This name is a synonym of Rhodiola dumulosa f. farreri (W.W. Sm.) Jacobsen.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 8903517) with original publication details: Notes Roy. Bot. Gard. Edinburgh 9(42): 125 1916.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:275397-1.
This name was in version 1 of The Plant List, record tro-8903517, and has not been changed.