This name is a synonym of Dactylorhiza sambucina (L.) Soó.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 342566) with original publication details: Nom. Nov. Gen. Dactylorhiza 3 1962.
This name was in version 1 of The Plant List, record kew-342566.