This name is a synonym of Crassula campestris (Eckl. & Zeyh.) Endl..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 8903254) with original publication details: Revis. Gen. Pl. 3(3): 83 1898.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:275189-1.
This name was in version 1 of The Plant List, record tro-8903254.