This name is a synonym of Zantedeschia rehmannii Engl..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 178494) with original publication details: Gard. Chron. n.s., 1893(2): 564 1893.
This name was in version 1 of The Plant List, record kew-178494, and has not been changed.