This name is a synonym of Dactylorhiza insularis (Sommier ex Martelli) E. Nelson.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50013628) with original publication details: Die Orchidee 20: 128 1969.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:626623-1.
This name was in version 1 of The Plant List, record tro-50013628.