Brief introduction of ginkgo tree

Ginkgo biloba (scientific name: Ginkgo biloba? L.), a deciduous tree of Ginkgo in Ginkgoaceae. Ginkgo biloba is a deciduous tree with a DBH of 4 meters. The bark of young trees is nearly smooth, light gray, and the bark of big trees is grayish brown, irregular and rough longitudinally. There are long branches and slow-growing short branches. The crowns of young and mature trees are conical, while the crowns of old trees are roughly oval.

Branches are nearly whorled and extend obliquely upward (large branches of female plants are often more developed than those of male plants). Leaves alternate, scattered radially on long branches, petiole slender, fan-shaped, light green on both sides, glabrous. Scattered on long branches and clustered on short branches. Its pulse type is "bifurcation pulse".

Extended data:

Ginkgo biloba grows slowly and has a long life. It takes more than 20 years from planting to fruiting, and after 40 years, a large number of fruits can be produced, and the life span can reach more than 1000 years. The trees that have existed for more than 3,500 years are still luxuriant in leaves and fruits, and they are the longevity stars in the trees.

Ginkgo biloba first appeared in the Carboniferous period 345 million years ago. Ginkgo biloba was widely distributed in Europe, Asia and America in the northern hemisphere, widely distributed in the northern hemisphere in Mesozoic and Jurassic, and began to decline in the late Cretaceous. Until 500,000 years ago, the Quaternary glacial movement occurred and the earth suddenly became cold. Most ginkgo plants are on the verge of extinction. They are extinct in most parts of Europe, North America and Asia. Only China has superior natural conditions, which have been miraculously preserved. Therefore, scientists call them "living fossils" and "pandas in the plant kingdom".

Reference: Baidu Encyclopedia-Ginkgo Tree