Annual; culms slender, 60–80 cm. long, erect or decumbent and often rooting at the lower nodes.. Leaf-blades linear-lanceolate, 10–18 cm. long, 7–10 mm. wide, cordate at the base, dark green, subglabrous, antrorsely scabrid above, acuminate.. Panicle narrowly oblong, 25–40 cm. long, sparsely branched, the primary branches long, ascending or appressed to the axis, secondary branches short.. Spikelets ovate-oblong, (1.5–)2 mm. long, glabrous, acute; lower glume narrowly ovate, 1/4 the length of the spikelet, 3-nerved; upper glume ovate, 1/3–1/2 the length of the spikelet, exposing the back of the upper lemma, 3-nerved, obtuse; lower lemma 5-nerved, sterile, its palea absent; upper lemma ovate, tessellate, with a small greenish beak.
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