This name is a synonym of Centaurea solstitialis subsp. erythracantha (Halácsy) Dostál.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record CB9C59BE-7EB7-4CBF-85D3-67E419786784) with original publication details: Oesterr. Bot. Z. 56 210 1906.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:190468-1.
This name was in version 1 of The Plant List, record gcc-77897, and has not been changed.