Whorled Wood Aster, a native species, has been added to the USWildflowers database (11/02/2013.) Scientific name is Centrosema virginianum. Also known as Whorled Aster, Mountain Aster, and Sharp-leaved Aster. Photo below was taken near the Clingman’s Dome access road in the Great Smoky Mountains National Park in Swain County, NC on Sep 23, 2013. Go to the Whorled Wood Aster detail page for more photos and information.