This name is a synonym of Dactylorhiza traunsteineri subsp. curvifolia (F.Nyl.) Soó.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 55611) with original publication details: Turczaninowia 3: 50 2000.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:1018456-1.
This name was in version 1 of The Plant List, record kew-55611.