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Taiwan Gramineae | Family List | Poaceae | Digitaria

Digitaria radicosa var. radicosa (Honda) C. C. Hsu


Digitaria radicosa var. radicosa
leaf cs section

Credit: cs kuoh

Annuals; culm base prostrate, branching, mostly less than 25 cm high, glabrous. Blades 5-8 cm long, 2.5-6 mm wide; sheath glabrous, shorter than internode; ligule 1-1.5 mm long, membranaceous. Inflorescence subcontracted with 2-3 digitate racemes, racemes 4-9 cm long, slender; rachis 0.6 mm wide, winged, entire or minutely serrulate. Spikelets narrowly lanceolate, 2.8-3 mm long, ca. 1 mm wide, with unequal scabrid triangular pedicels; lower glume minute but distinct, veinless, ca. 0.3 mm long; upper glume membranaceous, narrow, 3-veined, villous near margins, 2/3-3/5 as long as spikelet; lower lemma as long as spikelet, lanceolate, membranaceous, 7-veined, villous; upper lemma coriaceous, lanceolate, pale, as long as lower lemma.

TAIPEI: Wulai, Hsu 80. HSINCHU: Kuangchi, Kuoh s. n. MIAOLI: Suitaoshan, Hsu 654. PINGTUNG: Kenting, Hsu 1099. TAITUNG: Ansuo, Hsu 1071. HUALIEN: Mataian, Suzuki 5220.

Southeastern Asia, China and Polynesia. Taiwan, in open sandy places,.

midrib 中肋: (sm)small:with one vascular bundle

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: (homog)homogenous sponge tissue

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: (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: 52 micrometer

length/weidth ratio of bundle sheath in LS 束鞘細胞縱面長寬比: 3

chlorenchyma cell shape in LS 葉綠細胞縱面形狀: non -lobed


Related Objects  
  • leaf cs section (cs kuoh)
  • Image/JPEG

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