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 D3B8A672-D1AA-4EE2-B4C9-50EC9F4F9D69) with original publication details: Linnaea 17 40 1843.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:191165-1.
This name was in version 1 of The Plant List, record gcc-43670.