Plants forming clumps to 1 m in diam.; persistent woody bases up to 2.5 cm in diam. Stems procumbent to erect, often much-branched, 10–30 cm, fleshy joints bright green, 3–20 × 2–3 mm. Inflorescences of many spikes, 5–35 mm, often with 5–10 sterile segments distally; fertile segments 2–20, 2–3 × 2–3 mm. Flowers: 1.5–2 × 1.2–1.5 mm; anthers 0.5–1 mm. Seeds dark brown, 1–1.4 mm.