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Taiwan Gramineae | Family List | Poaceae | Sporobolus

Sporobolus indicus var. flaccidus (R. & S.) Veldk., Blumea 35:433. 1991.

雙蕊鼠尾粟

Sporobolus indicus var. flaccidus
leaf cs section

Credit: cs kuoh

Sporobolus diander (Retz.) Beauv., Ess. Agrost. 26, 147, 178, 1812; Hsu, Fl. Taiwan 5: 501. 1978; Koyama, Grass. Jap. Neighb. Reg. 275. 1987.

Culm tufted. Blade linear, needle-like at the apex, 1.5 mm wide, margins covered with tubercled hairs, especially on the sheath-mouth and margins; ligule chartaceous, upper part ciliate on back. Inflorescence a long contracted panicle, about 25 cm long. Spikelets 1-flowered, about 1.6 mm long; glumes chartaceous; the lower about 0.6 mm long, oblong, nerveless; the upper lanceolate, 1-nerved, 2 times the length of the lower; lemma chartaceous, lanceolate, boat-shaped, about 1.6 mm nerveless; palea chartaceous, upper margins membranous, elliptical, about 1.4 mm long, nerves inconspicuous. Fruit an utricle, about 0.8 mm long, rectangular in cross-section; embryo 1/2 the length of the utricle.

TAIPEI: Taipei, Kira s. n. Oct. 5, 1929. ILAN: Chiaochi, Hsu 825. TAOYUAN: Hsu 1222. NANTOU: Nantou, Puli, Masamune & Sasaki 4456. * CHIAYI: Chiayi, Wang 20006. YUNLIN: Huwei, Hsu 470. TAINAN: Chiali, Morimoto 265. KAOHSIUNG: Chiwei, Mori 7479. PINGTUNG: Oluanpi, Hsu 519; Fangliao, Hsu 497. TAITUNG: Taitung, yamamoto 3582; Chihpen, Koyama 13081. HUALIEN: Yuli, Suzuki 5327.

Very commonly distributed in India Burma, Ceylon and extending to Cchina, and Australia.

This is one of the common grasses growing on hill and plain abundant in the southern parts of the Island.

midrib 中肋: (no)not conspicuous

leaf surface 表面: (sha)upper surface with shallow 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: (radia)cells radiate and lesser than
bundle sheath cell in width

bundle sheath 維管束鞘: (dko)two bundle sheaths the outer 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: 3

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

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

distance between two adjancent vein 脈間距: 110 micrometer

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

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


 

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

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