Lithops coleorum Lithops coleorum S.A.Hammer & Uijs, Aloë 31: 36. 1994 sec. Cole & Cole 201711. Cole, D. T. & Cole, N. A. 2017: Lithops. – In: Hartmann, H. E. K., Illustrated handbook of succulent plants. Aizoaceae, ed. 2. – Berlin: SpringerContent