This name is a synonym of Centaurea rhizantha C.A.Mey..
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record EF209ABE-0274-4873-8A2F-50C1E17335F9) with original publication details: 288 1949.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:190604-1.
This name was in version 1 of The Plant List, record gcc-43562, and has not been changed.