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Glabrous, densely clump-or mound-forming succulent, 50-300 mm x 0.3-2.0 m; branches 20-55 mm thick, shortly clavate, 6-10-angled, bright shiny green becoming brown below, with sharp spines 6-20 mm long. Leaf-rudiments 2-50 x 2-7 mm, linear-lanceolate to spathulate. Cyathia on glabrous peduncle 1-8 mm long, 3-6 mm in diam.; glands 5, dark purple-red to yellow-green, entire. Flowering time July-Sept. Capsule 4.5-6.0 mm in diam., ± spherical, glabrous.
Dwarf succulent, up to 300 mm tall, freely branched at ground level, with branches regularly and densely packed into cushion-like masses or mounds. Branches 25-33 mm thick, nearly always 7-angled, green. Spines glabrous. Flowers yellow.
