This name is a synonym of Tristemma mauritianum J.F. Gmel..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 20301866) with original publication details: Gen. Pl. 329 1789.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:576833-1.
This name was in version 1 of The Plant List, record tro-20301866.