Ruschia odontocalyx Ruschia odontocalyx (Schltr. & Diels) Schwantes in Z. Sukkulentenk. 2: 187. 1926 sec. Hartmann 20171≡Mesembryanthemum odontocalyx Schltr. & Diels, Namal. & Kalahari: 693. 1907 syn. sec. Hartmann 201711. Hartmann, H. E. K. 2017 – In: Hartmann, H. E. K., Illustrated handbook of succulent plants. Aizoaceae, ed. 2. – Berlin: SpringerContent