2. Ginkgo biloba, alias Ginkgo biloba and Gongsun Tree, belongs to gymnosperms, and other plants in the same family have been extinct, so it is called "relict plant".
3. Metasequoia glyptostroboides, a deciduous tree, is the only existing tree species of Metasequoia in Taxodiaceae, and is a rare tree species endemic to China. The first batch of Metasequoia glyptostroboides is listed as a rare species of national first-class protected plants, and is called "living fossil" in the plant kingdom.
4. Cochineal insect is a genus under Rubiaceae, and it is a deciduous tree. There is only one species of this genus, distributed from west to east of China.
Jin Chahua is a famous traditional flower in China and a precious ornamental plant in the world. According to statistics, there are about 220 species in total. But after natural hybridization and artificial cultivation, there should be more than a thousand varieties. But before that, people have never seen a golden variety. 1960, Chinese scientists first discovered a camellia, named camellia, in Nanning, Guangxi.
6. Cryptomeria argyrophylla is a Pinaceae plant and a rare tree species unique to China. Together with Metasequoia glyptostroboides and Ginkgo biloba, it is known as the "national treasure" in the plant world and is a national first-class protected plant. Cryptomeria fortunei is an evergreen tree of Pinaceae. Its trunk is straight, tall and beautiful, with dense branches and leaves. Ginkgo biloba is monoecious, and the male cones are usually solitary in the axils of two-year-old branches; Female cones are solitary in the axils of the branches of the current year. The cones mature after two years and are oval. Known as the "living fossil" in plants.
7. Water cypress, deciduous or semi-deciduous tree of the genus Water cypress in Cetaceae. There is only 1 species of this genus, which is endemic to relict plant and China in the world. In Tertiary, Pinus was not only diverse, but also widely distributed in the northern hemisphere. After the Quaternary Ice Age, Europe, North America, East Asia and Northeast China were all extinct, leaving only one species, which distributed in parts of southern and southeastern China.
8. Jinsong, also known as Jinsong and Shuisong, is a deciduous tree of Pinaceae. The trunk is straight, 40m high, DBH1.5m. The bark is dark brown and deeply split into scales. Branches rotate and spread, and branchlets are divided into long branches and short branches. The leaves are strip-shaped, flat and soft, and spread spirally on the long branches, and the short branches are clustered with 15-30 pieces, which spread flat and radially around, and become golden yellow and round like copper coins in autumn, hence the name.