This name is a synonym of Dactylorhiza majalis (Rchb.) P.F.Hunt & Summerh..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 23513515) with original publication details: Arbeitskreis Heimische Orchideen 15: 444 1983.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:912353-1.
This name was in version 1 of The Plant List, record tro-23513515.