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Tufted perennial, 400-1000 mm high; green with mainly the lower basal parts purplish. Leaf blade 150-500 x 6-10 mm, flat; sheath brown, collar present. Inflorescence 150-190 mm long, internodes and pedicels glabrous. Sessile spikelet 5.5-8.0 mm long; lower glume smooth or granular, longitudinal nerves distinct; upper glume awnless; anther 3.4-3.7 mm long. Pedicellate spikelet reduced to a scale less than 1 mm long.
Sessile spikelet 5.5–8 mm long, narrowly ovate; inferior glume smooth or granular, very obscurely winged, acute at the apex; superior glume awnless.
Pedicelled spikelet suppressed or much reduced, awnless, represented by a curved pedicel as long as the sessile spikelet.
Leaf laminas 15–50 cm × 4–8 mm, flat, with a brown collar at the junction with the sheath.
Raceme 10 cm long or more, the internodes 5–10 mm long, glabrous.
Caespitose perennial; culms up to 100 cm high.
