? The source is the root bark of Lycium barbarum mill. of Solanaceae. It is a deciduous shrub, with a height of1~ 2m or more, and its branches are drooping and creeping, usually with short spines. Leaves alternate, with 2-3 leaves clustered at the base of branches, the leaves are ovate-lanceolate, the apex is acuminate or slightly obtuse, the base is wedge-shaped, and the petiole is short and entire. At the end of summer, there are purplish red flowers, often 3 ~ 5 axillary. Berries are oval and red when ripe.
Origin and distribution: Shanxi, Henan, Zhejiang, Jiangsu and other provinces. In addition, Anhui, Shaanxi, Hebei, Shandong, Gansu, Hubei, Hunan, Fujian, Guangdong, Guangxi, Yunnan and Guizhou are all distributed.
Identification points: The identification points of genuine Lycium barbarum bark are just as the main characteristics of "the groove skin is white without fragrance but slightly sweet" summarized by the old pharmacist. However, the wrong product, Quan Pi, is "yellow, fragrant and bitter". Both of them have different shapes, so the mistaken product can't be used as Chinese medicine.
Identification of famous books 1 Liang Bielu, a famous doctor, said: "Lycium barbarum was born in Hirazawa, Changshan, and on the banks of various hills. Song Su Song said, "It is everywhere today. Spring seedlings, such as pomegranate leaves, are soft and thin, which are commonly called beets. Its stems are three to five feet high, in clusters, and small red and purple flowers are born in June and July. Casually red and solid, slightly as long as a jujube pit. Its root is called bone. "3 Ming," Materia Medica "said:" People with bones and skins are very cold. That is, this root name is only used for skin. Li Shizhen said, "The scents listed in this Classic are the main indications, covering roots, seedlings, flowers and substance, and there is no difference at first. Later generations took Lycium barbarum as a tonic and Lycium barbarum bark as an antipyretic, which was different at first. "5 Qing" Materia Medica Seeking Truth ":"The cortex Lycii is also the root of Lycium barbarum. "6" Materia Medica Zhengzheng "said:" The cortex Lycii is also the root. The south is slightly bitter and slightly bitter, and the north is bitter and inferior. It is better to use medicine only in the south. 」
Quickly identify it as cylindrical or semi-cylindrical, long and irregular pieces with different lengths. The exterior soil is yellow, the skin is rough and loose, with longitudinal cracks and easy to peel off; The inner surface is yellow and white, relatively flat, with fine longitudinal stripes. Light and brittle, easy to break, uneven section, yellow-white outer layer and gray-white inner layer. Slight breath, slightly sweet taste. It is better to have large slices, thick meat and no wood core impurities.