2. Different lengths: Bupleurum root is cylindrical, with a length of 15-40cm and a diameter of L-2.5 cm, and most of the branched roots have been broken. Bupleurum chinense is cylindrical or rectangular conical, with a length of 6 ~ 15 cm and a diameter of 0.3 ~ 0.8 cm.
3. Different characters: the surface of Bupleurum chinense is dark brown or light brown, with longitudinal wrinkles, branch root marks and lenticels. Bupleurum bark is very thin, and xylem has yellow-white radial texture (alternately produced by rays and xylem bundles). The gas is slightly light and sweet.
Extended data:
Precautions:
1, hyperactivity of liver yang, hyperactivity of liver wind, hyperactivity of fire due to yin deficiency, and upwelling of qi are prohibited or used with caution.
2, Bupleurum, Gleditsia sinensis, Ewan, Veratrum.
3. dried rhizome of Bupleurum 3.DC. There are dense links on the surface, which are toxic and cannot be used as Bupleurum DC.
4, adrenocortical hormone syndrome, depression and infants, the elderly should not take a large number of long-term use.
5, Bupleurum is light and thin, scattered and dry. Therefore, people with deficiency of true yin, hyperactivity of liver yang and erosion of tongue and mouth should avoid taking a large amount of Bupleurum for a long time. Bupleurum can lower blood pressure and slow down heart rate, so it is not suitable for patients with hypotension and cardiac insufficiency to use this preparation in large quantities or for a long time. Bupleurum chinense can raise blood sugar, so diabetic patients should use it with caution.
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Baidu encyclopedia-Bupleurum chinense