What rare trees are there?

Cold-resistant evergreen shrubs or small trees are cold-resistant primitive species of Camellia and famous ornamental plants. In addition to the trees in Laoshan Mountain, Shandong coastal islands also have natural wintering distribution, which is the northernmost boundary of the natural distribution of evergreen broad-leaved trees in China. In the past, it was recorded in Jimo County Records, Wendeng County Records and Rongcheng County Records. For example, the "Wendeng County Records" contains: "Suman Island is in the East Caspian Sea of the county, and it is quite prosperous in winter." The original plants in Houdao have been destroyed repeatedly, but there are still small pieces of wintering remnants in Nagato Rock Island, Qianliyan Island and Daguan Island, which are only distributed in Qingdao and often mixed with Elaeagnus macrophylla, Machilus macrophylla and Alpinia pseudoacacia. According to the survey, there are 663 overwintering trees in Qingdao (excluding the urban area) for more than 30 years, of which 60 1 plant grows on the island, 62 plants are cultivated in coastal areas, and 549 plants are planted in Nagato Rock Island, which are mainly distributed on the hillside at an altitude of 30-80 meters. The tallest tree is 6 meters, that is, 2 ~ 3 meters, with a maximum diameter of 40 cm, generally 20 ~ 25 cm. The largest crown is 8.4×6.5 meters, generally 3. 0 ×3.5 meters. The age of this tree is about 200 years old. There are different types of winter tolerance, according to the flowering period: early flowering type (65438+1flowering from the end of October to the beginning of February) is commonly known as winter tolerance; The late flower type (flowering from April to June) is commonly known as Chunkang. According to the number of petals: there are single petals (the basic number of petals of the original flower is 5 ~ 7) and multiple petals (more than 8 petals). According to the shape of corolla, there are flat type and cup type. According to leaf type, there are pointed leaf type and broad leaf type. According to the fate of leaves, there are obvious sawtooth types and inconspicuous sawtooth types. All these varieties have different ornamental values. Cold-resistant plants thrive under the ecological conditions of the island, blossom and bear fruit normally, and naturally regenerate well. However, due to man-made destruction and incomplete plants, the winter tolerance of many islands is on the verge of extinction. There are 1 10-year-old magnolias in Wulan Temple in Kunyu Mountain, Mulan. The height of the tree is10.7m, and the DBH is 34.8cm. Every spring, the trees are full of flowers. There is Amin Mulan in Chenjiazhuang, the chengguan of Juxian County, with a height of15m, which is the highest in Shandong. In addition, there are magnolia trees in cherry orchard, Taiqing Palace, Huayan Temple, Baiyun Cave, Mingxia Cave, Dalaoguan and Kouguan Village, Kouguan Township, Wulian County, taian county. Laoshan Mountain has a state-protected Magnolia grandiflora, which is a precious tree species of Magnoliaceae. Lagerstroemia indica is also called Hundred Days Red, and there are many century-old trees in Shandong. There is a 350-year-old Lagerstroemia indica in the north of Buyue Gallery of Taiqing Palace in Laoshan Mountain, with a height of 8 meters and a DBH of 24.2 cm, which is the largest one in the province at present. There are trees in Xiagong Mingxia Cave and Shanggong of Laoshan Mountain that are more than 100 years old. Lagerstroemia indica in Chengyang Township, Haiyang County and Yong 'anzhuang, Ninghai Town, Mu Ping County are 300 years old and 200 years old, respectively, with a height of 7 meters and 5 meters. Buxus buxus, also known as Buxus microphylla, is cultivated in Shandong city parks, and there are big trees in Jiaodong and southern Shandong. There are four ancient Euonymus japonicus in Laoshan Mountain, of which one in Mingxiadong is 800 years old, with a tree height of 6 meters and a DBH of 38.6 cm, and the other in the west of Sanguandian of Taiqing Palace is 700 years old, with a tree height of 10. 