This name is a synonym of Dieffenbachia macrophylla Poepp..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 61778) with original publication details: Oesterr. Bot. Wochenbl. 65 1854.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:86910-1.
This name was in version 1 of The Plant List, record kew-61778, and has not been changed.