This name is a synonym of Carex bigelowii subsp. dacica (Heuff.) T.V.Egorova.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 224955) with original publication details: Folia Geobot. Phytotax. 3(2): 190 1968.
This name was in version 1 of The Plant List, record kew-224955.