Plant name oak tree Latin name quercus dentata thunb. Alias big-leaf pineapple Families and genera of Fagaceae, Quercus Ma. Morphology of deciduous tree, up to 25m, bark dark gray, wide slit, branchlets thick, with grooves and dense yellow gray stellate hair, large leaves obovate, up to 30cm, wide 20cm, usually the size of the length of 10 - 20cm, width between the 6-13cm, leaf apex obtuse or blunt tip, base of the ear-shaped, wavy leaf margin with 4-10 pairs are separated, leaves hairy, lateral veins 4-10 pairs, petiole very short, long only 2-5mm, densely tomentose; cupule cup-shaped, about 1cm, diameter 1.5-1.8cm, surrounded by nuts about 1 / 2, bracts narrowly lanceolate, brown-red, anti-roll, small nuts, oval to elliptical shape, length 1.5-2.5cm, diameter of about 1.5cm, April-May flowering, fruit ripening September to October. Origin of the distribution main producing areas in northern China, Henan, Hebei, Shandong, Shanxi and other provinces mountain common. Liaoning, Shaanxi, Hunan, Sichuan and other provinces are also distributed. Xiangcheng Ziyun Shan County, Henan Province, on the distribution of oak trees is one of the best-preserved oak trees. Strong positive ecological habits of species, like light, drought, anti-barren, suitable for growing in well-drained sandy loam, in calcareous soil, saline soil and poor growth at low humidity WATERLOGGED. More common in northern mountains at the altitude of 500m below the sunny, deep-rooted trees, bud, sprout ability, long life, there is a strong wind, fire resistance and anti-dust capability, but its growth rate slow. Landscape Uses straight trunk, leaves large, wide crown development, longer life expectancy, yellow and orange autumn leaves do not fall durable, can be solitary plant, sheet plant or mixed with other plant species, seasonal color extremely rich. Breeding mainly cultivated in seed breeding, seed should Sand winter. Other uses solid wood for construction, sleepers, appliances used, also foster mushrooms. Cupule and bark can be put tannin, oak leaves can feed silkworms. After the edible nuts astringent. Belong to similar kinds of 1 white oak (q.aliena blume): branchlets cylindrical, glabrous, light brown lenticels only see the round, long oval-shaped leaves obovate, apex obtuse or shortly acuminate, abaxially densely gray star hair, leaf margin is light wavy blunt teeth, have lateral veins 10-15 pairs, petiole length 1-3cm, glabrous. 2 sharp teeth white oak (var.acuteserrata maxim.): Leaf apex acuminate, serrated leaf margin with a thick, but the teeth sharp and end within the song. Cupule slightly shallow, only surrounded by nuts 1 / 3. 3 Beijing oak (var.pekingensis schoot): leaves small, apex obtuse tip, dorsal glabrous or only sparsely pubescent, lateral veins 7-10 pairs, bell-shaped shell bucket, surrounded by nuts about 1 / 2. 4. Mongolian oak (q.mongolica fisch): Branchlets with edges, glabrous, leaf width is short, tip blunt tip, blunt edge of a shallow 7-10 of coarse tooth, dorsal light green, hairy along the veins only leaves , lateral veins 7-11 pairs, petiole very short, only 2-5mm, glabrous, small cupule bracts triangular-shaped oval, the back verrucose, densely short gray hair. 5 coarse teeth Mongolian oak (var.grossseserrata rehd.et wils.): The long narrow leaves, serrated edge with inside, with side veins 14-18 pairs. 6. Liaodong oak (q.liaotungensis koidz.): Branches glabrous, wavy leaf margin with 5-7 pairs of shallow circular serrated, dorsal childhood only a sparse pubescence along the veins, lateral veins 5-7 pairs, petiole very short the same in Mongolian oak, small cupule bracts triangular, flat or protruding back, but not verrucous was gray pubescent. The map database of plant species included in China's poisonous plants, the toxicity of poisonous leaves, followed by the cupule. Cattle, horses, sheep and rabbits and other long-term heavy intake might cause poisoning. The main symptoms are loss of appetite cattle, ruminants to reduce or difficult, constipation, lying, urine, pink, reduce the secretion of milk until it stops, also have high fever, tremors, weakness and other symptoms. Body autopsy found that hemorrhagic gastroenteritis, especially in the most significant kidney cystitis, kidney volume increased 2-3 times, the surface of haemorrhagic spots, pyelonephritis, ureteral collapse or cellulose coagulum occlusion, bladder contraction often , emptiness, a small amount of concentrated color urine, mucous membrane inflammation.
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Oak tree (Quercus dentate) Alias: Distribution and habits: With deciduous broad-leaved forest in southern warm (major cities: Qingdao, Yantai, Rizhao, Weihai, Jining, Tai'an, Zibo, Weifang, Zaozhuang, Linyi, Laiwu, Dongying, Xintai, Tengzhou, Zhengzhou, Luoyang, Kaifeng, Xinxiang, Jiaozuo , Anyang, Xi'an, Xianyang, Xuzhou, Lianyungang, Yancheng, Huaibei, Bengbu, Seoul, Tongchuan) Temperate grassland areas (major cities: Lanzhou, Pingliang, Altay, Hailar, Manchuria, Qiqihar, Fuxin, Dandong, Daqing, Xining, Yinchuan, Tongliao, Yulin, Hohhot, Baotou, Zhangjiakou, Jining, Chifeng, Datong, Ceylon Haute ) No Photo: