Branches are cylindrical, light brown and hairless. Leaves alternate, ovoid, 6- 12 cm long and 2.5-5.5 cm wide, with acute apex, wide wedge-shaped to nearly round base, entire, cartilaginous, sometimes microwave-shaped, green or yellow-green, shiny and dull below, glabrous on both sides or slightly puberulent when young, and three veins at the base.
The midvein is obvious on both sides, and there are 1-5 lateral veins on both sides of the upper part. There are a few branches on the side of the basal lateral vein to the leaf margin, the lateral vein and axillary branch vein are obviously raised above, and there are obvious glandular nests below, which are often pilose. Petiole is slender, 2-3 cm long, concave and convex, and glabrous.
Extended data growth habits:
Cinnamomum camphora is more fond of light and slightly resistant to shade; I like warm and humid climate, and my cold tolerance is not strong. I don't have strict requirements on soil, and I am more resistant to water and humidity. But when transplanting, I should pay attention to keep the soil moisture. Waterlogged water will easily lead to root rot and death due to lack of oxygen, but I am not tolerant of drought, barren and saline-alkali soil.
The taproot is developed and deep, and can resist wind. Strong germination and pruning resistance. The growth rate is moderate, and the tree shape is huge like an umbrella, which can provide shade and keep out the cold. It has a long survival period, can grow into a towering ancient tree for hundreds of years, and has a strong ability to smoke and dust, conserve water, fix soil and prevent sand, and beautify the environment.
geographical distribution
Produced in southern and southwestern provinces. Vietnam, Korea and Japan are also distributed, and other countries often introduce and cultivate them.
It mainly grows on sunny slopes, valleys and river banks with fertile subtropical soil; The growing areas are distributed in the south and southwest of the Yangtze River, and the altitude can reach 1000 meters, especially in Yibin, Sichuan. In 2006, Cinnamomum camphora was elected as the "city tree" of Yibin, enjoying the reputation of "city tree" of Yibin and becoming the main forest of Yibin.
References:
Baidu Encyclopedia-Zhangshu