Dioecious, dwarf, spineless, glabrous succulent, 50-200 mm tall, with single, unbranched stem, 80-100 mm diam. and minute tubercles arranged in 7-10 low angles. Leaves soon deciduous, ± 1 mm long. Cyathia many near apex of stem, 1-3 on each short, deciduous peduncle in axil of tubercle, 2.5-6 mm diam., with 5 entire, green glands. Capsule sessile, 6-7 mm diam., glabrous.