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 338ED138-4F2B-4680-B27B-D28D353B1F37) with original publication details: 26 1874.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:189882-1.
This name was in version 1 of The Plant List, record gcc-125218.