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Taiwan Gramineae | Family List | Poaceae | Enteropogon

Enteropogon dolichostachyus (Lag.) Keng, Clav. Gram. Prin. Sinicarum. 197. 1957. Hsu, Fl. Taiwan 5: 466. 1978.

腸鬚草

Enteropogon dolichostachyus
leaf cs section

Credit: cs kuoh

Chloris dolichostachya Lagasca, Gen. et Sp. Pl. 5. 1816.
Chloris incompleta Roth, Nov. Pl. Sp. 60. 1821; Honda, Monogr. Poac. lap. 156. 1930.

Culm tufted, up to 2 m tall. Blade linear, 30 cm long or more, 0.5-1 rnm s wide, midrib white, conspicuous, surface loosely glandular hairy; ligule about 0.5 mm long, fimbriate; sheath-margins hairy. Inflorescence digitately arranged spikes, these about 15 cm long. Spikelets 2-flowered, about 5 mm long; glumes chartaceous, deltoid-lanceolate, acute and aristate, conspicuously 1-nerved; the lower glume 1/2 as long as the upper; lemma purplish, subcoriaceous, siliceous, broadly lanceolate, about 5 mm long, margins inrolled, 3-nerved, 2-toothed, midrib protruding into an awn, nearly as long as the lemma; palea linear, 2-keeled, upper margin siliceous, with the same texture and length as the lemma; upper floret reduced into a sterile lemma. Caryopsis about 3.5 mm long; embryo 1/2 the length of the caryopsis.

TAINAN: Hsinhua, Hsu & Wang 10439*. KAOHSIUNG: Chiuchitang, Hsu 1554; Chishan, Hsu & Mizushima 5045. PINGTUNG: Kenting, Hibino & Suzuki 12531.

Distributed from Afghanistan through India to South-east Asia and South China.

Locally this species is found only in southern Taiwan.

midrib 中肋: (la)large:several vascular bundles

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: (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: (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: 105 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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  • leaf cs section (cs kuoh)
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  • Image/GIF (CC Hsu, 1975 Taiwan Grasses)
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