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Spikelets 3–6 × 1–2 mm, oblong, laterally compressed, 5–14-flowered, the lemmas disarticulating from below upwards, the rhachilla persistent; glumes subequal, 1.1–1.5 mm long, reaching ± to the middle of the adjacent lemmas, keeled, lanceolate in profile, smooth or scaberulous, acuminate at the apex; lemmas 1.3–1.6 mm long, keeled, narrowly ovate in profile, membranous with obscure lateral nerves, diverging from the rhachilla at 45°, those in opposite rows not imbricate, the rhachilla visible between them, light green to almost black, smooth or scaberulous, acute at the apex; palea persistent, glabrous on the flanks, the keels slender, wingless, scaberulous; anthers 3, 0.3–0.5 mm long.
Caespitose annual; culms up to 60 cm tall, erect or ascending, branched or unbranched, glabrous at the nodes, eglandular or rarely with glandular patches below the nodes, these sometimes coalescent into a ring; leaf sheaths glabrous or thinly pilose; ligule a line of hairs; leaf laminas 2–20 cm × 2–5 mm, linear, flat, glabrous, eglandular.
Panicle 3–35 cm long, ovate-elliptic, untidily diffuse, the spikelets evenly distributed on slender pedicels 2–12 mm long, the primary branches solitary, paired or the lowermost whorled, terminating in a fertile spikelet, glabrous in the axils, eglandular.
Caryopsis c. 0.5 mm long, broadly oblong.
Slender annual 30–60 cm. high.
