Perennials, c. (15–) 35–80 cm tall, robust; rhizome creeping, leafy distally, to c. 4 mm in diam.; stolons often present, long, leafy. Leaves in basal rosette, usually bluish green, rarely pale green, c. 10–20 (–32) cm long, (5–) 9–13 (–15) mm wide, ±flat, base often purplish; sheaths closed, later split, short; margins hyaline, 0.1–0.2 mm wide; apex subulate. Stem thick, rigid, ±smooth to papillose. Lower bract herbaceous, c. 1.0–3.5 cm long, much shorter than inflorescence. Inflorescence usually 5–25 cm long, supra-decompound, less often reduced; main branches ±erect to umbelloid; secondary branches subdistal to median, ±erecto-patent, of (1–) 3 to many, c. (6–) 12–15 (–20)-flowered ±hemispherical heads c. 8–11 mm wide; upper-most bracts scarious with distinct midrib, subaristate, c. 3.5–4.0 mm long. Tepals ±unequal; outer tepals lanceolate, carinate, acuminate-subaristate, c. (3.0–) 3.6–4.7 mm long, with central band ±prominent, usually scabrid, brown to dark brown, often with green midrib, rarely entirely pallid; inner tepals ovate-lanceolate, ±acute to obtuse, c. (3.0–) 3.2–4.0 mm long, with central band ±brown, often with green midrib, with margins membranous, broad. Stamens 6; anthers 1.3–1.6 mm long; filaments, 0.4–0.5 mm long; style (including stylar beak) c. 1.5 mm long; stigmas red, c. 2 mm long, exserted. Capsule trilocular, ±ovoid, ±trigonous, subabruptly contracted in a beak (0.2–) 0.4–0.6 mm long, c. 2.4–2.7 mm long, ±shorter than perianth, usually dark castaneous; capsule segments c. 1.4 mm wide. Seeds ±brown, ovoid, c. 0.4–0.6 mm long, 0.3 mm wide; apex whitish apiculate; surface faintly reticulate. Fig. 49.