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Leaf-laminae (10)12-20(25) x (1.5)2-3.5 (4) cm., oblong-lanceolate to narrowly elliptic-oblong, at the rounded base constricted into a pseudo-petiole of 0.5-1.7 cm. in length, apex acute to acuminate, puberulous to glabrescent on both surfaces, smooth or somewhat scaberulous on the midrib beneath.
Panicle 20-35 x 8-20 cm., ovate or broadly ovate to elliptic in outline; the branches mostly verticillate, spreading or obliquely ascending, slender, somewhat rigid, unbranched, scaberulous.
Leaf-sheaths striate, keeled, truncate and barbate at the mouth, rather tight when young, later somewhat loose and slipping off the culm.
Culms up to 180 cm. high, 6-9-noded, erect, stout, terete, striate, smooth, puberulous but finally glabrescent.
Lemmas 4.5-5 mm. long, decreasing in size towards the apex, obtuse to subacute, dorsally somewhat asperous.
Glumes 5-5.5 mm. long, obtuse to subacute, scaberulous on the keel, asperous on the flanks.
Spikelets 8-12 mm. long, 3-5-flowered, narrowly oblong, greenish.
A robust perennial with a stout horizontally creeping rhizome.
Ligule minutely ciliolate along the upper edge.
Stamens 3; anthers 2-3 mm. long.
Caryopsis unknown.
