This name is a synonym of Cyperus alterniflorus R.Br..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym and as a spelling variant (record 235592) with original publication details: Syn. Pl. Glumac. 2: 54 1854.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:303731-1.
This name was in version 1 of The Plant List, record kew-235592, and has not been changed.