This name is a synonym of Cephalanthera longifolia (L.) Fritsch.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 36663) with original publication details: Fl. Sicul. Syn. 2: 877 1844.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:622391-1.
This name was in version 1 of The Plant List, record kew-36663.