This name is a synonym of Crassula tetragona L..
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Prodr. Stirp. Chap. Allerton 309 1796.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:273091-1.
This name was in version 1 of The Plant List, record kew-2741660.