This name is a synonym of Antegibbaeum fissoides (Haw.) C.Weber.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50246250) with original publication details: Observ. Gen. Mesembryanthemum 135 1794.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:362889-1.
This name was in version 1 of The Plant List, record tro-50246250, and has not been changed.