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Taiwan Gramineae | Family List | Poaceae | Cynodon

Cynodon dactylon (L.) Pers., Syn. Pl. l: 85. 1805. Hsu, Fl. Taiwan 5: 462. 1978; Koyama, Grass. Jap. Neighb. Reg. 279. 1987.

狗牙根

Cynodon dactylon

Spikelets usually 1-flowered, sessile, imbricate in 2 rows on one side of the axis, ovate-oblong, much compressed, about 2 mm long, breaking up at maturity above the glumes, purplish or green; glumes more or less persistent, equal or slightly unequal, narrow, pointed, keeled, 1-nerved, 1.5 mm long, membranous; lemma as long as the spikelet, boat-shaped, blunt, keeled, 3-nerved, firm, densely and minutely hairy on the keel; palea as long as the lemma, 2-keeled; anthers 3, up to 1 mm long. Caryopsis tightly enclosed between the hardened lemma and palea.

TAIPEI: Taipei, Kao 3440; Hsintien, Hsu 122. MIAOLI: Chunan, Hsu 43820. TAICHUNG: Taichung, DeVol 7082. CHANGHUA: Hsintzuoh, Kuoh et a1. 84. YUNLIN: Suhwu, Wang 20147. TAINAN: Anping, Wang 20156; Hsinhua, Hsu 184* PINGTUNG: Ssuchunghsi, Hsu 11 73. TAITUNG: Tawu, Hsu 1031; Malan, Hsu 992.

This grass has an extremely wide distribution, being found in all warm countries and even persisting in colder climates.

leaf surface 表面: (fla)flat surface

sclerenchyma 厚壁組織: (boscl)(bostr)on both sides of veins as
strand or girder

chlorenchyma 葉綠組織: (radia)cells radiate and lesser 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

no small vein under buliform cells泡狀細胞下無小脈: (bcfan)bulliform cell with colorless cells
extend beneath it

chlorenchyma cell number between two adjacent veins: 2

chloroplast form in bundle sheath 束鞘細胞內之葉綠體型式: (inn)large amount and in centripetal site

mestome sheath 內束鞘細胞: (Xyms+)metaxylem pole adjacent with
mestome sheath

distance between two adjancent vein 脈間距: 114 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: lobed


 

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