Compact, dwarf succulent. Leaves erect to spreading, trigonous, broadening only a little from base, broadest at ± 4/5 of their length, apically triangular, symmetrical when young, becoming asymmetrical when starting to flower, 25-50 x 13-18 mm. Flowers solitary, 38-45 mm diam., petals yellow, often white basally, filamentous staminodes absent, stamens in a central column, rims of later valves well visible as high ridges between which the stigmas arise in the centre. Fruit with high valve rims rising towards centre where they leave a cavity from which the stigmas have disappeared, without closing bodies, 5-locular.