Tufted annual 60–100 cm. high, rarely more;
Lateral panicles solitary, erect, scarcely exserted
Annual, without rhizome. Culms 0.20-0.60 m tall, glabrous. Laminas 2-7 mm broad, glabrous, scabrid on margins and ribs: sheaths glabrescent except near mouths where villous; mouths truncate or with ligule 1-2 mm long. Inflorescence with terminal panicle 25-50 mm long, smaller lateral panicles single at 1-3 nodes, shortly exserted from sheaths. Bracts foliaceous, exceeding panicles. Male spikeleis sessile or shortly pedicillate, 4-5 mm long; glumes castaneous, glabrous. Female glumes castaneous or dark brown distally, paler proximally, with green midrib excurrent into an awn c. 1 mm long, glabrous. Achene. Ovoid, 3-4 x 2-2.5 mm, alveolate lacunose proximally, smooth distally, grey. Hypogynium obtusely trilobed, stramineous.