This name is a synonym of Centaurea atacamensis (Reiche) I.M.Johnst..
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record E1A37E2C-2D4B-4D33-8D73-51A3CE2B0EAC) with original publication details: Anales Univ. Chile 114 468 1904.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:51286-2.
This name was in version 1 of The Plant List, record gcc-44085, and has not been changed.