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Perennial, tufted, up to 0.9 m high. Leaf blades 100-200 mm long, up to 3 mm wide. Spikelets 10-15 mm long. Panicle 40-80 mm long, spikelike and dense; lower glume obtuse, with 2 rows of tubercles; upper glume and lower lemma usually glabrous; callus of female-fertile (upper) floret 2-toothed.
Inferior glume glabrous or with a line of tubercle-based setae on either flank, acute.
Culms 50–120 cm. high, juncoid, the nodes scarcely differentiated.
Callus 1–1.5 mm. long, linear, pungent or obliquely 2-toothed.
Tufted perennial, the basal sheaths sometimes fibrous.
Superior lemma bidenticulate; awn 3–7 cm. long.
Panicle 4–14 cm. long, spiciform.
Spikelets 12–18 mm. long.
Stamens 2.
