This name is a synonym of Dactylorhiza viridis (L.) R.M.Bateman, Pridgeon & M.W.Chase.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50192807) with original publication details: Lindleyana 12(3): 129 1997.
This name record (from Tropicos) was not included in version 1 of The Plant List. It is possible the same name was included from a different data source, to check this you can search for Dactylorhiza viride in version 1 of The Plant List.