Appalachian Twayblade orchid (Neottia smallii)

Neottia smallii is accepted species in  the family Orchidaceae  subfamily: Epidendroideae, tribe: Neottieae,  
Genus Neottia 
Infraspecific taxa recognized within Neottia smallii: infraspecific taxa
This species is found in E. U.S.A. (Appalachian Mts.).