This name is a synonym of Haworthia coarctata Haw..
The record derives from WCSP
(data supplied on 2012-03-26)
which reports it as a synonym and as a spelling variant (record 277138) with original publication details: Repert. Spec. Nov. Regni Veg. 31: 83 1932.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:536052-1.
This name was in version 1 of The Plant List, record kew-277138.