This name is a synonym of Rheum tanguticum Maxim. ex Balf..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50095421) with original publication details: Acta Bot. Boreal.-Occid. Sin. 12(4): 311–312 1992.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:969958-1.
This name was in version 1 of The Plant List, record tro-50095421.