This name is a synonym of Carex breviculmis var. fibrillosa (Franch. & Sav.) Matsum. & Hayata.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 229420) with original publication details: J. Nanjing Univ. (Biology) 1962(2): 49 1962.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:20002404-1.
This name was in version 1 of The Plant List, record kew-229420, and has not been changed.