How to describe the characteristics of ginkgo tree

The trunk of ginkgo tree is thick and tall, and its branches and leaves are particularly lush. Its leaves are like a delicate little paper fan and beautiful butterfly wings. We often use it as a bookmark in books, which can repel insects and has a faint fragrance. Ginkgo trees are divided into male plants and female plants, and the flowers of male plants are like conical spikelets; The flowers of the female tree are like two or three small balls together, which are very inconspicuous. Every April, when groups of bees are busy on ginkgo trees, people will notice that ginkgo trees are blooming.

Unlike maple leaves, Ginkgo Garden is dressed in fiery red in autumn. Nor is it as tall and straight as the pine and cypress in the ice and snow; It is not as beautiful and elegant as a banana tree. However, Ginkgo biloba leaves have their own unique characteristics: in autumn, they will turn into golden lemon yellow, and under the sunlight, the whole body will be bright, instead of morbid yellow like other leaves. When they came under the ginkgo tree, it was like coming to a magnificent world.

Extended data:

Ginkgo biloba is the only medium-sized broad-leaved deciduous tree in gymnosperms, which can grow to 25-40 meters high and have a DBH of 4 meters. The bark of young trees is smooth and light gray, while the bark of big trees is grayish brown, with irregular longitudinal cracks on the surface, long branches, slow growth and serrated short branches. It has a thin crown and some irregular branches. The annual branches are light brownish yellow, and the biennial branches are thick and short, dark gray, with fine longitudinal cracks. Winter buds are yellow-brown, mostly oval, and the top is blunt and round.

Ginkgo biloba is very special among seed plants, and it is the only broad-leaved deciduous tree in gymnosperms. The leaves are fan-shaped, binary fission or totally divided, with veins parallel to the leaves and no midvein. On the annual branch, the leaves are scattered spirally, and on the short branch, 3 ~ 8 leaves are clustered.

The fan-shaped leaves of adult Ginkgo biloba are mainly in the form of whole, binary fission or multi-division, while the leaves of young Ginkgo biloba are mostly binary fission, multi-division and rarely non-division.

4-6 male cones, yellow-green anthers and spherical pollen. During germination, swimming sperm with two cilia are produced. The stem of the female cone is very long, and the stem is divided into two branches, with at least 3 ~ 5 branches or no branches.

Ginkgo biloba has certain ornamental value. A large number of ginkgo forests have an overall aesthetic effect because of their straight branches and regular conical crowns. Ginkgo biloba leaves turn golden yellow in autumn, which is beautiful under the low-angle sunlight in autumn, and is often used as the background by photographers.

Ginkgo biloba is a gymnosperm, which has only the structure of seeds and has not yet evolved into the fruit of angiosperms, but the seed coat of Ginkgo biloba is developed and looks very similar to the fruit of angiosperms. Ginkgo seeds are1.5-2cm, and are wrapped by a brown seed coat of 2-3cm. Ginkgo seed is called ginkgo, which is a bit like apricot, because it contains a lot of butyric acid and smells like fermented bean curd. Some people are allergic to the ingredients in fruit pulp, itchy and blistered, and they need to wear gloves when washing fruits. Seeds can be eaten after peeling and cooking, which is a traditional food in China and Japan.

References:

Baidu encyclopedia-ginkgo biloba