(Coville) Wiegand, Bull. Torrey Bot. Club 27: 523 (1900)
Perennials, usually 30–60 cm tall, densely caespitose; rhizome short, densely branched. Cataphylls 0–2, brownish, loose; leaves basal, (1–) 2–3 per stem, 5–15 cm long, ±flat, c. 0.5–1.3 mm wide; sheaths loose, with membranous margins; auricles acutish to subobtuse, membranous, 0.5–1.0 (–1.5) mm long. Lower bract leaf-like, c. 4–9 cm long, usually longer than the inflorescence. Inflorescence ±dense, c. 1–7 cm long, usually 5–50-flowered, of 1–5 primary branches bearing usually subcontracted cymes; flowers borne singly or in loose clusters. Bracteoles broadly ovate, subobtuse, scarious. Tepals subequal, lanceolate, acuminate, (3.5–) 4.0–4.5 (–5.0) mm; central band greenish-brownish becoming pale brown; margins scarious. Stamens 6, not exserted; anthers 0.2–0.5 mm long; filaments 0.5–1.0 mm long; style 0.1–0.2 mm long; stigmas c. 1.0–1.5 mm long. Capsules unilocular, broadly ellipsoid to ovoid, obtuse, later truncate to retuse, 3.5–4.5 mm long, shorter than perianth, light brown. Seeds 0.4–0.5 × 0.15–0.20 mm; appendages ±absent or minute. 2n = 80, fide R.E.Brooks & S.E.Clemants, Fl. North Amer. 22: 223 (2000). Fig. 124.