T: New South Wales, North Western Plains, W of Cuttabri, 17 Nov 1974, K.L.Wilson & al. 749; holo: NSW; iso: BRI, CANB, CHR, K, MO, NY.
Perennials, 35–80 cm tall, rhizomatous. Rhizome horizontally creeping; stems densely crowded. Stem leafless, slender, terete, 1–2 mm diam., hard, grey-green; ridges 22–32, ±distinct when dry; dorsal epidermis cells not enlarged; pith continuous or occasionally interrupted above, of astericiform cells. Cataphylls few, 5–8 cm long, ±tight, abaxially golden brown and dull distally, to dark yellow-brown or rarely red-brown and slightly glossy at base, adaxially silvery. Lower bract 5–18 cm long, longer than to slightly shorter than inflorescence; sheath ±dilated. Inflorescence pseudolateral, 4–11 cm long, diffuse; flowers numerous, solitary. Bracteoles ovate, to c. 1 mm long, acute, scarious. Outer tepals lanceolate, 2.4–3.0 mm long, acute to acuminate, longer than or equalling inner ones, with central band prominent and often suffused reddish; inner tepals acute, often mucronate, all stramineous-brown, often tinged red-brown, with ±broad membranous margins. Stamens (3–) 6; anthers 0.6–1.0 mm long, equalling or usually longer than 0.3–0.5 mm filaments; style c. 0.1 mm long; stigmas to c. 1 mm long. Capsule triseptate, ellipsoid to ovoid, 2.5–3.0 mm long, shorter than to slightly exceeding perianth, obtuse, not or shortly mucronate, ±dark golden brown, shining. Seeds obliquely narrowly ovoid, 0.4–0.45 × c. 0.2 mm, apiculate, 16–20-striate, densely reticulate; appendages absent.