Culms solitary or tufted, 18–100 cm tall, 2–5-noded, smooth, glabrous, but densely puberulent below spike. Leaf sheath smooth, glabrous but margin ciliate when young; ligule 1–1.5 mm, membranous, apex truncate; leaf blade flat or rolled, 8–30 × 0.4–0.7 cm, abaxial surface scabrous or smooth, adaxial surface scabrous or pubescent, or both surfaces densely pubescent. Spike erect, grayish green, brown, or brownish, (6–)10–15(–24) × 0.1–1.7 cm; rachis pubescent; internodes 3–7(–20) mm. Spikelets (1 or)2 or 3(or 4) per node, 1–2.2 cm, with 2–7 (–10) florets; rachilla pubescent; internodes 1–1.5 mm. Glumes not covering base of first lemma, narrowly lanceolate to nearly subulate, shorter than spikelet, obscurely 1–3-veined, scabrous, apex mucronate to acuminate. Lemma lanceolate, 5-veined, pubescent, or glabrous above middle, margin membranous, apex acuminate or with awn 1–3 mm; first lemma 8–10(–14) mm; callus villous. Palea shorter than or equaling lemma, apex slightly bifid. Anthers 2–4 mm. Fl. and fr. Jun–Oct.
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A grass. It keeps growing from year to year. It can be in tufts. It grow 18-100 cm tall. The leaf blade can be flat or rolled. It is 8-30 cm long by 4-7 mm wide.
It is a temperate plant. It grows in mountain slopes and in stony and alkaline soils between 2,900-4,300 m above sea level. In Sichuan.
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