This name is a synonym of Centaurea transcaucasica subsp. georgica (Klokov) Mikheev.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record A845AB84-1D09-40C9-87E6-ED1CCE4F4FE1) with original publication details: 619 1963.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:190557-1.
This name was in version 1 of The Plant List, record gcc-136821, and has not been changed.