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Taiwan Gramineae | Family List | Poaceae | Paspalum

Paspalum commersonii Lam., Tabl. Encycl. 1: 175. 1791; Hsu, Fl. Taiwan 5: 581. 1978.

台灣雀稗

Paspalum commersonii
drawing

Credit: CC Hsu

TAIPEI: Hsinhuatien, Hsu 176. NANTOU: Puli, Hsu 1380. TAITUNG: Lanyu Is., Sasaki s. n.

Tropics and subtropics of the Old World. Taiwan, at plains in moist place.

Perennials; culm tufted, 15-20 cm tall. Blade acuminate, 5-10 cm long, 3-5 mm wide, both surfaces pilose-tomentose; sheath hirsute, compressed, shorter than internode; ligule membranaceous, truncate, ca. 2 mm long. Racemes 2 or more, 2-3 cm long; rachis flattened and winged, 1.5 mm wide. Spikelets in 2-rows, ca. 2 mm long, pubescent-villous; lower glume absent; upper glume membranaceous, 3-5- veined; lower lemma as long as spikelet; lower palea oblong, obtuse, base contracted; upper lemma cartilaginous, obtuse, margins narrowly incurved, indurate; anther ca. 0.8 mm long.

midrib 中肋: (la)large:several vascular bundles

leaf surface 表面: (fla)flat surface

sclerenchyma 厚壁組織: (noscl)no except large vein

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: (irreg)epidermal cells irregular in size

chlorenchyma cell number between two adjacent veins: 2

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


 

Related Objects Image Gallery 
  • drawing (CC Hsu)
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