Ginkgo (scientific name: Ginkgo biloba?L.), for the Ginkgoaceae, Ginkgo genus deciduous trees. Ginkgo is a large deciduous tree, diameter at breast height up to 4 meters, young tree bark is nearly smooth, light gray, the bark of large trees gray-brown, irregular longitudinal cracks, rough; there are long branches and slow-growing spurred short branches. The crown is conical in the young and strong years, broadly ovate in the old;

Branches are nearly whorled, obliquely upward (the large branches of female plants are often more spreading than those of male plants). Leaves alternate, radially scattered on long branches, with slender petioles, flabellate, light green on both sides, glabrous. Scattered on long branches, clustered on short branches. Its leaf veins are in the form of "dichotomously forked veins".

Expanded Information:

Ginkgo grows slowly and has a very long life span, from planting to the results of more than twenty years, forty years before the results of a large number of life expectancy of more than 1,000 years of age, more than 3,500 years of the existing tree is still leafy and fruity, it is the tree in the old star.

Ginkgo first appeared in the Carboniferous period 345 million years ago. Was widely distributed in the northern hemisphere of Europe, Asia, America, Mesozoic Jurassic ginkgo was widely distributed in the northern hemisphere, the late Cretaceous began to decline. To 500,000 years ago, the Quaternary glacial movement, the Earth suddenly became cold, the vast majority of ginkgo plants on the verge of extinction, in a Europe, North America and the vast majority of regions in Asia extinction, only China's superior natural conditions, only miraculously preserved. Therefore, by scientists called "living fossil", "the panda of the plant world".

Reference: Baidu Encyclopedia - Ginkgo tree