This name is a synonym of Dactylorhiza foliosa (Rchb.f.) Soó.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 55341) with original publication details: Europ. Medit. Orchid. 45 1975.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:887397-1.
This name was in version 1 of The Plant List, record kew-55341, and has not been changed.