This name is a synonym of Centaurea toletana var. tendudaica Rivas Goday.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record A818D94B-589F-410C-8FD5-0DD5DC46805C) with original publication details: Fontqueria 1 1 1982.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:951859-1.
This name was in version 1 of The Plant List, record gcc-7442.