Pedicelled spikelet narrowly oblong, 3–5 mm long, green or purplish, not areolate, the lateral keels of the inferior glume and the median keel of the superior glume narrowly winged; pedicel a little shorter than the internode.
Sessile spikelet broadly elliptic; inferior glume 2.5–4 mm long, sharply inflexed at the sides, strongly areolate on the back, pallid, with narrow wings on either side of the apex.
Perennial, arising from a short scaly rhizome; culms up to 120 cm high.
Leaf laminas 16–60 cm × 3–10 mm, gradually tapering to a flexuous apex.
Racemes 5–12 cm long, slightly compressed.