This name is a synonym of Arundinella setosa Trin..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 25509075) with original publication details: Hooker's J. Bot. Kew Gard. Misc. 2: 102 1850.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:390744-1.
This name was in version 1 of The Plant List, record tro-25509075.