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Taiwan Gramineae | Family List | Poaceae | Pennisetum

Pennisetum alopecuroides (L.) Spreng., Syst. Veg. 1: 303. 1825; Hsu, Fl. Taiwan 5: 590, pl. 1442.1978.

狼尾草

Pennisetum alopecuroides
leaf cs section-2

Credit: cs kuoh

Panicum alopecuroideum L., Sp. Pl. ed. 2. 82. 1762.

Perennials; clum compressed, stout, tufted, 50-100 cm tall. Blade coriaceous, 30-60 cm long, 5-8 mm wide, often involute farinose; sheath glabrous, marging ciliate; ligule a ring of hairs, ca. 0.5 mm long. Panicle spike-like, cylindrical, 10-15 cm long, main axis hairy; sterile branches forming bristles and subtending spikelet, these falling off with spikelet; pedicel 2-3mm long. Spikelets ca. 7 mm long, lanceolate or broadly lanceolate, acute; glumes more or less hardened; lower glume minute; upper glume 1/2 as long as spikelet, narrowly oblong, acute; lower lemma and upper lemma equal in length, acute, broadly lanceolate; upper lemma hyaline.

TAIPEI: Yangmingshan, Kuoh 2285. MIAOLI: Shenghsin, Hsu 1351. TAICHUNG: Taichung, Suzuki s. n. NANTOU: Chingshuikou, Huang 275. CHIAYI: Houtapu, Sasaki s. n.

Myanmar, Malesia, Australia, Polynesia, China and Japan. Taiwan, common on sunny hillsides, raodsides and rice fields.

midrib 中肋: (la)large:several vascular bundles

leaf surface 表面: (mix)mixed type with variable surface nodules

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 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: 4

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: 78 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


 

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