This name is a synonym of Carex cristatella Britton & A.Br..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50123004) with original publication details: Pap. Michigan Acad. Sci. 2: 17 1923.
This name was in version 1 of The Plant List, record tro-50123004.