This name is a synonym of Centaurea margarita-alba Klokov.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 2E47EA05-D95D-422E-9CD1-19EE0EBA101C) with original publication details: 204 1976.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:876888-1.
This name was in version 1 of The Plant List, record gcc-13967, and has not been changed.