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Taiwan Gramineae | Family List | Poaceae | Paspalum

Paspalum thunbergii Kunth ex Steud., Nomencl. Bot. ed. 2. , 2: 273. 1841; Hsu, Fl. Taiwan 5: 588. 1978.

雀稗

Paspalum thunbergii
leaf cs section

Credit: cs kuoh

Perennials; culm tufted, 40-90 cm tall, nodes pilose. Blade linear, pilose, 10-30 cm long, 5-8 mm wide; sheath long, pilose; ligule membranaceous, truncate, 1-2 mm long. Inflorescence of racemose racemes, 5-20 cm long; racecmes 3-5, ridged on main axis, 5-10 cm long, axils of racemes with tuft of hairs; rachis ca. 0.8 mm wide; pedicel short. Spikelets 2.5-2.7 mm long, broadly elliptic or elliptic, rounded or slightly mucronate, sparsely covered with spreading hairs on margins; upper glume and lower lemma similar, 3-veined, membranaceous; upper lemma coriaceous, as long as spikelet, slightly shiny.

TAIPEI: Tatunshan, Sasaki s. n.

China and Japan. Taiwan, in mountainous areas of the northern part.

midrib 中肋: (sm)small:with one vascular bundle

leaf surface 表面: (fla)flat surface

sclerenchyma 厚壁組織: (mistr)strand variable with size of 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

distance between two adjancent vein 脈間距: 68 micrometer

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


 

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