ha·wor·thi·a (hô-wûr'thē-ə, -thē-) n. Any of numerous succulent South African herbs of the genus Haworthia, having densely imbricate, often warty leaves that are clustered in rosettes. Also called star cactus, wart plant.
[New Latin Haworthia, genus name, after Adrian Hardy Haworth (1767-1833), British botanist.]