Loosely tufted annual; culms 10–50 cm. high, erect or ascending.. Leaf-blades broadly linear, 2–14 cm. long, 3–7 mm. wide, the margins pectinate-ciliate towards the base.. Panicle ovate, 3–12 cm. long; primary branches in whorls, spreading.. Spikelets 1–1.2 mm. long, glabrous or scaberulous, greyish green; lower glume a tiny ovate to oblong scale up to 0.2 mm. long (rarely more), or suppressed; upper glume oblong-elliptic, as long as the spikelet; lemma similar to the upper glume or a little shorter; anthers 2, 0.3–0.6 mm. long.. Grain obovate, 0.7–0.8 mm. long.