This name is a synonym of Carex planispicata Naczi.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 224452) with original publication details: Rhodora 44: 311 1942.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:45712-2.
This name was in version 1 of The Plant List, record kew-224452, and has not been changed.