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Tufted perennial 600-1000(-1200) mm high; sometimes stoloniferous; basal sheaths hairy. Leaf blade 80-250 x 2-8 mm. Inflorescence of 2-6 racemes, racemes 60-120 mm long. Spikelet 2.0-3.5 mm long, purple; lower glume absent; upper glume a minute scale, obtuse to acute; lower lemma longer than spikelet, scabrid, nerves prominent, awn 5-20 mm long, straight, purple; upper floret dark brown at maturity, lemma awnless, anther 1.5-2.0 mm long.
Perennial, sometimes stoloniferous and tufted, up to 1 m high. Leaf blades 80-250 mm long, 2-8 mm wide. Basal sheaths hairy. Spikelets 2.0-3.5 mm long; lower lemma with a straight awn 5-20 mm long; female-fertile floret dark brown at maturity.
Inferior lemma entire, the awn 5–20 mm. long, rarely shorter on some of the spikelets.
Tufted perennial, the basal sheaths pubescent to tomentose.
Inflorescence of (2)3–8(10) racemes, each 3–16 cm. long.
Superior glume 0.1–0.5 mm. long, obtuse to acute.
Spikelets 2.5–3.5 mm. long, narrowly lanceolate.
Superior floret dark brown.
Culms 30–100 cm. high.
