This name is a synonym of Zantedeschia albomaculata (Hook.) Baill..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 215555) with original publication details: Bothalia 7: 456 1961.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:89429-1.
This name was in version 1 of The Plant List, record kew-215555.