Perennials c. (15–) 30–55 (–70) cm tall, loosely caespitose or one-stemmed; rhizome thick, c. 3–5 mm in diam., creeping to ascending, often with fibrous cover, nodulose, with internodes usually 0.5–2.0 cm long; stolons short, ascending. Lowermost leaves cataphyllous, c. 1–3 cm long, brownish; basal leaves flat, 7–16 (–20) cm long, 3.5–5.0 (–7.5) mm wide; cauline leaves 3–4 (–5), (1.5–) 2.5–5.0 (–15) cm long; margins densely ciliate, later sometimes glabrescent, densely papillose-serrulate; apex subulate. Lower bract brownish-membranous to subherbaceous, c. 1.0–3.5 (–5.0) cm long, shorter than inflorescence. Inflorescence of (1–) 2–5 (–15) large hemispherical to cup-shapedclusters; clusters (2–) 3–5 (–11)-flowered, 0.7–1.0 cm long, c. 1.0–1.5 cm wide; peduncles suberect, c. 2–10 cm long, smooth; secondary branches absent or frequent, distally inserted, short. Bracteoles scarious, often brownish at base, ovate, acuminate, c. 3.0–3.5 mm long; midrib distinct. Tepals ±equal, ovate-lanceolate or broadly lanceolate, c. 5.0–6.5 mm long, acute to acuminate; central band deep castaneous-brown; margins distinct, broad, membranous. Stamens 6; anthers 1.7–3.5 mm long, 2–10 times as long as filaments; filaments 0.3–0.9 mm long; style 1.8–2.7 mm long; stigmas c. 2.5–4.0 mm long. Capsule ovoid to broadly ovoid, acuminate, shorter than perianth, dark castaneous to pale castaneous-brown; capsule segments 3.3–4.0 × 2.3–2.8 mm long; mucro to 0.5 mm long. Seeds broadly ovoid, deep brown, 1.7–1.9 mm long, 1.3–1.4 mm wide, with apical and basal whitish patches of loose outer seed-coat, distinctly fibrillate.