Osmanthus fragrans, also known as "laurel" and "osmanthus fragrans". Evergreen shrubs or small trees are temperate tree species. The leaves are opposite, mostly oval or rectangular, smooth, leathery and serrated. The crown is spherical. The trunk is rough and gray. The leaves are leathery, opposite, oval or oblong, and the edges of young leaves are serrated. Flowers are clustered, with 3-5 flowers in the axils of leaves, mostly in the spring shoots of that year, and there are also flowers on the biennial branches. The corolla splits into milky white, yellow, orange red and other colors, and the aroma is very rich. There are many varieties of osmanthus fragrans, among which Jingui, Yin Gui, Dangui and Sijigui are common. The fruit is purple-black drupe, commonly known as cinnamon. Han Gui in Hanzhong is the best of osmanthus, which enjoys a good reputation at home and abroad, and is also a household name in Kyushu. Hanzhong is a famous "hometown of osmanthus" at home and abroad. Editor's Note: Osmanthus fragrans is native to southwest and central China, and is now widely planted in the Yangtze River basin and the south. China's southwest, Sichuan, Yunnan, Guangxi, Guangdong, Hubei and other provinces are wild, and India, Nepal and Cambodia are also distributed. Like warm and humid climate, it is a temperate tree species, resistant to high temperature but not cold. Osmanthus fragrans leaves are lush and evergreen, and the trees are long in age. They bloom in autumn and are full of fragrance. It is a unique ornamental flower and aromatic tree species in China. Osmanthus fragrans is the city flower of more than 20 cities in China. Osmanthus fragrans is not strict with the soil. Except alkaline soil and low-lying land or soil that is too sticky and poorly drained, it can generally grow, but slightly acidic sandy loam with deep soil layer, loose and fertile soil and good drainage is the most suitable. Edit the morphological characteristics of this part. Osmanthus fragrans is an evergreen broad-leaved tree with a tree height of15m and a crown covering 400 square meters. The bark is rough, the opposite leaves are grayish brown or grayish white, ovoid, ovoid to lanceolate, and the whole or upper part is sparsely serrated. The trunk is rough and gray. The leaves are leathery, opposite, oval or oblong, and the edges of young leaves are serrated. Flowers are clustered, with 3-5 flowers in the axils of leaves, mostly in the spring shoots of that year, and there are also flowers on the biennial branches. The corolla splits into milky white, yellow, orange red and other colors, and the aroma is very rich. Flowers cluster in leaf axils to form cymes. The flowers are small, yellow and white, and very fragrant. The bark is smooth and gray. The single leaf is opposite, the leather is bright, the leaf shape and leaf margin vary with varieties, the leaf shape is elliptic to elliptic-lanceolate, and the leaf margin is whole or serrated. Flowers are axillary cymes, small and fragrant, and their colors vary with varieties. There are osmanthus fragrans with strong growth potential, thick branches, large leaf shape, rough leaves, dark green leaves and orange red leaves; There are silvery laurel trees with medium growth, smooth leaves, serrated leaves, milky white flowers and dense and sweet flowers; Strong growth potential, smooth leaf surface, sparse serrated or entire leaf margin, light yellow flowers and sparse fragrance, which can bloom with the above varieties from September to autumn 10, or once every 2-3 months. Dangui and Sijigui. The fruit is purple-black drupe, commonly known as cinnamon. Osmanthus fragrans seedlings have obvious taproots, developed and deep roots. Young roots are yellow-brown, and old roots are yellow-brown. The root system of grafted seedlings varies with rootstock; When cuttings are buried in the soil, adventitious roots grow everywhere, but there is no obvious main root. Hanging flowers have strong branching and low technical points, especially in the early stage, and often appear shrub-like for a long time. After close planting or pruning, it can become an obvious trunk. Bark is rough, grayish brown or grayish white, sometimes showing lenticels. The leaf surface is smooth, leathery, dark and bright green near the axis, and the far axis surface is more talked about; Oval, oblong, oval, obovate, lanceolate, oblanceolate, oblanceolate to ovate-lanceolate.