Ruschia haworthii Ruschia haworthii H.Jacobsen & G.D.Rowley in Natl. Cact. Succ. J. 28: 6. 1973 sec. Hartmann 20171≡Mesembryanthemum dilatatum Haw., Misc. Nat.: 68. 1803 syn. sec. Hartmann 201711. Hartmann, H. E. K. 2017 – In: Hartmann, H. E. K., Illustrated handbook of succulent plants. Aizoaceae, ed. 2. – Berlin: SpringerContent