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 312706) with original publication details: Repert. Spec. Nov. Regni Veg. 44: 237 1938.
This name was in version 1 of The Plant List, record kew-312706.