1 m and a DBH of 42.7 cm, which is the largest two Euonymus japonicus in Shandong Province. There are 250 and 200 years old boxwood in Huayan Temple in Laoshan Mountain and Dongguan Emperor Temple in Laodong, with the height of 6 meters and 7.5 meters respectively. There is a boxwood tree in Yuhuangding Park in Yantai City, which has a history of 200 years and is 3.9 meters high. There are 100 ~ 300-year-old boxwood in Shen Liu Zhuang Township, Dongguan Township, Ju County, Zhuang Village, Li Jianzhuang Village, Chengguan Town, Fei County, Yu Lianhua Village, Shijing Township and Shichang Village, Dashan Township, Ju 'nan County. There is a 600-year-old boxwood in the farmhouse of Dahenan Village, Guwei Town, Zhangdian District, Zibo, with a height of 5.7 meters. Shandong tassels are distributed in Jiaodong and southern Shandong, but rare in western Shandong and northern Shandong. There are more than 40 ancient trees over a hundred years in the province, including one in Xigu Village, Pingyi County, which is 900 years old, with a height of14m and a DBH106cm. It is the oldest tree in Shandong Province, and the locals call it "Snow Tree". This shady area is 200 square meters, and flowers bloom like snow every April. A willow tree in the province is over18m high in Ganquan Village, Wenzu Town, Zhangqiu, with a height of18.5m and a DBH of 90cm. There is a factory in Shaojiazhuang, Ye Nan Town, Laiwu County with DBH 1m or more, DBH110 cm; A strain of Kongzhuang in Xiacun Town, Cangshan County has a history of 500 years, DBH130cm; A 400-year-old plant, DBH 1 12cm, is located in Xixin Village, Shizhuang Township, Qufu. Fringe is a good ornamental tree species and the main rootstock for grafting osmanthus fragrans. Thick-shelled trees are planted sporadically in Linyi and Jining, Shandong Province. Among them, there are 1 1 trees over a hundred years old, and there is a tree in thoreau tree Village, Hushan Township, which is 550 years old, with a height of 1 1 m and a DBH of 45.4 cm. A 500-year-old plant in Liucun Village, Xindian Township, Wenshang County, with a height of 4.5m and a DBH of 50cm. Up to now, there are four * * * factories with a history of 300 years, one in Xihanfeng Village, Shilianzi Township, Ju 'nan County, one in Gengjia Xiefang, Jiuqu Township, Linyi County, one in Oak Bridge Village, Shadun Township, Tancheng County, and one in Baoan Village, Yaocun Town, Qufu County. The height of the tree is about 10 m, and the DBH is 30 ~ 98 cm. In Zhejiang Province, there are 18 cudranthes trees over 100 years old. In Penglai, Xiaomen's hometown, there is a 600-year-old Zhejia tree, which is 4.8 meters high and DBH 50 cm. There are five 600-year-old Zheshu trees in Shabu Village, Yifeng Township, Jimo County, with a plant height of 6.7 meters and a DBH of 55.7 cm. Wang Ying of Zhang Qiu Township, yanggu county has a 600-year-old Zheshu, DBH 100cm. The 250-year-old Zheshu in Jiangzhuang, Zhangji Township, Shan County grows in a graveyard, with a height of 9 meters and a DBH of 59 cm. Pteroceltis tatarinowii grows in limestone mountains. There is a big Pteroceltis tatarinowii tree in Lingyan Temple in Changqing, which is called "Chitose Tan" and grows vigorously. Qingtan Temple in Wuzhuang Township, Yicheng District, Zaozhuang City, and Yao Feng Temple in Dianzi Township, tengxian, all have large sandalwood trees over a hundred years old. Among them, the height of the sandalwood tree in Qingtan Temple is17m and the DBH is120cm. There is a green sandalwood forest here, forming the scene of "green sandalwood in autumn". Pteroceltis tatarinowii has been listed as a national first-class protected plant. The big osmanthus tree is planted in the open air in the Fifth Courtyard of Zhouzi, Lijiazhuang, Rizhao Town, Donggang District, Rizhao City. The tree is 5 meters high and 65.6 centimeters in diameter, with lush foliage and a large number of flowers every year. The tree is over 300 years old. There are 350-year-old osmanthus trees in Yugou Village, Xincun Township, Tancheng County, and 200-year-old osmanthus trees in Dacaizhuang, Linshu County. There are also some rare tree species all over Shandong. According to records, there is a 300-year-old wisteria in Mengmiao, Zouxian County, with a root diameter of 54 .2 cm. Wisteria in Shangzhi Village, Yuezhuang Township, Yiyuan County has been growing vigorously for 120 years. There is a 500-year-old Lingxiao in Shanbeitou Village, Dongting Township, Fushan County, with a root diameter of 77.438+0 cm. There is a century-old Lingxiao in the veterinary station of Nanchang Township, Xuecheng District, Zaozhuang City, with a height of 8 meters and a root diameter of 10 cm. There is a 400-year-old Lycium barbarum in the courtyard of Shanxian Armed Forces Department, which is 2.5 meters high and DBH 12 cm. In Lintuanhe Village, Zhacun Township, Ye County, there is a Lycium barbarum L. with a height of 4.6 meters and a DBH 10.7 cm. Ming Dow in Laoshan Forest Farm has 130 years old Hovenia dulcis Thunb, with a height of14.3m and a DBH of 49.3cm. There are small forests nearby. At an altitude of 1500m, there is a 970-year-old Sophora alopecuroides with a height of 5.5m and a DBH of 23.5cm, which is the only big tree in Daiding. There is a natural nanmu in Laoshan Mountain, which is the most cold-resistant among nanmu.