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 215554) with original publication details: Wiener Ill. Gart.-Zeitung 1901: 415 1901.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:89428-1.
This name was in version 1 of The Plant List, record kew-215554, and has not been changed.