This name is a synonym of Dieffenbachia duidae (Steyerm.) G.S.Bunting.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 2102645) with original publication details: Bol. Soc. Venez. Ci. Nat. 25: 30, f. 2 1963.
This name was in version 1 of The Plant List, record tro-2102645, and has not been changed.