Metasequoia glyptostroboides is a tree with opposite lateral branches. The leaves are linear and opposite to each other. The trunk is straight, the crown is tower-shaped, it likes humidity, grows fast and has good material for garden viewing. It is a national key protected plant in China,
Metasequoia glyptostroboides is the only existing tree species in Cyperaceae and a precious tree species left over from China. Metasequoia glyptostroboides is the first rare species listed as a national first-class protected plant in China, and is known as the "living fossil" in the plant world. 1948 In May, the Metasequoia Conservation Committee of China was established, which was the first national organization to protect a single biological species in the world. 1984, Metasequoia glyptostroboides was designated as a city tree in Wuhan. The discovered fossils show that Metasequoia was widely distributed in the northern hemisphere in Mesozoic Cretaceous and Cenozoic, but all other species of Metasequoia were extinct after the Quaternary Glacial Period. However, in the border areas of Sichuan, Hubei and Hunan in China, Metasequoia glyptostroboides is a rare treasure because of its complex terrain and little influence by glaciers.
2 Davidia involucrata
Alias: Dove tree with dark gray or dark brown bark, which often splits into irregular thin slices and falls off. The young branches are cylindrical, the branches of the year are purple-green, hairless, and the perennial branches are dark brown or dark gray. Its ornamental part, spent in a big bag, is white when it is mature, more than ten centimeters long and five or six centimeters wide. This is very big, with his tidbits in the middle, and the color is darker. When the wind blows, two bags dance with the wind, like pigeons flying, so people give him a particularly pleasant name, called Dove Tree, which is unique to China and is a first-class protected plant in China. It's exquisite and rare. At present, the plant is mainly distributed in Hubei, Chongqing, Sichuan and southwestern Shaanxi. It is very rare in Beijing because of its dry climate.
3 camellia chrysantha
Camellia chrysantha is golden in color, cup-shaped or bowl-shaped. It is the queen of the tea family. Jinhua tea can be used as a beverage, as a medicine to treat dysentery, and for external use to treat ulcers. Flowers can treat hematochezia. It can be used as food pigment. Hard wood, compact structure, utensils and crafts, seeds can squeeze oil. Among many known camellia chrysantha, camellia chrysantha has the most ornamental and breeding research value.
4 Taiwania flousiana
Alias: Taiwania flousiana, 60 meters high, spreading branches, wide and round crown, big branches with drill-shaped leaves, ventral bulge, back and apex bent inward, flat quadrangular drill-shaped slightly bent inward on both sides of young trees and budding leaves, with sharp apex, two to five clusters of male cones, stamens 10~ 15, 2 ~ 5 per cluster. The seeds are oblong or oblong to ovoid, with cones 10- 1 1, distributed in Yunnan, Hubei, Hunan and other places. This is of great scientific value to the study of paleogeography, paleoclimate and paleoflora, and it has been included in the national key second-class protected wild plants list and the IUCN Red List of Endangered Species.
Five silver fir trees
Cryptomeria fortunei, 10 to 20 meters long green tree, DBH more than 40 cm, likes warm and humid environment. It is named because there are two white pores on both sides of the midvein of its leaves, which shine in the sun. As an ancient legacy species, Cryptomeria fortunei is of great research value to the paleontology and history of Eurasia. It is precious because it was widely distributed on the earth before the third century. However, in the fourth century about 6,543,800 years ago, there were four ice ages on the earth, and glaciers swept across the whole European and American continents, resulting in the destruction of all Chinese fir trees in the European and American continents. However, due to the complex terrain, mountainous mountains and layers of peaks in the southwest of China, the glacier movement is blocked, which provides shelter for the preservation of Chinese fir. It is because of its rarity and antiquity that the value of Chinese fir has doubled. It is listed as a national first-class protected plant and has the reputation of "plant panda"
6 wangtianshu
Alias: Qingtian tree, 40 ~ 60m high, DBH 60 ~ 150m, with gray or brown bark, shallow longitudinal crack on the upper part of trunk, massive peeling off on the lower part of straw bag, covered with scaly hairs with round lenticels, and elliptic or elliptic lanceolate leaves. It is a rare tree species unique to Yunnan, China. It is distributed in Bubeng Peak and Guangnalinzhai in Xishuangbanna, opposite to Wangtianshu.
7 spines
Alsophila spinulosa, 3 ~ 8 meters high, dark purple petiole and leaf axis, dense thorns, leaf length 1 ~ 3 meters, pinnatifid, spirally arranged, born in mountain streams or sparse forests, 260 ~ 1600 meters above sea level, Alsophila spinulosa.
8 snow iron taro
Alias: money tree, a perennial evergreen herb, is an extremely rare underground tuber foliage plant. There is no main stem on the ground, and adventitious buds germinate from tubers to form large compound leaves, with fleshy leaflets and short, solid and dark green petioles; The underground part is a big tuber. Pinnate compound leaves are extracted from the top of tuber, and the axial surface is thick, with opposite or nearly opposite leaflets on the axial surface. Buddha's bud is green, boat-shaped, and its thorns are short. Originated in the tropical grassland climate zone with less rainfall in eastern Africa, it was introduced to China in 1997. Snow taro is an indoor foliage plant, which can purify indoor air. Almost every moment, its freshly smoked pinnate compound leaves are two pieces, one is long, the other is short, the other is thick and the other is thin, so it is also called "Dragon and Phoenix Wood", which means "the way to make money, the way to make money".
Nine ginkgo trees
Alias: Gongsun Shu, 40m high and 4m in DBH. Its leaves are fan-shaped and light green. It has a long life, and the growth rate of ginkgo trees is slow. Generally speaking, under natural conditions, it takes more than 20 years and 40 years from planting to fruiting. The fruit of ginkgo tree is a group of nutritious minerals, vitamins and amino acids can be found in ginkgo, but it is not recommended to eat ginkgo raw in life.
10 Liriodendron chinense
Liriodendron, 40 meters high, DBH 1 meter above, with gray or grayish brown branchlets. Leaf jacket shape. Distributed in China and northern Vietnam, China is distributed in Shaanxi and southern Anhui, west to Sichuan and Yunnan, south to Nanling Mountains, and cultivated in Taiwan Province Province. It grows in the forest at an altitude of 900- 1000 meters. It is listed in the Red List of Endangered Species of the World Conservation Union and the national second-class rare and endangered plants in China.