native species, has been added to the USWildflowers database (10/03/2010.)  Scientific name is Trifolium incarnatum.  It’s also known by the common name Italian Clover.  Photo below was taken on the east side of Pigeon Mountain in Walker County, Georgia on April 18, 2010.

Crimson Clover, Italian Clover - Trifolium incarnatum