Inflorescence of 3–14 widely spaced racemes, these 1–7 cm. long, slender, secund, spreading horizontally or deflexing at maturity, bearing mostly paired spikelets on a triquetrous rhachis.
Inferior glume 1/3–1/2 length of spikelet, separated from the superior by a distinct internode 0.2–0.5 mm. long.
Spikelets 2–3.5 mm. long, glabrous, subacute.
Superior lemma coarsely rugose, subacute.
Culms 10–100 cm. high, ascending.
Annual.