Tall reed. Ligule 0.3 mm long, upper margin fimbriate, blade up to 1 cm wide. Panicle large, dense. Spikelets several-flowered, 12 mm long; glumes lanceolate, chartaceous; the lower 3-4 mm long, 1-nerved, apex rounded, base attenuate; the upper 4-5 mm long, 3-nerved; lemma 5-10 mm long, chartaceous, 3-nerved, lanceolate, glabrous; callus elongated with silky hairs; palea 3 mm long, 2-keeled, margins minutely ciliate, apex truncate.

TAIPEI: Tachu, Chang 2991 ; Kuanyingshan, Hsu 1154. TAICHUNG: Kukuan, Hsu 453 . NANTOU: Sun Moon Lake, Suzuki s.n. Sept. 18, 1929.. TAINAN: Anping, Hsu 616. KAOHSIUNG: Liukuei, Suzuki s.n. Oct. 31, 1934 . TAITUNG: Ansou, Hsu 1039. HUALIEN: Yuli, Suzuki 5329.

India, Burma, Malaysia, China, and extening to Australia and Japan.

leaf surface 表面: (sha)upper surface with shallow notch
between the veins

sclerenchyma 厚壁組織: (bIgir)on both sides of some veins
as I-shaped girder

chlorenchyma 葉綠組織: (armed)compact armed cells

bundle sheath 維管束鞘: (nke)bundle sheaths without chloroplast, (nks)bundle sheaths with
small amount of chloroplast

buliform cells well developed 泡狀細胞發達: mainly appear in adaxial side

no small vein under buliform cells泡狀細胞下無小脈: (bcnar)bulliform cell with colorless cells
beneath it in row

chlorenchyma cell number between two adjacent veins: 8

chloroplast form in bundle sheath 束鞘細胞內之葉綠體型式: (lit)with a little of chloroplast

mestome sheath 內束鞘細胞: (Xyms+)metaxylem pole adjacent with
mestome sheath

distance between two adjancent vein 脈間距: 248 micrometer

length/weidth ratio of bundle sheath in LS 束鞘細胞縱面長寬比: 2