This name is a synonym of Haworthia cooperi var. pilifera (Baker) M.B.Bayer.
The record derives from WCSP
(data supplied on 2012-03-26)
which reports it as a synonym (record 277456) with original publication details: Repert. Spec. Nov. Regni Veg. 42: 270 1937.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:536213-1.
This name was in version 1 of The Plant List, record kew-277456.