This name is a synonym of Ziziphus attopensis Pierre.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 27501425) with original publication details: Acta Sci. Nat. Univ. Sunyatseni 41 1959.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:719237-1.
This name was in version 1 of The Plant List, record tro-27501425, and has not been changed.