This name is a synonym of Cymbopogon jwarancusa subsp. olivieri (Boiss.) Soenarko.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 406116) with original publication details: Cat. Pl. Punjab Sindh 174 1869.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:396879-1.
This name was in version 1 of The Plant List, record kew-406116.