This name is a synonym of Dactylorhiza majalis subsp. traunsteinerioides (Pugsley) R.M.Bateman & Denholm.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 55493) with original publication details: Watsonia 14: 373 1983.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:922037-1.
This name was in version 1 of The Plant List, record kew-55493.