This name is a synonym of Diospyros californica (Brandegee) I.M.Johnst..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 383762) with original publication details: Proc. Calif. Acad. Sci. IV, 12: 1124 1924.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:81178-2.
This name was in version 1 of The Plant List, record kew-2769479.