Perennial herb from a short rhizome, with spreading fleshy roots 3–5 mm in diameter, and several thin fibrous roots. Leaves linear to linear-lanceolate, flattened, terete or 3-angled and grooved, up to 36 cm long, 2–8(–12) mm wide, hollow and pithy inside, expanding at the base into a tubular sheath, the outer leaves reduced to membranous sheaths up to 4.5 cm long. Peduncle at anthesis 10–18(–25) cm long, 1–3 mm wide, shorter than the leaves; raceme at anthesis 1.5–3.5 cm long, 1.2–1.7 cm in diameter; bracts cuspidate, up to 12 mm long, 2–3 mm wide at the base, attenuate into a filiform apex which is slightly recurved, membranous and transparent exceptfor a brown midrib; pedicels 2–4 mm long, overtopped by the bracts at anthesis, recurved after flowering. Flowers congested, white; tepals 5–6 mm long, the outer ± 2 mm wide, 3-nerved, the inner ± 1 mm wide, 1-nerved; stamens 3–4 mm long, yellow; ovary ± 1 mm long; style ± 4 mm long. Capsule obovoid, ± 4.5 mm long, ± 4 mm wide, not inflated at maturity; seeds deltoid, angled, ± 2 mm wide.
