This name is a synonym of Rhaponticum insigne (Boiss.) Wagenitz.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 6700C669-142E-43CD-8DAE-90CE02AF6719) with original publication details: Hortus Boiss.: 181 (1896) 181 1896.
This name was in version 1 of The Plant List, record gcc-96100, and has not been changed.