Mostly 25–55 cm tall; rhizome with many of the nodes c. 10 mm long; stems in loose rows. Stem wiry, thin, c. 0.8–1.4 mm in diam., faintly irregularly striate. Cataphylls abaxially stramineous-brown to grey-brown distally, ±brown and slightly glossy at base, ±lax, truncate and ±auriculate at apex; blade filiform, short. Lower bract usually 4–6 cm long, 1/7–1/10 as long as stem. Inflorescence of 1–3 subsessile and 2–8 pedunculate flowers, usually with 1–3 main branches to c. 2 cm long (pedicels up to 15 mm). Tepals unequal. Outer tepals acute to acuminate, c. 3.5–5 mm long; central band pale brownish, bordered deep castaneous; margins membranous. Inner tepals broadly ovate, c. 2.5–3.3 mm long, obtuse or often mucronate, with broad scarious to membranous margins. Anthers 0.6–0.8 mm long; filaments 0.5–0.6 mm long; style 0.2–0.3 mm long; stigmas to c. 1 mm long. Capsule ellipsoid to narrowly oblong-ovoid, ±obtuse, c. 3–3.5 mm long, ±equalling perianth, dark castaneous-brown, with a short mucro c. 0.1 mm long. Seeds ellipsoid, c. 0.6–0.7 × c. 0.3–0.4 mm; appendages absent. 2n = 80, fide G.Knaben, Nytt Mag. Bot. 15: 244 (1968).