Lepidosperma concavum R.Br. APNI*
Description: Tufted perennial with short vertical rhizome. Culms rigid, erect, flat, or convex on one face, or concavo-convex, glabrous, smooth or striate, 20–60 cm high, 3–7 mm wide; margins scabrous or scaberulous, sharp.
Leaves similar in form to culms but usually shorter, 3–6 mm wide; sheath 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; 2 or 3 lowest empty, shorter than fertile glumes, obtuse to acute, mucronate; fertile 6–7 mm long, long-acute to acute. Scales 6, one-third to three-fifths the length of nut, whitish. Anthers 2.5–4.0 mm long, excluding appendage 0.3–1.0 mm long.
Nut ovoid to obovoid, 2.7–4.0 mm long, 1.3–1.8 mm diam., pale to dark brown, shining, smooth.
Distribution and occurrence: Grows in heath, woodland and forest on sandy soils; mainly coastal areas, also Hilltop, and the Budawang Ra.
NSW subdivisions: CC
This is now considered to be a taxon restricted to the coastal Sydney region. The rest of what was named as this in the past is now called L. sieberi. [The descirption here is yet to be modified]
Text by K. L. Wilson (1993); edited KL Wilson (Jan 2017)
Taxon concept: Flora of NSW 4 (1993)
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