This name is a synonym of Rhaponticum australe (Gaudich.) Soják.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym and as an invalid name (record 1E32392E-B818-41DF-A0B4-5F99A964D70E) with original publication details: 575 1838.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:189969-1.
This name was in version 1 of The Plant List, record gcc-51559, and has not been changed.