This name is a synonym of Zantedeschia rehmannii Engl..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50006720) with original publication details: Gard. Chron. 4: 570 1888.
This name was in version 1 of The Plant List, record tro-50006720, and has not been changed.