Definitions for "Mesembryanthemum"
A genus of herbaceous or suffruticose plants, chiefly natives of South Africa. The leaves are opposite, thick, and fleshy. The flowers usually open about midday, whence the name.
South African annual or biennial plants having flowers that open only in bright sunlight
Mesembryanthemum is a genus of ornamental plants native to southern Africa. Many species which were formerly placed in this genus have since been moved into other genera such as Carpobrotus and Delosperma.