This name is a synonym of Rumex pulcher subsp. woodsii (De Not.) Arcang..
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Index Seminum (RO) 1875: 28 1875.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:697634-1.
This name was in version 1 of The Plant List, record kew-2424397, and has not been changed.