This name is a synonym of Carex bonariensis Desf. ex Poir..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 225630) with original publication details: Enum. Pl. 2: 378 1837.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:299223-1.
This name was in version 1 of The Plant List, record kew-225630.