Perennials, to 80 cm tall, caespitose; rhizome densely branching. Cataphylls 1–2; leaves basal or sub-basal, 2–5 per stem, ±flat (becoming involute under xeric conditions) 9–25 cm long, 0.8–1.5 (–2.4) mm wide; auricles 0.4–1.1 (–2) mm, scarious, whitish or tinged purple. Lower bract (1–) 4–15 cm long, usually longer than the inflorescence. Inflorescence cymose, ±dense, 1.5–8 cm long, (10–) 40–150-flowered. Bracteoles broadly ovate, membranous, sometimes tan, acute, 1.2–2.6 mm long. Tepals subequal, ±lanceolate, acute, with the apices appressed to capsule in fruit; central band green to tannish; margins paler, 3.5–5.7 mm long; inner tepals often slightly shorter. Stamens 6, not exserted; anthers 0.5–1 mm long; filaments 0.6–1.1 mm long; style c. 0.2 mm long; stigmas 1.2–2.2 mm long. Capsules trilocular, trigonous-ellipsoid to narrowly so, 2.6–4.7 mm long, subabruptly narrowing into ±obtuse narrow apex, dark tan to reddish brown. Seeds ±ellipsoid, (0.32–) 0.45–0.52 (–0.65) × 0.12–0.26 mm, alveolate-reticulate; appendages absent. 2n = c. 80, fide R.E.Brooks, in R.E.Brooks & S.E.Clemants, Fl. North Amer. 22: 221 (2000).