A highly unusual, slow-growing succulent that looks exactly like a smooth, rib-stitched green ball. Native exclusively to the arid Great Karoo region of South Africa, this fascinating plant evolved its perfectly spherical shape as an engineering survival tactic to store maximum water while exposing minimal surface area to the intense desert sun. Because of over-collection in the 1900s, it is a protected endangered species in the wild, but it has become a highly popular and prized addition to global indoor succulent collections.