Glottiphyllum regium Glottiphyllum regium N.E.Br. in Gard. Chron., ser. 3, 83: 123. 1928 sec. Hartmann 201711. Hartmann, H. E. K. 2017 – In: Hartmann, H. E. K., Illustrated handbook of succulent plants. Aizoaceae, ed. 2. – Berlin: Springer=Glottiphyllum compressum L.Bolus, Notes Mesembryanthemum 2: 249. 1931 syn. sec. Hartmann 201722. Hartmann, H. E. K. 2017 – In: Hartmann, H. E. K., Illustrated handbook of succulent plants. Aizoaceae, ed. 2. – Berlin: SpringerContent