This name is a synonym of Centaurea resupinata subsp. lagascae (Nyman) Fern.Casas & Susanna.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 6A273052-ADE0-491F-940F-C3934CEB375D) with original publication details: 161 1982.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:920623-1.
This name was in version 1 of The Plant List, record gcc-65067.