This name is a synonym of Rhodiola humilis (Hook. f. & Thomson) S.H. Fu.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 8903737) with original publication details: J. Proc. Linn. Soc., Bot. 2: 99 1858.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:275536-1.
This name was in version 1 of The Plant List, record tro-8903737, and has not been changed.