This name is a synonym of Carex accrescens Ohwi.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 229441) with original publication details: Sosud. Rast. Sovet. Dal'nego Vostoka 3: 381 1988.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:950502-1.
This name was in version 1 of The Plant List, record kew-229441, and has not been changed.