T: Tasmania, Castle Forbes Bay, 43 080 S, 146 585 E, 22 May 1978, W.M.Curtis & B.Allen 3; holo: NSW; iso: HO.
Perennials, 60–100 cm tall; rhizome stout, creeping, covered with dark, ±glossy scales. Stem leafless, 1.5–4 mm diam., hard, mid-green to ±yellowish green, not glaucous; ridges 30–50, conspicuous; cells on ridges scarcely radially elongated; stomata superficial; subepidermal sclerenchyma strands present, forming radial lamellae; pith of astericiform cells, wholly or partly interrupted, rarely continuous in small individuals. Cataphylls loose; upper cataphylls 4–12 (–15) cm long, 7–13 mm wide, abaxially yellow-brown distally, brown to dark brown and glossy towards base, adaxially coppery to golden brown, ±glossy. Inflorescence pseudolateral, (0.7–) 1–3 cm long, condensed, of 1 or a few clusters; flowers numerous, densely clustered. Lower bract 3–18 (–30) cm long, exceeding or shorter than inflorescence; sheath narrow. Outer tepals 1.8–2.5 mm long, longer than or equalling inner ones, all acute, stramineous-brown with narrow to broad membranous margins. Stamens 3; anthers 0.5–0.6 mm long; filaments c. 0.5 mm long; style to 0.2 mm long; stigmas 0.5–0.8 mm long. Capsule triseptate, obovoid to ovoid, 2–2.4 mm long, equalling perianth, obtuse to subacute, abruptly contracted in c. 0.2 mm mucro, pale castaneous-brown to brown, shining. Seeds narrowly ovoid, c. 0.5 × c. 0.25 mm, apiculate, pale brown, c. 15–20-striate, reticulate; appendages absent.