Lepidosperma sieberi

Tufted perennial with long, ± vertical rhizome. Culms rigid, erect, flat, or convex on one face, or concavo-convex, glabrous, smooth or striate, 20–60 cm high, 3–7(–10) mm wide; margins scabrous, sometimes minutely so, sharp. Leaf-blades similar in form to culms but usually shorter, 3–6(–10) mm wide; sheaths straw-coloured or rarely reddish near apex, dark yellow-brown to grey-brown at base, not viscid, ± dull. Inflorescence ovate to oblong in outline, erect, ± dense, 3–15 cm long, 2–4 cm diam.; involucral bract shorter than inflorescence (rarely longer if inflorescence is depauperate). Spikelets numerous, 5–8 mm long; glumes 6–8, puberulous, red-brown to grey-brown, the 2 or 3 lowest empty, shorter than fertile glumes, obtuse to acute, mucronate; fertile glumes 6–7 mm long, long-acute to acute; hypogynous scales 6, whitish, from one-third to three-fifths length of nut. Nut ovoid to obovoid, pale to dark brown, shining, smooth, 2.7–4.0 mm long, 1.3–1.8 mm diam. Flowers spring–summer.