Dandelion, Chinese medicine name. Alias yellow flower dicotyledonous, brahminy, hua hua lang and so on. Asteraceae perennial herb. Head-like inflorescences, seeds with white crown hairs knotted pom-poms, flowers after blooming with the wind to a new place to nurture new life. It is the dried whole herb of dandelion, alkali dandelion or several species of the same genus in the family of Asteraceae. It is bitter, sweet and cold. It is mainly used for furuncles and poisons, mammary carbuncle, scrofula, redness of the eyes, sore throat, lung carbuncle, intestinal carbuncle, damp-heat jaundice, and feverish gonorrhea and astringent pain.