This name is a synonym of Sesuvium edmonstonei Hook.f..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 703814) with original publication details: Leafl. W. Bot. 10: 352 1966.
This name was in version 1 of The Plant List, record tro-703814, and has not been changed.