This name is a synonym of Cyperus laevigatus subsp. distachyos (All.) Ball.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 250718) with original publication details: Bull. Misc. Inform. Kew 1926: 375 1926.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:309641-1.
This name was in version 1 of The Plant List, record kew-250718.