Inferior glume 4/5 length of spikelet, acuminate.
Leaf laminae setaceous, the margins not crinkly.
Palea keels narrowly winged to apex.
Callus cuneate, narrowly obtuse.
Spikelets 8–10 mm. long.
Inferior lemma 5-nerved.
Panicle 6–15 cm. long.
Culms 60–100 cm. high.
Tufted perennial.