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Dioecious, much-branched, spiny, glabrous succulent, up to 0.7 x 0.7 m, branches cylindrical-clavate, 30-80 mm diam., with obscure tubercles fused into 10-16 low angles and many stout persistent and later spiny peduncles 4-20 mm long, each branching subapically into 3-5, spreading, rigid, sterile spinelets 4-10 mm long. Leaves soon deciduous, 3-10 mm long. Cyathia many around apex of each branch, each on a peduncle 5-20 mm long in axil of tubercle, 3.5-5 mm diam., with 5 entire green to reddish glands. Capsule sessile, 5-7 mm diam., glabrous.
