Tall reed. Rhizome conspicuous. Ligule 1 mm long, upper margin fimbriate, blade 2 cm wide. Panicle large, open. Spikelets usually 3-flowered, 14 mm long; glumes lanceolate, chartaceous, 3-nerved, sometimes tessellate-nerved; the lower 4 mm long; lemma 7-10 mm long, chartaceous, 3-nerved, lanceolate, glabrous; callus elongated with silky hairs; palea 2.5-4 mm long, 2-keeled, margins minutely ciliate, apex truncate.

TAIPEI: Tanshui, Kao 5520; DeVol 7648. MIAOLI: Chunan, Shimada 785c.CHIAYI: Putzu, Wang 20128. TAINAN: Tainan, Wang 20107; Anping, Wang 20159. PINGTUNG: Liukuaitso, Suzuki 5687.

Widely distributed in the northern hemisphere.

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

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: 7

chloroplast form in bundle sheath 束鞘細胞內之葉綠體型式: (not)no chloroplast

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

distance between two adjancent vein 脈間距: 250 micrometer

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

chlorenchyma cell shape in LS 葉綠細胞縱面形狀: lobed