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Taiwan Gramineae | Family List | Poaceae | Sorghum

Sorghum halepense (L.) Pers., Syn. Pl. 1: 101. 1805. Hsu, Fl. Taiwan 5: 695. 1978.


Sorghum halepense
leaf cs section

Credit: cs kuoh

Holcus halepensis L. var. genuinus Honda, Bot. Mag. Tokyo 40: 99. 1926, Monogr. 333. 1930.

Culm erect, solid, 2.5-3 mm in diameter. Blade linear, up to 30 cm long by 8 mm wide, basal part densely covered with silky hairs; ligule about 1.8 mm long, ciliate. Panicle large. Spikelets paired, dimorphic; the upper pedicelled, linear-oblong, 1/2 the width of the sessile spikelet, purplish-black; the lower sessile, broadly lanceolate, about 4 mm long. Glumes coriaceous, as long as the spikelet; the lower broadly lanceolate, 2-keeled, ciliate on the back, 5-7-nerved, tessellate-nerved; the upper lanceolate, boat-shaped, 3-nerved, also tessellate nerved, margins inrolled, membranous, fimbriate and hirsute on the upper back, 1-keeled. Lower floret reduced to a lemma, membranous, as long as the glume, 3-nerved, margins fimbriate. Upper floret membranous; lemma deltoid-lanceolate, about 2 mm long, 1-3-nerved, slightly thickened toward the end of middle nerve; palea linear or irregular, fimbriate on the upper part, about 1.5 mm long; stamens 3; anthers about 1.8 mm long.

TAIPEI: Tapingling, Kao 7470. TAOYUAN: Kuanshan, Hsu & Kuoh 7801. MIAOLI: Tahu, Chen 140. TAINAN: Tainan, Wang 20104. KAOHSIUNG: Kaohsiung, Hsu s. n. June 18, 1968. PINGTUNG: Hengchun, Liu s. n. July 22, 1970.

This grass was introduced at some early period, however, it is now naturalized in waste places. It has been widely cultivated as fodder.

midrib 中肋: (la)large:several vascular bundles

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 well developed 泡狀細胞發達: mainly appear in adaxial side

with small vein under buliform cells泡狀細胞下有小脈: (fansh)bulliform set shell-shaped or fan -shaped

chlorenchyma cell number between two adjacent veins: 2

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
outer bundle sheath

distance between two adjancent vein 脈間距: 126 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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