Ginkgo biloba, a plant of Ginkgo in Ginkgoaceae, is oval, with a yellowish-white or yellowish-brown surface, smooth and hard, with one end slightly pointed and the other blunt. Its endosperm is light brown at one end and golden yellow at the other end. Its inner core is powdery with a small core in the middle. It is light yellow or orange yellow at maturity, and the fruiting period is July-June, 10. The second fruit of Compendium of Materia Medica originated in Jiangnan, and its leaves are as follows.

Ginkgo biloba is mainly distributed in temperate and subtropical climate zones in China, Shandong, Zhejiang, Anhui, Fujian and other provinces. Ginkgo biloba is a light-loving tree with deep roots and wide adaptability to climate and soil. It can grow in areas with high temperature, rainy, little rainfall and cold winter, but it is not tolerant to saline-alkali and over-wet soil. Ginkgo biloba can be propagated sexually and asexually by seeding, hardwood cutting, tillering and bud differentiation. 18960.8886868886 17

morphological character

Morphological identification of trees: deciduous trees, up to 40 meters high. The trunk is erect, the bark is gray, the branches are divided into long branches, the leaves on the long branches are spirally scattered, the leaves on the short branches are clustered, the leaves are fan-shaped, there are many branched veinlets, the petiole is long, the upper edge is 5~8 cm wide, and some of them are shallowly split and dioecious. Peanuts are in the axils or bracts of short branches, and the male flowers are flower-shaped with many stamens.

The female cone has a long stalk with 2 forks at the stalk end and 65,438+0 ovules at the fork end. Only 1 developed into seeds. The seed is drupe-shaped, oval to nearly spherical, 25-35 mm long, with fleshy exocarp and white powder, pale yellow or orange yellow when mature, bony and white seed coat in the middle, and abundant endosperm. The flowering period is April-May, and the fruiting period is 7-65438+1October. Ginkgo fruit ripens around September. After maturity, the seeds are golden yellow, similar to kumquat, with white spots on the surface.