The pinyin name is The fruit of Camptotheca acuminata Decne., a plant of the Davidia family. Harvest the fruits in autumn when they are ripe and have not yet fallen off, and dry them in the sun.

A large deciduous tree in its original form. The leaves are alternate, ovate rectangular or ovate elliptical, 7-18cm long, 5-10cm wide, apex acuminate, base round or broadly wedge-shaped, entire edge, ciliated on the edge, 10-11 pairs of feather veins; petiole red, with Thin hair. The flowers are unisexual and homogeneous, forming a spherical flower head; the calyx is 5-toothed; the petals are 5, green; the male flowers have 10 stamens; the female flowers have an inferior ovary with 1 cell, a stigma with 3 lobes, and an obvious flower disk. Infructescence globose. The flowering period is in August and the fruiting period is from October to November.

Habitat distribution occurs in relatively humid places below an altitude of 1000m; there are plantings. Mainly produced in Zhejiang, Jiangsu, Jiangxi, Hubei and Hunan.

Character: The fruit is lanceolate, 2 to 2.5cm long, 5 to 7mm wide, with a pointed apex and stigma residue; the base becomes narrow, and oval pit marks can be seen on the flower disk. Winged. The surface is brown to brown-black, slightly shiny, with vertical wrinkles, and sometimes several angular edges and black spots can be seen. It is tough, not easy to break, and has a fibrous cross-section. There is one seed inside, which shrinks into thin strips. Bitter taste.

Chemical ingredients include camptothecine, venoterpine, 10-hydroxycamptothecine, 10-methoxycamptothecine , betulic acid, vincoside-lactam, etc.

Nature and flavor are cold, bitter and astringent; poisonous.

Its main functions include anti-cancer, dispersing knots, breaking blood and removing blood stasis, and is used for various tumors, such as gastric cancer, intestinal cancer, chorioepithelial carcinoma, lymphosarcoma, etc.