Common name: Beardless Bog-rush
Schoenus imberbis R.Br. APNI*
Description: Tufted perennial. Culms erect, rigid, terete, grooved, smooth, nodeless, 8–35 cm long, 0.5–0.8 mm diam.
Leaves with blade to 1 cm long; sheath straw-coloured above, red-brown at base, papillose, dull; mouth glabrous or sparsely ciliolate; ligule present. Inflorescence obconic, with 1 cluster of c. 8–25 spikelets, 0.5–1.5 cm long; lowest involucral bract to 2.5 cm long. Spikelets narrow-ovate to linear, acute, 1- or 2-flowered, 4–8 mm long. Glumes 5–7, lowest 3–5 empty, narrow-ovate, acute, dark red-brown to blackish above, straw-coloured near base, dull, with minutely woolly to glabrous margins; fertile glumes 4–5 mm long. Bristles absent. Stamens 3; anthers 2.0–2.3 mm long.
Nut trigonous, obovoid, 1.3–1.5 mm long, c. 1.0 mm diam., scarcely 3-ribbed, wrinkled, papillose, glabrous, glistening, straw-coloured to red-brown often with darker patches.
Distribution and occurrence: Grows in dry sclerophyll forest and heath on sandy soils; south from lower Hunter Valley and Blue Mtns.
NSW subdivisions: CC, SC, CT
Other Australian states: Vic.
Text by K. L. Wilson
Taxon concept: Flora of NSW 4 (1993)
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