Perennial, with long slender stolons, forming large mats. Culms erect, up to 20 cm tall, sometimes branched at base. Leaf sheaths glabrous, pilose at mouth with 1–2 mm hairs, basal sheaths persistent; leaf blades aggregated toward culm base, linear-lanceolate, flat or margins involute, tough, patent, 2.5–6 cm, 2–4 mm wide, abaxial surface subglabrous, adaxial surface thinly pilose, apex pungent. Inflorescence linear-elliptic, 2–4 × 0.3–0.5 cm, long exserted above leaves; spikelets many, loosely overlapping; pedicels slender, slightly flexuous, longer than spikelet, up to 5 mm. Spikelets 2.5–3.5 × 1–1.5 mm, yellowish green becoming purplish brown; lower glume absent; upper glume obliquely ovate, obscurely 5–7-veined, upper margins broad, papery, apex obtuse, sometimes mucronate; lemma boat-shaped, slightly shorter than glume, 1-veined; palea absent. Anthers ca. 1.5 mm. Caryopsis 1.5–2 mm. Fl. and fr. May–Aug. 2n = 40.
"Plants with shallow rhizomes, forming a dense turf, growing vigorously in hot sun, but early becoming brown and dormant; lvs flat, 3–10 cm × 2–5 mm; infls 2–4 cm, arising only (or scarcely) ca 1 dm above the ground; spikelets 3–3.5 mm, pale purplish-brown; 2n=40. Native of e. Asia, cult. in warm temperate regions as a lawngrass, casuallyescaped mainly in the s. part of our range."