L.A.S.Johnson in J.M.Black, Fl. S. Austral. , ed. 3, 1: 325 (1978)
T: Oil Tree Lagoon W of Balldale, 10 Mar 1959, L.A.S.Johnson & E.F.Constable; holo: NSW48566
Perennials, 30–120 cm tall; rhizome short- to long-noded. Stem ±tufted, terete, 1.2–3.5 mm in diam., ±hard, yellow-green, ±smooth; ridges 38–90, low, indistinct; dorsal epidermis cells not enlarged; subepidermal sclerenchyma strands present, forming radial lamellae and every second one connected to a small vascular bundle; pith of perfectly astericiform cells, mostly much interrupted. Cataphylls 3–4; upper cataphylls 5–10 cm long, lax, abaxially dull yellow distally, dark golden brown at base, ±glossy only at the very base, adaxially silvery to golden brown. Lower bract 5–30 cm long, longer than inflorescence; sheath narrow. Inflorescence 3–17 cm long, diffuse; flowers numerous, loosely to densely clustered or solitary. Bracteoles 1–1.5 mm long, ±unequal, ovate, acute, partly membranous. Tepals lanceolate, acuminate to subulate, stramineous-brown, occasionally red-tinged with ±broad membranous or yellowish margin gradually narrowing towards the apex; outer tepals 2.2–3.5 mm long, slightly longer than inner. Stamens 3 (–6); anthers 0.8–1.1 mm long; filaments 0.4–0.5 mm long; style c. 0.1–0.2 mm long; stigmas 0.5–1.0 mm long. Capsule triseptate, ellipsoid, 2.0–2.8 mm long, shorter than (occasionally to exceeding) tepals, obtuse, not or shortly mucronate, golden brown. Seeds narrowly ovoid, c. 0.4 × 0.2 mm, apiculate, pale brown, indistinctly 12–15-striate, densely finely reticulate; appendages absent.