A woody septa in the stone of angiosperms of Juglans. Its height is 20~25m, and its bark is grayish white. Branchlets are short glandular hairy, odd pinnately compound leaves, alternate, elliptic-ovate to oblong; Flowers are unisexual, monoecious, the male inflorescence axillary, and the female inflorescence spicate; The ovary is inferior, and the fruit is nearly spherical and drupe-shaped. The flowering period is May-June, and the fruit period is 9 9- 10/October. It was born in mountainous and hilly areas, and cultivated in all parts of China.