Photographed in Fletcher Park, 23 September 2012 and 4 September 2013. The Wildflowers of the Carolinas, page 382, shows a flower that looks this listed as Bearded Beggartick [Bidens aristosa], a member of the Aster (Asteraceae) family. It makes an orange or orange-yellow dye.
USDA Plants Listing: Bidens aristosa
Bearded Beggartick at Fletcher Park – 23 September 2012
Bearded Beggartick (more) – 23 September 2012
Bearded Beggartick – 4 September 2013
