- a plant, Mesembryanthemum crystallinum, native to the Mediterranean region, having fleshy leaves that are covered with glistening vesicles and are sometimes eaten as greens.
- a low-growing plant, Mesembryanthemum (or Cryophytum) crystallinum, of southern Africa, with fleshy leaves covered with icelike hairs and pink or white rayed flowers: family Aizoaceae
