This name is a synonym of Glottiphyllum longum (Haw.) N.E.Br..
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Natl. Cact. Succ. J. 28: 6 1973.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:874026-1.
This name was in version 1 of The Plant List, record kew-2827025.