This name is a synonym of Guadua longifolia (E.Fourn.) R.W.Pohl.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 398842) with original publication details: Smithsonian Contr. Bot. 9: 66 1973.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:28863-2.
This name was in version 1 of The Plant List, record kew-398842.