Coarse tufted perennial, the basal sheaths tomentose; culms 1.5–3 m. high, the nodes bearded.. Leaf-blades 30–60 cm. long, 3–15 mm. wide.. Inflorescence terminal, of (1–)3–4(–6) subdigitate, very fragile, racemes, each 12–22 cm. long; internodes and pedicels purplish villous, subequal, clavate.. Sessile spikelet elliptic-lanceolate, 7–11 mm. long; lower glume coriaceous, 2-keeled above but merely incurved towards the base, convex, purplish villous, the keels narrowly winged towards the tridentate tip; upper lemma with an awn 20–45 mm. long.. Pedicelled spikelet lanceolate, 8–10 mm. long, awnless.
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