This name is a synonym of Cymbopogon annamensis (A.Camus) A.Camus.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 406119) with original publication details: Bull. Mus. Natl. Hist. Nat. 26: 564 1920.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:396882-1.
This name was in version 1 of The Plant List, record kew-406119, and has not been changed.