This name is a synonym of Carex oligosperma Michx..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 231729) with original publication details: J. Fac. Agric. Hokkaido Univ. 26: 273 1931.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:302748-1.
This name was in version 1 of The Plant List, record kew-231729, and has not been changed.