Perennials, to 30–90 cm tall, caespitose; rhizome densely branched, short. Cataphylls 1–2; leaves basal, 2–3 (–5) per stem, (10–) 20–30 cm long, flat, 0.5–2.3 mm wide; sheaths loose, usually green; auricles acutish, membranous, 2.0–3.5 mm long. Lower bract c. 6–20 cm long, leaf-like, usually exceeding the inflorescence. Inflorescence diffuse, lax, 5–20 cm long, c. 10–100-flowered, of 2–6 primary branches bearing several loose unilateral cymes; flowers borne singly, ±remote. Bracteoles broadly ovate, membranous, 1.2–1.6 mm long, ±acute. Tepals subequal (outer ones mostly ±longer), lanceolate, acuminate; central band green, later ±stramineous, 3.2–4.5 mm long; inner tepals 2.6–3.5 mm long; margins membranous. Stamens 6, not exserted; anthers 0.3–0.7 mm long; filaments 0.8–1.1 mm long; style c. 0.2 mm long; stigmas 1.5–2.0 mm long. Capsule unilocular, broadly ellipsoid to obovoid, ±obtuse, 2.0–3.2 mm long, castaneous-brown, shorter than perianth. Seeds ellipsoid, tan, c. 0.3–0.5 × 0.20–0.25 mm, alveolate-reticulate; appendages absent. 2n = 80, fide R.E.Brooks, Novon 9: 11 (1999).