Milium effusum L., Sp. Pl. !:61. 1753. Hsu, Fl. Taiwan 5: 454. 1978; Koyama, Grass. Jap. Neighb. Reg.216. 1987.
Perennial loosely tufted or solitary with slender rhizome. Culms 60-160 cm tall, 1-3 mm in diameter. Blades broadly linear-lanceolate, 10-20 cm long, 5-15 mm wide, soft, glabrous; ligule membranous, tongue-shaped, 5-10 mm long. Panicle loose, open, up to 20 cm long, branches 4-8-nate, whorled. Spikelets 1-flowered, 3 mm long, elliptical; glumes equal, 3 mm long, broadly lanceolate, chartaceous, 3-nerved; lemmas elliptical, 2.5 mm long, weakly 5-nerved, coriaceous, margins inrolled, enclosing the palea; palea oblong, 2.5 mm long, faintly 2-nerved, coricaceous. Caryopsis elliptical, 2 mm long.
NANTOU: Yuchu, Hsu & Huang 6604.
Widely distributed in Europe and Asia.