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 20303254) with original publication details: Narr. Exped. Zaire 435 1818.
This name was in version 1 of The Plant List, record tro-20303254.