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历代本草古籍中所载的大戟药用来源繁多,本草研究表明,历代所用主流品种即为大戟科植物大戟Eu-phorbiaceae pekinensis Rupr.,2005年版中国药典所载红大戟为茜草科植物Knoxia valerianoides Thorel.,此为晚近出现的新兴品种。从产地考证可知,其药用历史以江苏、安徽、山西等地比较悠久,这与现时京大戟的主产区相符。江苏、安徽应该是京大戟的道地产区。
The ancient medicinal herbs contained in the ancient books of ancient herbs have a wide range of medicinal sources. According to the study of Materia Medica, the mainstream species used in the past dynasties are Eu-phorbiaceae pekinensis Rupr., and the 2005 edition of the Chinese Pharmacopoeia contains red daphnia as a plant of Rubiaceae. Knoxia valerianoides Thorel. This is a newly emerging species. From the examination of origin, we can see that its medicinal history is relatively long in Jiangsu, Anhui, and Shanxi, which is in line with the current main production area of Beijing University. Jiangsu and Anhui should be the real estate areas of Beijing Daxu.