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Leaf-laminae (5)8-18(22) x 1-2.5 cm., constricted at the base, lanceolate or lanceolate-elliptic (usually broadest about the middle), tapering to an acute apex, with tessellate veins, expanded, glabrous or finely puberulous on both surfaces but usually soon glabrescent, sometimes softly pilose towards the base, asperulous along the margins, vivid green.
Panicle 10-20 x 12-25 cm., circular or broadly elliptic in outline, erect, rigid; main axis slender, obtusely angular, scaberulous, glabrous; branches up to 18 cm. long, solitary, flexuous, simple or few branched; the divisions filiform, asperulous.
Culms up to 85 cm. high 5-7-noded, erect or geniculate-ascending, often straggling, rather weak, terete or somewhat compressed, striate, glabrous, smooth.
Spikelets 1-2.3 x 0.4-0.5 cm., oblong, often somewhat broader at the apex at maturity, bright green.
Leaf-sheaths striate, tight when young, later lax and slipping off the culm, smooth, glabrous.
Glumes ovate-lanceolate to ovate; the inferior 4-5.5 mm. long; the superior 6-8 mm. long.
Caryopsis 2.8-3.1 mm. long, reddish-brown with a green pericap when young.
Lemmas 8-11 mm. long (excluding the awn), ovate; the awn 2.5-4 mm. long.
Pedicels slender, filiform, flexuous, asperulous, up to 5 cm. long.
A caespitose perennial from a creeping rhizome.
Anthers 2-3 mm. long, linear.
Paleas c. 6 mm. long.
