This name is a synonym of Centaurea aspera subsp. gentilii (Braun-Blanq. & Maire) Dobignard.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 2696BD0D-C483-413E-BD32-3312AFDBA1E3) with original publication details: 188 1922.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:190553-1.
This name was in version 1 of The Plant List, record gcc-27630.