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Taiwan Gramineae | Family List | Poaceae | Setaria

Setaria viridis (L.) P. Beauv., Ess. Agrostogr. 51. 1812; Hsu, Fl. Taiwan 5: 608, pl. 1450. 1978.

狗尾草

Setaria viridis
drawing

Credit: CC Hsu

Panicum viride L., Syst. Nat. ed. 10. 2: 870. 1759.
Panicum pachystachys Franch & Sav., Enum. Pl. Jap. 2: 161. 1876.
Setaria viridis (L.) P. Beauv. var. pachystachys (Franch. & Sav.) Makino & Nemoto, Fl. Jap. 1499. 1925; Hsu, Fl. Taiwan 5: 608. 1978.

Annuals; clum glabrous, geniculate, 40-80 cm tall. Blade broadly linear, 5-20 cm long, 2-18 mm wide; sheath ciliate on margins; ligule a ring of hairs, ca. 1.5 mm long. Panicle contracted, spike-like, cylindrical, 3-6 cm long; axils pubescent; sterile branches forming bristles subtending spikelet. Spikelets 2-2.5 mm long, 0.8-1 mm wide; elliptic, usually obtuse; lower glume 3-veined, ovate, ca. 1/3 as long as spikelet; upper glume 5-veined, equaling spikelet or shorter; lower lemma 5-veined, enclosing a small, narrow, lower palea; upper lemma oblong, obtuse, obscurely rugose, finely punctate. Anthers ca.0.7 mm long.

ILAN: Lotung, Kuoh 1716. TAIPEI: Jungiianyan, Hsu 50; Tamsui, Hsu 194. TAICHUNG: Tatushan, Hsu 10767. CHANGHU: Wanggong, Guo et al. 31. PENGHU: Shiyai, Hsu & Kuoh 1403. PINGTUNG: Nanjenshan, Huang 9516. TAITUNG: Lanyu Is., Keng 438; Lutao Is., Kawakami & Nakahara 3426.

Widely distributed in the Old World. Taiwan, in sandy seahsores.

leaf surface 表面: (fla)flat surface

sclerenchyma 厚壁組織: (mistr)strand variable with size of 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 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: 2

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
outer bundle sheath

distance between two adjancent vein 脈間距: 94 micrometer


 

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