This name is a synonym of Rumex obtusifolius subsp. transiens (Simonk.) Rech.f..
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Math. Term. Közlem. 16: 119 1881.
This name was in version 1 of The Plant List, record kew-2869568, and has not been changed.