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Taiwan Gramineae | Family List | Poaceae | Digitaria

Digitaria sericea (Honda) Honda, J. Fac. Sci. Univ. Tokyo, Sect. 3, Bot. 3: 298. 1930; Hsu, Fl. Taiwan 5: 548. 1978.


Digitaria sericea
leaf cs section

Credit: cs kuoh

Syntherisma sericea Honda, Bot. Mag. (Tokyo) 38: 127. 1924.

Annuals; cume tufted, 30-50 cm high. Blade linear-lanceolate, 4-8 cm long, 3-6 mm wide, villous; sheath short, loose, hirsute; ligule dry and membranaceous, obtuse, ca. 2 mm long, glabrous. Inflorescence in digitate racemes, racemes 2-5. Spikelets ovoid-lanceolate, acute, 3-4 mm long, pilose; lower glume minute, reduced into a point of ca. 0.3 mm long, veinless; upper glume obtuse, lanceolate, ca. 2.7 mm long, 3-veined, long pilose; lower lemma acute, lanceolate, ca. 3 mm long, 5-7-viened, pilose; upper lemma slightly shorter than lower lemma, acuminate, slightly coriaceous, margins incolute, glabrous; anther ca. 1.3 mm long.

HSINCHU: Nanliao, Chuang 2563. TAITUNG: Tawu, Hsu 1035.

Endemic to Taiwan, in sandy littoral areas.

midrib 中肋: (la)large:several vascular bundles

leaf surface 表面: (fla)flat surface

sclerenchyma 厚壁組織: (ecstr)strand enclosed by colorless cells
and epidermis

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: (smreg)epidermal cells gradually enlarge
from vein to intervein

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: 82 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: non -lobed


Related Objects Image Gallery 
  • drawing (CC Hsu)
  • Image/JPEG
  • leaf cs section (cs kuoh)
  • Image/JPEG

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