What are the precious plants in China?

Ginseng is a dicotyledonous perennial plant in Araliaceae, ranking first among the "Three Treasures in Northeast China". It is a famous and precious medicinal material at home and abroad. Northeast China is the most famous ginseng producing area in China, and the real hometown of ginseng is Changbai Mountain, where wild ginseng (called wild ginseng) and cultivated ginseng (called garden ginseng) account for almost more than 90% of the country. The reason why ginseng is rare and precious is mainly related to its medicinal value. Ginseng has an excellent effect on strengthening the body and prolonging life. For thousands of years, ginseng in Chinese herbal medicines has been listed as "top grade". In addition, ginseng has a unique shape, especially the wild old ginseng, which often has the shape of a person, thus creating a variety of mysteries such as the so-called "ginseng essence" and "ginseng doll" and compiling many touching stories. Because of its great function, ginseng has become a symbol of China culture. C. Nitissima belongs to Theaceae, Theaceae, Theaceae, and belongs to the same family and genus as the famous teas in China. It is one of the eight first-class protected plants in China. It has high ornamental, scientific research, development and utilization value, and is known as the "giant panda in the plant world" and "queen of tea family", which is internationally renowned. 1960, yellow camellia was first discovered in 100,000 mountains in Guangxi. 1965 Mr. Hu Xiansu, a famous botanist in China, named this yellow camellia "Golden Camellia". Since then, Camellia chrysantha has become famous and shocked the flower beds in the world. Camellia. Waxy gold, crystal clear, bright and dazzling, dotted in green leaves and delicate branches, charming and pleasant, noble and elegant, with unparalleled ornamental value. Be honored as the "queen of tea family" and "superstar" in flowers. Because it is an ancient plant with extremely low seed setting rate and rare in the world, it is also called the "giant panda" in the plant world. Cryptomeria fortunei is an ancient relict plant. In the Latin scientific name of plant taxonomy, cathaya, the common name of cathasia, means "Huaxia" when translated into Chinese, which is the ancient name of Greater China. Two million years ago, Cryptomeria fortunei was widely distributed in Eurasia. Since it was destroyed by Quaternary glaciers, people can only explore it with plant fossils. 1955 In May, scientists in China discovered a strange tree in Huaping, Guangxi, which looked like a pine tree rather than a pine tree. Appraised by relevant experts, it is a living specimen of the precious tree species-Cryptomeria fortunei, which is considered extinct by foreign scientists. Taxodium ascendens is a Pinaceae plant. Its trunk is generally about 20 meters high and its DBH is over 40 cm. Beautiful branches are divided into long branches and short branches, and young leaves have eyelashes at the edges. Surprisingly, there are two pink pores on the back of the green leaves, and the leaves full of dew are shining silver in the sun, hence the name "Silver fir". Davidia involucrata, also known as "dove flower", is known as "China dove tree". In late spring and early summer, there are thousands of "dove flowers" in the Davidia involucrata forest, which are called "Davidia involucrata fragrant pigeons". Davidia involucrata is a descendant of10 million years ago. It is called "living fossil of plants", a rare plant in China and a specialty of Emei Mountain. It grows in pieces between Jiulao Cavern, Xianfeng Temple and Yuxian Temple in Mount Emei, and continues to wash elephants. Donglin is deep and beautiful, as quiet as ancient trees, with sky high and clouds light and summer like autumn. The peaks in the west stretch, and Zhang Xianfeng, Guanyin Rock and Changshou Rock are green and empty, and sometimes white clouds stay at the top of the mountain; Cliffs and canyons are connected to the east, vines are entangled, and distant mountains are shrouded in clouds, thousands of miles away. Davidia involucrata and various broad-leaved trees form a green corridor along the winding mountain road of 7.5 kilometers; Under the peak rock, on the cliff, by the stream and in the valley, the beautiful scenery is surrounded by beautiful flowers, white flowers and green leaves. Metasequoia glyptostroboides "an amazing scientific discovery-the sequoia orientalis, which dominated the world 654.38 billion years ago and then disappeared for 20 million years, still lives in a remote village in China!" This is the number one news published in the San Francisco Chronicle on March 25th, 1948. The "Oriental Sequoia" or "Dawn Sequoia" mentioned here is Metasequoia. According to paleobotanists, Metasequoia glyptostroboides is an ancient plant. The ancestors of Metasequoia glyptostroboides were born near the Arctic Circle in the late Mesozoic Cretaceous more than 654.38 billion years ago. At that time, the climate on the earth was very warm, and the Arctic was not completely covered with ice as it is now. Later, due to the changes of climate and geology, Metasequoia gradually moved southward and distributed to Europe, Asia