Perennial, loosely tufted, base knotty, covered in silky-tomentose scales. Culms stiff, erect or straggling, 40–60 cm long. Leaf sheaths glabrous or tuberculate-hispid; leaf blades lanceolate to narrowly ovate, tough, glaucous, 2–7 cm × 5–15 mm, usually glabrous, base rounded, margins cartilaginous and pectinate-setose from stout tubercles, apex setaceously acuminate; ligule 0.5–1 mm. Racemes 2–11, 2–7 cm, pale green or tinged purple, suberect; rachis internodes 1/3–2/3 length of sessile spikelets, pilose, hairs increasing to 2–3 mm at apex. Sessile spikelet 5.8–7.2 mm; lower glume linear, strongly convex, laterally keeled, margins inflexed, back obscurely veined below middle, glabrous or puberulous, rarely shortly pubescent, 5 scaberulous veins between keels toward apex, keels stoutly tuberculate-spinose, a second row of smaller tubercles on inner side of keels; upper lemma subentire to shortly denticulate, teeth 0.1–0.4 mm; awn 10–15 mm; palea absent. Anthers 3, 2.4–3.8 mm. Pedicelled spikelet narrowly lanceolate, 4–5 mm, staminate. Fl. and fr. Jul–Oct. 2n = 16, 36.
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Perennial, arising from a knotty base covered in silky scales.. Culms up to 60 cm. long, hard, wiry, trailing.. Leaf-blades narrowly lanceolate to ovate, 2–7 cm. long, 4–20 mm. wide, tuberculate-ciliate on the margins, setaceously acuminate.. Inflorescence of 2–8 racemes, each 4–7 cm. long; internodes pilose.. Sessile spikelet linear to narrowly lanceolate, 5–6.5 mm. long; lower glume rounded on the back, spinously muricate on the keels and sometimes also on the indistinct dorsal nerves; awn 8–15 mm. long; 3 anthers, 2.5–3.5 mm. long.. Pedicelled spikelet narrowly lanceolate, 4–5 mm. long.
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