Inferior glume 1/2 as long as spikelet, glabrous to pubescent, obtuse to acute.
Panicle 5–30 cm. long, contracted, the branches glabrous to villous.
Palea keels winged to midway, the wing terminating in an auricle.
Leaf laminae 2–15 mm. wide, one margin crinkly.
Inferior lemma 5–7-nerved.
Spikelets 7–14 mm. long.
Culms 30–140 cm. high.
Tufted perennial.