Corallorhiza trifida "Early coral root" "Northern coralroot"
Locations: Roosevelt area, Lost Creek Falls trail, hiding under other vegetation.
Blooming: June 26, 2014 in Roosevelt area, about the time when the western coralroots are just starting to bloom and the fairy slipper orchids are starting to wilt.
Sniff test: no fragrance detected
I have seen this plant in the Wind River Range of Wyoming growing in the middle of a muddy trail where it miraculously had not been stepped on. I have only found one specimen in Yellowstone so far.