The trifoliate alias iron fence Walled smelly orange, Poncirus Lee, Poncirus, smelly Qi. Deciduous shrub or small tree. Multi-cultivation in the wasteland, roadside or garden hedgerow. Shaanxi, Gansu, Hebei, Shandong, Jiangsu, Anhui, Zhejiang, Jiangxi, Fujian, Taiwan, Henan, Hubei, Hunan, Guangdong, Guangxi, Sichuan, Guizhou, Yunnan and other places are cultivated. Used with the mining. Medicinal parts: the root bark of the plant (Hovenia root bark), tree the dander (Hovenia Ru), spines (Poncirus thorn), leaves (Poncirus leaf), young fruit (citrus aurantium), the mature fruit (trifoliate shell), seeds (Poncirus nuclear) also for medicinal purposes. Morphological description: the fruit flat circular, or pedicle uplift was a short-necked form wide conical, flat and wide at the top of the fovea, shallow radiation ditch, vertical and horizontal diameter 5.1-6.1 cm × 6.1-7.8 cm, weight 136-187 grams. Smaller or larger, orange to orange-red, cell large oil and more oil, rough skin, crunchy, 2.7-3.5 mm thick, and very easy to peel, flesh sac 10-12 petals, fruit tender, juicy, crisp, slag, sweet; seeds with little or no cotyledons pale green, polyembryonic. If period from November to December. [2] trifoliate bitter taste, can be used for traditional Chinese medicine, Chinese "Spring and Autumn Annals", "South Orange North trifoliate" fable Yanying this story to illustrate the role of the environment. But in fact, orange, trifoliate plants of different genera. Edit this paragraph physiological characteristics trifoliate deciduous shrub or small tree, whole plant glabrous; branches, slightly flat, angular, dense stout spines, thorns 1-7 cm long flat base. 3 lobular compound leaves, alternate; petiole 1-3 cm long, winged; lobular paper or nearly leathery, oval, elliptical or obovate, 1.5 a 5 cm long, 1-3 cm wide, apex rounded and dimpled missing, the base of the wedge-shaped, with blunt teeth or subentire nearly hairless. Flowers solitary or paired, axillary, often before leaves open, yellow-white, aroma; sepals 5, 6 mm long; petals 5, 1.8-3 cm long; stamens 8-20, ranging from the length. Citrus fruit spherical, 3-5 cm in diameter, orange-yellow, with hairs, and aroma. Production in central China, is widely planted as a hedgerow. Fruit for medicinal, broken gas consumer product, and governance rectal prolapse embolism, also can mention organic acids; seed oil; leaves, flowers and fruit peel mention aromatic oils. Multi-cultivation in the wasteland, roadside or garden hedgerow. Shaanxi, Gansu, Hebei, Shandong, Jiangsu, Anhui