Description from Flora of China
Perennial. Culms densely caespitose, 30–60 cm tall, erect, glabrous. Leaf sheaths usually shorter than internodes; ligules margin ciliate; leaf blades subcoriaceous, 2–5 mm broad, margin involute. Panicle open, 10–15 cm; branches ascending, scabrous, glabrous in axils. Spikelets palely purplish, lanceolate, 5–10 × ca. 2.5 mm, 5–15-flowered, pedicellate; rachilla persistent. Glumes broadly lanceolate, 1-veined, apex acuminate, lower glume 1–1.5 mm, the upper 1.5–1.7 mm. Lemmas ovate, apex acute, minutely punctate, keel scabrous, lateral veins distinct, subparallel. Palea persistent, keels arc-shaped, ciliate-scabrous. Stamens 3; anther oblong, blackish purple, ca. 0.5 mm. Caryopsis elliptical, slightly compressed, obscurely striate.
* Waste places. Taiwan.