Mountain Phlox or Wideflower Phlox [Phlox latifolia] found at NC Arboretum on 2 July 2013. It’s a member of the Phlox (Polemoniaceae) family. Newcomb’s Wildflower Guide, pages 248-249, states that it blooms in woods in spring and early summer. It also lists it under the synonym of Phlox ovata. USDA Plants Listing: Phlox latifolia