This name is a synonym of Rumex acetosella subsp. angiocarpus (Murb.) Murb..
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Acta Univ. Lund. 27(5): 46 1892.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:696875-1.
This name was in version 1 of The Plant List, record kew-2425583, and has not been changed.