This name is a synonym of Dactylorhiza umbrosa (Kar. & Kir.) Nevski.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 55384) with original publication details: Novosti Sist. Vyssh. Rast. 6: 267 1969 publ. 1970.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:626631-1.
This name was in version 1 of The Plant List, record kew-55384.