This name is a synonym of Centaurea boissieri subsp. willkommii (Sch.Bip.) Dostál.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 007D04B2-67FA-4A85-B6A1-F7AA3A0408B8) with original publication details: 468 1929.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:189985-1.
This name was in version 1 of The Plant List, record gcc-141557.