Corallorhiza species -- "Coral root orchids". At least 4 species in Yellowstone, shown below

These orchids are saprophytic, without chlorophyl to photosynthesize. They are usually found "in the dark with mosquitos" -- at least partial shade, and are sometimes hidden under other vegetation. My impression is that the western coral root is the most numerous in the park. See detail pages for Locations and approximate blooming times. These vary by species. 

  • _CFM1991
  • |
  • Coral root orchid, Corallorhiza mertensiana, near Indian Pond, Orchid, Yellowstone
  • |
  • 7/22/14 3:13:45 PM MDT
  • |
  • 4000 × 6016 (24.1 MP)
  • |
  • 30.46 MB
  • |
  • YNP > 14_0722
  • _CFM1524
  • |
  • Corallorhiza maculata, spotted coralroot, Storm point, Yellowstone
  • |
  • 6/25/14 9:51:57 AM MDT
  • |
  • 4000 × 6016 (24.1 MP)
  • |
  • 27.97 MB
  • |
  • YNP > 14_0625
  • _CFM1718
  • |
  • Corallorhiza striata, Mammoth area, orchid, Striped coralroot, Yellowstone
  • |
  • 6/27/14 1:10:20 PM MDT
  • |
  • 4000 × 6016 (24.1 MP)
  • |
  • 30.98 MB
  • |
  • YNP > 14_0627
  • _CFM1669 - Version 2
  • |
  • Corallorhiza trifida, early pale coralroot, orchid, Roosevelt area, Yellowstone
  • |
  • 6/26/14 5:53:34 PM MDT
  • |
  • 3131 × 4699 (14.7 MP)
  • |
  • 26.75 MB
  • |
  • YNP > 14_0626

Locations:  See detail pages

Blooming dates: See detail pages