This name is a synonym of Rhodiola semenovii (Regel & Herder) Boriss..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 8903777) with original publication details: Gard. Chron. 2: 267 1878.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:276043-1.
This name was in version 1 of The Plant List, record tro-8903777, and has not been changed.