This name is a synonym of Dactylorhiza × braunii (Halácsy) Borsos & Soó.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 142293) with original publication details: Oesterr. Bot. Z. 31: 137 1881.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:648422-1.
This name was in version 1 of The Plant List, record kew-142293, and has not been changed.