This name is a synonym of Canthium inerme (L.f.) Kuntze.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 190821) with original publication details: Nov. Gen. Pl. 131 1798.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:766318-1.
This name was in version 1 of The Plant List, record kew-190821, and has not been changed.