Annuals or biennials, slender, erect, caespitose. Flowering culms 15–80 cm high. Leaves: basal leaf sheath margins glabrous; ligule a fringe of hairs, 0.5–1 mm long; blade flat (occasionally folded or rolled when dry), linear, 1.5–20 cm long, 3–5 mm wide, with sparsely scaberulous margins. Inflorescences paniculate, irregular, contracted and spiciform, 3–18 cm long; primary branches whorled at the lowermost panicle node, not all whorled, equalling or longer than adjacent internodes, spreading, with spikelets concentrated at the branch apices and in clusters. Spikelets subsessile or pedicellate, 1–2 mm long; pedicel 1–2 mm long. Glumes lanceolate; lower glume 0.25–0.5 mm long, acute, without nerves; upper glume at least half spikelet length, 0.5–1.5 mm long. Lemma elliptic, 1–2 mm long, acuminate, 1-nerved, pubescent. Palea subequal to lemma, entire. Anthers 3, 0.2–0.4 mm long. Grain elliptic or obovate, quadrangular, to 0.8 mm long, to 0.5 mm wide, to 0.3 mm thick, honeycombed, pale brown. Embryo ±half as long as grain.
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A tufted grass. It keeps growing from year to year. It grows 15-50 cm high. Tufts can be 60 cm across. The leaf blades are flat. They are 3-6 cm long and 3-6 mm wide. The edges are rough and hairy. The inflorescence is a pyramid shaped panicle. It is 5-15 cm long.
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