and North America. Judging from the fossils found, they are almost all over the northern hemisphere, which can be said to be a prosperous time. In the Cenozoic Quaternary, glaciers appeared on the earth, and Metasequoia glyptostroboides could not resist the attack of glaciers. It has since disappeared, leaving only the remains of fossils. But it wasn't really wiped out. When Metasequoias around the world were destroyed by glaciers, some Metasequoias in China escaped this disaster. The reason is that in the Quaternary, although glaciers in China were widely distributed, the glaciers in China were scattered "mountain glaciers" instead of huge ice like those in Europe and America. This "alpine glacier" flows down from the mountain, covering the nearby area, but leaving many ice-free places, so some plants can continue to survive in this "shelter". In this way, several Metasequoia glyptostroboides in China hid in the ravine near the border of Sichuan and Hubei, and survived, becoming rare treasures. These surviving "living fossils" lived in obscurity in the ravine for tens of millions of years like hermits, and were not discovered until the 1940s. Looking up to heaven, compare the "giants" among the trees in China. At present, the only tree that can win the crown of the tallest tree in China is the 80-meter-high Wangtian tree. Wangtianshu was discovered by Yunnan Forestry Investigation Team of China in Xishuangbanna in 1975. It belongs to Dipterocarpaceae, Lu 'an. The genus has *** 1 1 members, most of which are distributed in Southeast Asia. Wangtianshu is a unique and rare tree species, which only grows in Yunnan, China. It is only distributed in the range of 20 square kilometers from Bubeng in Xishuangbanna, Xinzhai in Guangnali to Jingpiao. Most of the trees are located in primitive valley rainforests and mountain rainforests. Most of them grow in pieces, forming independent communities and forming peculiar natural landscapes. Ecologists regard them as symbolic trees of the tropical rain forest. Wangtianshu is a national first-class protected plant. Generally, the height is more than 60 meters, the DBH is about 100 cm, and the thickness can reach 300 cm. Towering trunks stand among the green trees in the forest, twenty or thirty meters higher than the surrounding trees with a height of thirty or forty meters. It's really going straight into the sky, with a piercing posture. Wangtianshu grows rapidly, with excellent material, hardness, corrosion resistance and beautiful texture. It is high-quality wood for manufacturing all kinds of high-grade furniture, shipbuilding, bridges and buildings. There are hundreds of Wangtianshu forest areas with a height of 40-70 meters in Bubeng Nature Reserve, Mengla County, Xishuangbanna. The local government has established an "air corridor" with a height of more than 20 meters and a length of 2.5 kilometers, where tourists can enjoy the beautiful scenery of virgin forests and wildlife. Taiwania flousiana is a rare tree species in the world, which only grows in Myanmar, Taiwan Province Province, Hubei, Guizhou and Yunnan. It is a protected plant in China. It was first discovered in 1904 at an altitude of 2000 meters in Wuzunkeng, the central mountain range in central Taiwan Province Province. Taiwania flousiana is an evergreen tree with spreading branches and slender drooping branchlets. Up to 60 meters high and 2-3 meters in diameter. It slowly grows to 40 meters high. Dense branches, small crown and fibrous bark. The leaves on the branches are arranged in a spiral shape. Strangely, the leaves on the small tree are different from those on the old tree. The leaves on the young trees are sharp, shovel-shaped, large and flat, while the leaves on the old trees are scaly and rhombic. Seen from the cross section, they are triangular or quadrilateral, and there are stomatal lines on them. Taiwania flousiana is a monoecious spherical flower plant. 5-7 male cones are borne at the top of branches. Female cones are smaller than male cones and are also planted on branches. The growing cones are oval without scales, and the bracts are inverted conical to rhombic. Its seeds are only about 5 mm long and its wings are very narrow. Taiwania flousiana belongs to Taiwania of Taxodiaceae. It has only one "twin brother"-Taiwania flousiana. Because of their similar appearance, they are distributed in the same area and are generally called Taiwania flousiana. But they are still different. The leaves of Taiwania flousiana are narrower than Taiwania flousiana, and the seed scales of cones are more than Taiwania flousiana. Although they are rare tree species, the number of Taiwania flousiana is relatively small. Therefore, Taiwania flousiana is listed as a national first-class protected plant, and Taiwania flousiana belongs to the second category. There is very little information about the introduction of Trichosanthes kirilowii. Even the pictures of Trichosanthes kirilowii can't be retrieved on the vast Internet, and even the relevant information can't be found. I only know that Trichosanthes kirilowii originated in Caohai and Chishui, Guizhou Province, and was upgraded to a national nature reserve with the approval of the State Council.