Psammophora longifolia Psammophora longifolia L.Bolus, Notes Mesembryanthemum 2: 201. 1930 sec. Hartmann 20171≡Psammophora herrei L.Bolus, Notes Mesembryanthemum 2: 305. 1931 syn. sec. Hartmann 201711. Hartmann, H. E. K. 2017 – In: Hartmann, H. E. K., Illustrated handbook of succulent plants. Aizoaceae, ed. 2. – Berlin: SpringerContent