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Coarse perennial; culms 2–3 m. high.. Leaf-blades 20–60 cm. long, 3–18 mm. wide.. False panicle narrow, 20–40 cm. long, usually purplish; spatheoles narrowly lanceolate, 2–4.5 cm. long, brownish red, the peduncles 0.3–1.5 cm. long; racemes 1.5–2(–2.5) cm. long, (3–)4–6(–9)-awned per pair, deflexed; raceme-bases subequal, up to 2 mm. long, flattened, glabrous.. Homogamous pairs 2 at the base of each raceme.. Sessile spikelet 6–8 mm. long, glabrous to pubescent; callus 1.5 mm. long, sharply acute; awn 2–5.5 cm. long, the column pubescent with white or fulvous hairs 0.2–0.5 mm. long.. Pedicelled spikelet with or without a bristle up to 5 mm. long.
False panicle 20–40 cm long, narrow, usually purplish; spatheoles 2–4.5 cm long, narrowly lanceolate, brownish-red, glabrous, barbate or not at the base; peduncles 0.3–1.5 cm long, glabrous or shortly hirsute above; racemes 1.5–2(2.5) cm long, (3)4–6(9)-awned per pair, deflexed; raceme-bases subequal, the superior 1–2 mm long, flattened, glabrous (except in the fork), truncate at the apex and lacking appendages.
Sessile spikelets 6–8 mm long; callus c. 1.5 mm long, sharply acute; inferior glume narrowly lanceolate to lanceolate-oblong, glabrous to pubescent; awns 2–5.5 mm long, the column pubescent with white or fulvous hairs 0.2–0.4(0.5) mm long, rarely quite awnless.
Leaf sheaths glabrous, or pilose towards the summit, rarely pilose throughout; leaf laminas 20–60 cm × 3–10 mm, glabrous or sometimes sparsely hirsute below, usually with long grey hairs at the base.
Pedicelled spikelets 5–7.5 mm long, narrowly lanceolate, muticous or with a terminal bristle up to 5 mm long; callus scarcely developed; pedicel-tooth obscure.
Homogamous spikelets 7–9 mm long, 2 pairs at the base of each raceme forming a kind of involucre, scabrid on the margins, muticous.
Coarse, caespitose perennial; culms up to 300 cm high, erect.
Coarse grass 2–3 m. high.
