Perennials, c. 20–35 (–50) cm tall, loosely caespitose; rhizome long, creeping to ascending, c. 1.5 mm diam. Cataphylls 0–2, brown; basal leaves 2–4, to 20–35 cm long, to 2.0–2.5 mm wide; cauline leaves 2–4, with margins papillose; sheaths loose; auricles usually present, scarious, subacute, to c. 1 mm long. Lower bract short, leaf-like, to c. 3 cm long, usually shorter than inflorescence. Inflorescence umbelloid, of (1–) 2–4 (–5) ±semiglobose dark 3–8-flowered heads; peduncles to c. 4 cm long, papillose, rarely abbreviated. Tepals subequal, papillose, 3.5–4.5 mm long; outer tepals slightly longer, ±acute to mucronate; inner tepals obtuse to rounded; central band greenish to pale brown, bordered deep castaneous; margins translucent-brownish, rarely scarious. Stamens 6; anthers c. 1.0–1.4 mm long; filaments 0.6–0.9 mm long; style to c. 0.8 mm long; stigmas c. 1.5 mm long. Capsule trilocular, broadly oblong-ovoid, 3.6–4.4 mm long, obtuse to truncate, mucronate, dark castaneous-brown, exceeding perianth or slightly so. Seeds obliquely narrowly ovoid, c. 0.7 × 0.35 mm; outer seed-coat not tight, shining, faintly reticulate, pale brown; appendages absent.