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False panicle 30–40 cm long, dense; spatheoles 1.8–2.6 cm long, lanceolate, glabrous or thinly pilose, russet or tinged with purple and yellow; peduncles 2–10 mm long, 1/8–1/2 as long as the spatheole, barbate above; racemes 1–1.5 cm long, 6–8-awned per pair, exserted laterally, deflexed; raceme-bases subequal, the superior up to 0.5 mm long, flattened, stiffly barbate.
Sessile spikelets 4–4.5 mm long; callus 0.5–1 mm long, oblong to cuneate, rarely square, broadly rounded at the apex; inferior glume oblong-lanceolate, glabrous to shortly pilose; awn 0.8–1.8 cm long, the column minutely pubescent.
Homogamous spikelets 4.5–5.5 mm long, a single pair at the base of the inferior raceme only, glabrous except for the ciliate margins.
Pedicelled spikelets 4.5–6 mm long, glabrous to puberulous, acuminate at the apex; callus scarcely developed; pedicel-tooth obscure.
Robust, coarsely caespitose perennial; culms up to 200 cm high, sometimes supported by stilt roots.
Leaf sheaths glabrous; leaf laminas up to 50 cm × 12 mm, scaberulous.
