This name is a synonym of Dactylorhiza majalis subsp. sphagnicola (Höppner) H.A.Pedersen & Hedrén.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 239163) with original publication details: Ber. Arbeitskreis. Heimische Orchid. 18(2): 98 2001 publ. 2002.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:20005194-1.
This name was in version 1 of The Plant List, record kew-239163, and has not been changed.