Perennials, usually up to 100 cm tall, caespitose to loosely caespitose; rhizome stout, long, branched, horizontal to ascending; stolons ±absent. Basal leaves up to 40 cm long, usually 4–12 mm wide; cauline leaves 3–5 (–7); leaf tip ±acute; margins ±smooth. Lower bract (1.2–) 2.0–3.0 (–5.0) cm long, shorter than inflorescence. Inflorescence decompound, usually lax, up to 20 cm long; secondary anthelas with 5–45 flowers; terminal clusters (1–) 2–3 (–5)-flowered. Bracteoles whitish-membranous, ovate, up to c. 2 mm long, sparsely ciliate. Tepals subequal; outer tepals usually 2–4 (–5) mm long, oblong-lanceolate, pale castaneous-brown to deep brown; margins usually hyaline. Stamens 6; anthers 1.0–3.7 mm long; filaments usually 0.3–0.7 mm long; style 1.6–2.2 mm long; stigmas 2.2–2.8 mm long. Capsule castaneous-brown to dark brown, ±oblong-ovoid, ±gradually narrowed, usually 2.0–4.0 mm long including mucro 0.2–0.8 mm long. Seeds brown to dark brown, oblong-ovoid, 1.2–1.9 mm long, usually 0.7–1.2 mm wide; appendage 0.1–0.2 mm, fibrillate.