P.Beauv. ex Poir. in J.B.A.M.de Lamarck, Encycl. , Suppl. 3: 160 (1813)
Perennials, 15–70 cm tall, caespitose; rhizome short. Cataphylls absent or single; leaves basal, (1–) 2–3, 10–30 cm long, canaliculate to ±flat, 0.5–1.0 mm wide; auricles broadly obtuse, scarious, 0.2–0.4 mm long, rarely subcoriaceous. Lower bract leaf-like, 1–10 cm long, usually ±shorter than inflorescence. Inflorescence terminal, c. 1–5 cm long, 5–15 (–30)-flowered, of 1–4 primary branches with few-flowered unilateral cymes, with regularly distributed singly-borne flowers. Bracteoles broadly ovate, membranous, 1.2–1.7 mm long, obtuse to subacute. Tepals subequal, lanceolate, 3.3–4.4 mm long; central band green, later stramineous, paler towards distinct membranous margins, acuminate to acute. Stamens 6, not exserted; anthers 0.4–0.8 mm long; filaments 0.5–0.9 mm long; style 0.1–0.2 mm long; stigmas 1.5–2.5 mm long. Capsule trilocular, ellipsoid, 3.0–4.0 (–4.7) × c. 1.3–1.7 mm long, narrowing into ±narrow, obtuse apex, tan or light brown. Seeds ellipsoid to lunate, c. 0.3–0.4 mm long, to c. 0.2 mm wide, pale brown, longitudinally striate, indistinctly reticulate; appendages minute, to c. 0.1 mm long. 2n = c. 80, fide R.E.Brooks, in R.E.Brooks & S.E.Clemants, Fl. North Amer. 22: 222 (2000).