This name is a synonym of Rhodiola calliantha (H. Ohba) H. Ohba.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50198764) with original publication details: J. Jap. Bot. 49: 325 1974.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:275186-1.
This name was in version 1 of The Plant List, record tro-50198764, and has not been changed.