Hairy Tickseed, a native species, has been added to the USWildflowers database (12/01/2013.) Scientific name is Coreopsis pubescens.  Photo below was taken at the Lula Lake core property, Walker County, GA, on Aug 3, 2013.  Go to the Hairy Tickseed detail page for more photos and information.

Hairy Coreopsis, Hairy Tickseed – Coreopsis pubescens