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DescriptionPotentially tree-sized succulent up to 7 m high with thick, erect, succulent branches arising from a short woody trunk. Branches blue-green; ribs set with clusters of 5-10 sharp spines. Leaves absent. Flowers arising from the ribs, large and showy, up to 25 cm long, white, opening at night. Fruit a large succulent berry, c. 6 cm long, pink to red when ripe.