I spotted this bloom out in the wilds up by Dupyer Creek. I had never seen one before. When I got home and looked it up it turned out to be Lilium philadelphicum. But also known as Lilium andinum. Oh, or Lilium montanum. Wait, how about Lilium umbellatum?
And the common names are no better: Western Wood Lily, Prairie Lily, or Red Lily. Take your pick.