This name is a synonym of Centaurea rouyi subsp. suffrutescens Blanca.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record C4069958-1B80-4AFF-97F0-6CE9F4AE1937) with original publication details: 93 1988.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:954379-1.
This name was in version 1 of The Plant List, record gcc-54299, and has not been changed.