Pink Lady’s Slipper or Moccasin Flower [Cypripedium acaule] found in the backyard at 106 Troy Hill Circle on 9 May 2013. It’s a member of the Orchid (Orchidaceae) family. Newcomb’s Wildflower Guide, pages 22-23, says it’s found in “dry or moist woods, usually under oaks or pines” (it’s under pines). Wildflowers of the Carolinas, pages 92-93, states that bees come in through the slits at the side of the flower and go out through the two escape holes to pollinate other orchids.
USDA Plants Listing: Cypripedium acaule