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Taiwan Gramineae | Family List | Poaceae | Polypogon

Polypogon fugax Nees ex Steud., Syn. Pl. Glumac. 1: 184. 1854. Hsu, Fl. Taiwan 5: 4215. 1978; Koyama, Grass. Jap. Neighb. Reg. 167. 1987.


Polypogon fugax

Credit: cs kuoh

Annuals; culms tufted, geniculate, 4-5-noded; 20-60 cm tall, 1 mm in diameter. Blades linear,5-15 cm long, 3-7 mm wide; ligule 3-6 mm long, apex fringed. Panicle oblong. Spikelets 1-flowered, oblong-elliptical, 2-2.5 mm long; glumes subequal, lance-oblong, membranous, scabrous, rounded on back, apex sinus; awn arising between the lobes, 1.5-2 mm long, slender, straight. Lemma 0.8-1 mm long, elliptic, apex subobtuse, toothed, the midnerve projecting beyond the lemma in a short awn. Palea slight ly shorter than the lemma, apex toothed. Anthers 0.5 mm long. Caryopsis eliptic, 1 mm long.

TAIPEI: N.T. U. campus, Hsu & Kao 156; Keelung, Hsu 589. TAICHUNG: Pahsienshan, Hsu 430. CHANGHUA: Lukang, Kuoh 1628. HUALIEN: Luangshan, Hsu s. n. Aug. 17, 1967.

Distributed in Japan, Korea, China, India and Africa.

This is a very common grass growing on the plain and lowland regions in Taiwan.

leaf surface 表面: (mid)upper surface with middle 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: (homog)homogenous sponge tissue

bundle sheath 維管束鞘: (nks)bundle sheaths with
small amount of 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: (fanfu)bulliform set fan shaped,
cells similar in size

chlorenchyma cell number between two adjacent veins: 13

chloroplast form in bundle sheath 束鞘細胞內之葉綠體型式: (lit)with a little of chloroplast

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

distance between two adjancent vein 脈間距: 234 micrometer

length/weidth ratio of bundle sheath in LS 束鞘細胞縱面長寬比: 6

chlorenchyma cell shape in LS 葉綠細胞縱面形狀: non -lobed


Related Objects Image Gallery 
  • leaf cs section (cs kuoh)
  • Image/JPEG
  • specimen (cs kuoh)
  • Image/JPEG
  • Image/GIF (CC Hsu, 1975 Taiwan Grasses)
  • Image/GIF

    Flora of China  
  • Illustration
  • Illustration
    Flora of Pakistan  
  • Illustration (D.E.)
  • Illustration

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