Annuals; culm to 1 m high or more, decumbent, branching and rooting at lower nodes. Blade 5-15
cm, rarely to 30 cm long, 5-10 mm wide, scabrous and undulate on margins; sheath mostly shorter than
internode, often papillose-pilose; ligule 2-4 mm long, membranaceous. Inflorescence in digitate
racemes, racemes 6-15, 7-14 cm long; rachis ridged, scabrous on wing-margins, ca. 0.6 mm wide;
pedicel ridged or norrowly winged. Spikelet more or less pubescent, lanceolate-elliptic, 2.5-3 mm long;
lower glume absent or reduced to a minute veinless scale; lower lemma equaling or slightly exceeding
upper lemma, 5-7-veined; upper lemma slightly coriaceous, pale.
ILAN: Chiaochi, Hsu 823. TAIPEI: Chinshan, Hsu 1294; Fulung, Hsu 902. TAOYUAN: Neili, Hsu 1246.
MIAOLI: Senghsin, Hsu 1358. NANTOU: Kauntaochi, Hsu 4228; Puli, Hsu 1373. YUNLIN: Huwei, Kao 272.
TAINAN: Hsinhua, Hsu 701. KAOHSIUNG: Chishan, Suzuki 5735. PINGTUNG: Chungluan, Hsu 744. TAITUNG:
Chihpen, Hsu 1000; Lutao Is., Suzuki 380304.
Tropical Asia. Taiwan, in open waste places throughout the Island.
midrib 中肋: (la)large:several vascular bundles
leaf surface 表面: (fla)flat surface
sclerenchyma 厚壁組織: (ecstr)strand enclosed by colorless cells and epidermis
chlorenchyma 葉綠組織: (radia)cells radiate and lesser than bundle sheath cell in width
bundle sheath 維管束鞘: (sk)single bundle sheath with conspicuous chloroplast
buliform cells not well developed 泡狀細胞不發達: (smreg)epidermal cells gradually enlarge from vein to intervein
chlorenchyma cell number between two adjacent veins: 3
chloroplast form in bundle sheath 束鞘細胞內之葉綠體型式: (out)large amount and in centrifugal site
mestome sheath 內束鞘細胞: (Xyms -)metaxylem pole adjacent with outer bundle sheath
distance between two adjancent vein 脈間距: 94 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: non -lobed
