Shrub Yellowroot or Yellowroot [Xanthorhiza simplicissima] photos were taken at the Pisgah Center for Wildlife Education,Pisgah Forest, NC on 16 April 2016. It’s the member of the Buttercup (Ranunculaceae) family, “the only species in the genus.” Timothy P. Spira’s Wildflowers & Plant Communities of the Southern Appalachian Mountains & Piedmont, pages 322-323, states that the …