This name is a synonym of Centaurea appendicata Klokov.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 1B267779-3E5A-4E57-908B-E518E140702C) 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:876882-1.
This name was in version 1 of The Plant List, record gcc-69269, and has not been changed.