This name is a synonym of Centaurea pseudoscabiosa subsp. ossethica (Sosn.) Gabrieljan.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record A9E7621A-C14B-42B2-9A4B-94F64177A7B7) with original publication details: 46 1995.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:984508-1.
This name was in version 1 of The Plant List, record gcc-97921, and has not been changed.