This name is a synonym of Rhodiola heterodonta (Hook. f. & Thomson) Boriss..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 8903200) with original publication details: J. Proc. Linn. Soc., Bot. 2: 95 1858.
This name was in version 1 of The Plant List, record tro-8903200.