Panicum semialatum R. Br., Prodr. 192. 1810.
Perennials; culm densely tufted, rhizome present, erect, 30-60 cm tall, more or less pubescent below
inflorescence, base thickly clothed with woolly remains of old sheath of leaf; ligule membranaceous,
fringed, ca. 0.4 mm long. Blades linear, 10-30 cm long, 3-7 mm wide. Racemes mostly 2, sometimes 3
or 4, 3-13 cm long, subdigitately arranged; rachis slender, villous, 3-angled. Spikelets pedicellate, usually
paired on one side, ovate-lanceolate, 5-7 mm long, pale or brownish; lower glume ca. 1/2 as long as
spikelet, 3-veined, mucronate or awn-tipped; upper glume 5-veined, widely winged, awn-tipped,
densely ciliate, hairs finally widely spreading along margins; lower lemma as long as upper glume but
slightly firmer, awnless, often sparingly ciliolate along margins, enclosing a short hyaline, cleft palea;
upper lemma dark purple or brown, glossy, beraring an awn as much as 3 mm long, margins ciliolate.
HSINCHU: Hsinchu, Hsu 1304. MIAOLI: Neima, Yamamoto et al. 42. Toufeng, Hsu 5299. TAINAN: Liuchia,
Inoue s. n.
The Himalayas, India, Myanmar, China, Australia and Tropical Africa. Taiwan, in exposed red soil hillsides.
midrib 中肋: (no)not conspicuous
leaf surface 表面: (sha)upper surface with shallow notch between the veins
sclerenchyma 厚壁組織: (boscl)(bostr)on both sides of veins as strand or girder
chlorenchyma 葉綠組織: (inrad)somewhat radiate and equal or slightly large than bundle sheath cell in width
bundle sheath 維管束鞘: (dki)two bundle sheaths the inner one with conspicuous chloroplast
buliform cells well developed 泡狀細胞發達: mainly appear in adaxial side
with small vein under buliform cells泡狀細胞下有小脈: (fansh)bulliform set shell-shaped or fan -shaped
chlorenchyma cell number between two adjacent veins: 1
chloroplast form in bundle sheath 束鞘細胞內之葉綠體型式: (per)large amount and in peripheral site
mestome sheath 內束鞘細胞: (Xyms -)metaxylem pole adjacent with outer bundle sheath
distance between two adjancent vein 脈間距: 70 micrometer
length/weidth ratio of bundle sheath in LS 束鞘細胞縱面長寬比: 1
chlorenchyma cell shape in LS 葉綠細胞縱面形狀: non -lobed
