This name is a synonym of Carex diluta M.Bieb..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 224691) with original publication details: Fl. URSS 3: 618 1935.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:298679-1.
This name was in version 1 of The Plant List, record kew-224691.