Perennials, (4–) 15–30 cm tall, with creeping short- or medium long-noded, ±densely branched rhizome, forming dense or loose stands. Stem terete, (0.3–) 0.5–0.8 mm diam., ±hard, mid-green; ridges (5–) 7–10 (–20), indistinct; subepidermal sclerenchyma strands present; pith continuous, arachnoid, later ±evanescent. Cataphylls 2–3, to c. 4 cm long; upper cataphylls yellowish stramineous distally, proximally brownish, with filiform blade to 1 mm thick, 2–12 cm long and often nearly reaching inflorescence, brownish. Lower bract c. 3–10 cm long, 3–4× length of the inflorescence, much shorter than stem. Inflorescence pseudolateral, short, fasciculate to capitate; flowers 1–6, subsessile or on pedicels to 1.5 cm long. Bracteoles to 1.8–2.5 mm long, ovate, subacute, membranous. Tepals lanceolate, 3.5–5.0 mm long, with outer ones longer, acute, greenish; central band prominent, often suffused pale reddish; margins broad, membranous. Stamens 6; anthers 0.8–1.4 mm long, equalling to usually 2× as long as 0.6–1.0 mm filaments; style c. 0.1–0.2 mm long; stigmas c. 0.5–0.8 mm long. Capsule triseptate, trigonous, ±obovoid, 2.5–4.5 mm long, equalling or slightly shorter than outer tepals, obtuse with short mucro c. 0.1–0.2 mm long, brownish. Seeds ovoid, c. 0.5 × 0.3 mm, apiculate, faintly striate, subferruginous; appendages absent.