Perennial, 10–41 cm tall, glabrous or locally sparsely pubescent, caespitose to rhizomatous, with rhizomes to 9 cm long. Stem with numerous basal and 2–3 cauline flat leaves; basal leaves 4–25 cm × 1.5–7 mm; basal sheaths reddish–brown; cauline leaves 3.5–14 cm × 1.5–3 mm, glabrous to sparsely pubescent, rarely even conspicuously pubescent at margins, with a short mucronate projection on callose tip. Inflorescence terminal, compound; secondary/primary pedicels ratio 0.3–1.9(–2.8); primary pedicels 4–11, erect to slightly spreading; flowers borne singly on primary or secondary pedicels. Basal bract to 5.5 cm long, shorter than or seldom equalling inflorescence. Bracteoles 1.3–3.1 mm long. Tepals equal, 3.2–5.4 mm long, lanceolate, acuminate to mucronate, entire to rarely crenulate at apex, light brown to blackish castaneous brown with hyaline margins. Stamens 6; anthers 0.6–1.9 mm long, shorter or equalling to longer than filaments; anther/filament ratio 0.6–4.8; style 1–1.6 mm long; stigmas 2.2–4.2 mm long, ± persistent. Capsule ovoid, acute to acuminate, shorter to equalling or sometimes slightly exceeding tepals, light brown to stramineous. Seeds ellipsoid or rarely subglobose, 1.1–1.8 × 1.0–1.4 mm, with apical appendages 0.3–1.1(–1.3) mm long; seed/appendage ratio 1.1–4.7.