This name is a synonym of Centaurea seridis subsp. cruenta (Willd.) Dostál.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 02834543-F354-4B17-BE67-2DA267BE42EF) with original publication details: 929 1809.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:190287-1.
This name was in version 1 of The Plant List, record gcc-24707, and has not been changed.