This name is a synonym of Carex middendorffii var. kirigaminensis (Ohwi) Ohwi.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 225405) with original publication details: Mem. Coll. Sci. Kyoto Imp. Univ., Ser. B, Biol. 6(5): 241 1931.
This name was in version 1 of The Plant List, record kew-225405, and has not been changed.