This name is a synonym of Rhodiola sinuata (Royle ex Edgew.) S.H. Fu.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 8903765) with original publication details: Trans. Linn. Soc. London 20(1): 47–48 1846.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:276072-1.
This name was in version 1 of The Plant List, record tro-8903765, and has not been changed.