This name is a synonym of Centaurea sphaerocephala subsp. lusitanica (Boiss. & Reut.) Nyman.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record A9D37FF2-C8A3-4A83-B680-FFBA2D32DCB6) with original publication details: 85 1856.
This name was in version 1 of The Plant List, record gcc-145130, and has not been changed.