LITHOPS OPTICA Species Mix Seeds - Cactus Mix - House Plants cactus cacti succulent For Greenhouse and Outdoor - Living Rocks Stones - Quality Non-GMO Seeds By MS.CO (1 Packet) 50+ Seeds per Packet LITHOPS OPTICA Species Mix Seeds AKA Living Rocks/Stones Excellent For Indoor or GreenHouses Lithops is a genus of succulent plants native to southern Africa