This name is a synonym of Centaurea leucophaea subsp. biformis (Timb.-Lagr.) Dostál.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 11165D1B-3EA8-47EE-A55B-91FDAF6019A5) with original publication details: 262 1892.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:190040-1.
This name was in version 1 of The Plant List, record gcc-96618, and has not been changed.