This name is a synonym of Zantedeschia aethiopica (L.) Spreng..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 166307) with original publication details: Madroño 11: 147 1951.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:211385-2.
This name was in version 1 of The Plant List, record kew-166307, and has not been changed.