The source is the seed of the turnip cabbage plant citrus.
Subject source: dicotyledonous plants, rutaceae plants.
Medicinal parts: the seeds of oranges.
When the autumn fruit is ripe, cut open the fruit, collect the seeds and dry them in the sun.
Small orange evergreen tree, 6 meters high. The branches are thin and short, with thorns. Leaves alternate, with more single leaves; Petiole length 1-2.5 cm, broad wings; Leaf blade ovoid or ovoid, 3-6 cm long, 1.5-3.5 cm wide, infinitely conical, slightly concave, rounded or wedge-shaped at base, entire or undulate teeth, green surface, yellowish green back, and dense lateral veins. Flowers white, solitary or clustered in leaf axils; Sepals 5, lobes triangular; Petals 5, obovate-oblong; Stamens 14-22, connate at the base; Style shorter than stamens, stigma oblong. The fruit is oblate, with a transverse diameter of 5-6cm, wrinkled pericarp, depressed oil cells, 9- 1 1 petals, irregular arrangement and extremely sour taste. 20-25 seeds, about 1.4cm long, light brown, multi-embryo, white cotyledons. The flowering period is May, and the fruit maturity is 65438+1late October.
Distribution in Shaanxi, Jiangsu, Zhejiang, Anhui, Jiangxi, Hubei, Hunan, Sichuan, Guizhou, Yunnan and other places are cultivated.