This name is a synonym of Thamnocalamus tessellatus (Nees) Soderstr. & R.P.Ellis.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 396297) with original publication details: Trans. Linn. Soc. London 26: 31 1868.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:390566-1.
This name was in version 1 of The Plant List, record kew-396297, and has not been changed.