This name is a synonym of Rhaponticum longifolium subsp. ericeticola (Font Quer) Greuter.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 1B3436FE-E15C-4432-84CA-6AF64A2192CF) with original publication details: 62 1930.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:190453-1.
This name was in version 1 of The Plant List, record gcc-79225, and has not been changed.