This name is a synonym of Rumex pamiricus Rech. f..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50136084) with original publication details: Fl. URSS 5: 715 1936.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:697444-1.
This name was in version 1 of The Plant List, record tro-50136084, and has not been changed.