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Taiwan Gramineae | Family List | Poaceae | Echinochloa

Echinochloa colona (L.) Link, Hort. Berol. 2: 209. 1833; Hsu, Fl. Taiwan 5: 552. 1978.

芒稷

Echinochloa colona
drawing

Credit: CC Hsu

Panicum colonum L., Syst. Nat. ed. 10. 2: 870. 1759.

Annuals; culm glabrous, 20-80 cm long, decumbent, branched from basal nodes. Blade 6-15 cm long, 3-8 mm wide, margins scabrous; sheath slightly keeled, shorter than internode; ligule absent. Panicle 5-15 cm long, racemes distantly spaced on central axis, 1-2 cm long. Spikelets hispid, 2-3 mm long, awnless or minutely awned; glumes and lower lemma glabrous to scabrous-pubescent, veins scabroushispid; lower glume 1/3 to 1/2 as long as spikelet, 3-veind; upper glume subequal to lower lemma, mucronate to awn-pointed, 5-veined, flattened abaxially, enclosing a hyaline palea of equal length; upper lemma rounded abaxially, smooth and shining; anther ca. 0.8 mm long.

TAIPEI: Taipei, Hsu 15. MIAOLI: Tapu, Hsu 482. TAICHUNG: Kukuan, Hsu 693. YUNLIN: Taishi, Hsu 694. CHIAYI: Chiayi, Shimada s. n. TAINAN: Tainan, Kao 288. KAOHSIUNG: Chiuchitang, Chuang 1534. PENGHU: Tungliang, Cheng s. n. PINGTUNG: Fangliao, Hsu 498. TAITUNG: Lutao Is., Sasaki s. n.

Tropical Asia and Africa. Taiwan, common in roadside, abonded fields and ochards.

leaf surface 表面: (fla)flat surface

sclerenchyma 厚壁組織: (noscl)no except large vein

chlorenchyma 葉綠組織: (radia)cells radiate and lesser than
bundle sheath cell in width

bundle sheath 維管束鞘: (sk)single bundle sheath with
conspicuous chloroplast

buliform cells not well developed 泡狀細胞不發達: (irreg)epidermal cells irregular in size

chlorenchyma cell number between two adjacent veins: 2

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

mestome sheath 內束鞘細胞: (Xyms -)metaxylem pole adjacent with
outer bundle sheath

distance between two adjancent vein 脈間距: 85 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


 

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