This name is a synonym of Centaurea limbata subsp. geresensis (Arènes) Franco.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record E7CFACCB-2299-4FEB-B3FC-1F210B9834BE) with original publication details: 199 1976.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:876796-1.
This name was in version 1 of The Plant List, record gcc-16851.