Perennials, 30–60 cm tall, usually densely caespitose, rarely shortly rhizomatous; stem terete, 1.0–1.8 mm in diam. Cataphylls 0–2. Cauline leaves 2–3, spread along stem and ±equalling it, unitubular, perfectly septate, terete, 1.0–1.4 mm in diam.; auricles scarious, usually 1.0–2.0 mm long, ±acute. Lower bract leaf-like, 2.5–7 cm long, shorter than inflorescence. Inflorescence terminal, 1–12 cm long, decompound, diffuse, of 6–20 mostly semiglobose, (4–) 10–25 (–40)-flowered clusters. Tepals ±equal, narrowly lanceolate, (2.2–) 2.5–3.3 (–3.5) mm long, acuminate, with tips sometimes slightly recurved at maturity, greenish, later stramineous-brown (often red-tinged at apex); margins membranous, 0.1–0.2 mm wide. Stamens 3, shorter than perianth; anthers 0.4–0.7 mm long; filaments c. 0.8–1.2 mm long; style c. 0.1–0.2 mm long; stigmas 0.5–1.0 mm long. Capsule unilocular, narrowly ovoid to narrow-ellipsoid, c. 3.0–4.2 mm long, acute to broad-acute, with a short rostrum 0.2–0.5 mm long, usually exceeding perianth, golden brown to castaneous-brown. Seeds ellipsoid, apiculate, 0.5–0.6 × c. 0.2 mm, pale brown, longitudinally c. 20-striate, irregularly transversally reticulate, areas finely lineolate; appendages absent.