The Genus Corallorhiza
2. Merten's Coral Root Orchid: Corallorhiza mertensiana - The flowers are reddish-purple and lack longitudinal striping. The flowers are a dull purple or pink color. The spur is prominent.
3. Striped Coral Root: Corallorhiza striata - The flowers are flesh-colored with prominent purplish to reddish-brown striping. The spur is missing.
4. Northern Coral Root: Corallorhiza trifida - The lower lip is whitish and usually not red-spotted. The stems are yellowish. The spur if present is attached to the top of the ovary.