⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record kew-297376, with some changes.
This name is a synonym of Haworthia rigida (Lam.) Haw..
The record derives from WCSP which reports it as a synonym (record 297376) with original publication details: Trans. Linn. Soc. London 7: 8 1804.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:529445-1.