The scientific names of Illicium verum are Illicium verum and Fennel. In recent years, the phenomenon of using weeds as aniseed has been found in the market. Weeds contain weed toxins, which can easily lead to poisoning. Its symptoms appear 30 minutes after eating, ranging from nausea and vomiting to irritability, dilated pupils, foaming at the mouth, and finally blood pressure drops, breathing stops and death.

Look at the shape, identify the aroma: Illicium verum (fennel) petal angle is neat, generally 8 angles, the petal is thick, the sharp angle is straight, and the pedicle is curved. Sweet taste, rich and special aroma; Mangrove (Illicium verum) petals are irregular, mostly more than 8 petals. Petals are slender, with a pointed eagle mouth, extremely wrinkled appearance, flat and slightly bitter pedicels, and there is no unique fragrance of octagonal.

Identification of coarse powder: it is best to take a little coarse powder and add 4 times of water, boil it for 30 minutes, filter it and heat it to concentrate, and the octagonal solution is brown; The solution of weeds is light yellow.