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Taiwan Gramineae | Family List | Poaceae | Alopecurus

Alopecurus aequalis var. amurensis (Komar.) Ohwi in Bot. Mag. Tokyo. 55: 360. 1941. Hsu, Fl. Taiwan 5: 402. 1978; Koyama, Grass. Jap. Neighb. Reg. 201. 1987.

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Alopecurus aequalis var. amurensis
leaf cross section

Credit: cs kuoh

Alopecurus fulvus var. amurensis Komar., Fl. Manshur. in Acata Hort. Petrop. 20: 272. 1901.
Alopecurus geniculatus L., Sp. Pl. 60. 1753, Gen. Pl. ed. 5. 1754; Honda, Monogr. Poac. Jap. 204. 1930.

A small annual; culms usually geniculate; ligule membranous, 2-5 mm long. Panicle cylindrical, contracted, up to 6 cm long. Spikelets 1-flowered, elliptical or oblong, 2-2.5 mm long, flattened, falling entirely at maturity; glumes subequal, 2 mm long, keeled, free nearly to base, narrowly oblong, blulnmt, thin and membranous, 3-nerved, with silky hairs on the keels; lemma sa long as or very slightly shorter than the glumes, keeled, broadly elliptical, very blunt, membranous, 5-nerved, smooth, lower half united, awned from the back just below the middle, with awn included in the glumes or very slightly protruding; palea wanting; anthers 1 mm long. Caryopsis enclosed in the lemma, about 1 mm long.

TAIPEI: Yangminshan, Kao 2502, Taipei, Hsu 4334.TAICHUNG: Lishan, Hsu & Kuoh 7104. NANTOU: Hoshe, Huang 2231A. CHIAYI: Mt. Alishan, Chao & Kao 6206.

Distsributed in temperate regions of the world.

midrib 中肋: (no)not conspicuous

leaf surface 表面: (dee)upper surface with deep notch
between the veins

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

chlorenchyma 葉綠組織: (inrad)somewhat radiate and equal or
slightly large
than bundle sheath cell in width

bundle sheath 維管束鞘: (nke)bundle sheaths without 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: 8

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: 260 micrometer

length/weidth ratio of bundle sheath in LS 束鞘細胞縱面長寬比: 4

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

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Vascular Plant Type Catalog at NYBG: Link


 

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

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