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Taiwan Gramineae | Family List | Poaceae | Lophatherum

Lophatherum gracile Brongn


Lophatherum gracile
leaf cs section

Credit: cs kuoh

Loosely tufted perennial with short knotty rhizome; roots forming spindle-shaped storage enlargements. Culms tufted, erect. Blades lanceolate, petiolae, tessellate veined, covered with long hairs; ligule 0.5 mm long, backside hispid. Panicle loose, outline elliptic, 15-30 cm long, branches 1-3-nate, patent. Spikelets 1 perfect and 3-7 neutral florets, terete, 8.5 mm long, sessile; glumes subcoriaceaous, tessellate nerved; lower glume 4.5 mm long, 5-nerved, apex acute; upper glume 5 mm long, 7-nerved, apex rounded, siliceos, lemma subcoriaceous, 5-5.6 mm long apex obtuse, siliceous, 7-9-nerved, shorlty awned; palea hyaline, lanceolate, 2-keeled, 5-5.5 mm long. Caryopsis 3.5 mm long.

TAIPEI: Yangti, Kuo 1580. TAICHUNG: Kankoutzu, Kao 30163. TAITUNG: Botel Tobago, Fukuyama 136, Hsu 12330; Green island, s.n. Oct. 28. 1934.

Distributed in Japan, central and southern China, India, Malaysia, and Indo-China.

A common forest grass on dry ground in lowland to median elevation of Taiwan.

midrib 中肋: (la)large:several vascular bundles

leaf surface 表面: (fla)flat surface

sclerenchyma 厚壁組織: (boscl)(bostr)on both sides of veins as
strand or girder

chlorenchyma 葉綠組織: (palis)differentiate to palisade and
sponge tissue

bundle sheath 維管束鞘: (nke)bundle sheaths without 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: 17

chloroplast form in bundle sheath 束鞘細胞內之葉綠體型式: (not)no chloroplast

mestome sheath 內束鞘細胞: (Xyms+)metaxylem pole adjacent with
mestome sheath

distance between two adjancent vein 脈間距: 450 micrometer

length/weidth ratio of bundle sheath in LS 束鞘細胞縱面長寬比: 4


Related Objects Image Gallery 
  • Image/JPEG (dry specimen cs kuoh)
  • Image/JPEG
  • leaf cs section (cs kuoh)
  • Image/JPEG
  • Image/GIF (CC Hsu, 1975 Taiwan Grasses)
  • Image/GIF

    Flora of China  
  • Illustration
  • Illustration

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