[Textual research on classical prescription of Acorus tatarinowii]

Based on the prescription books of herbs and medical books of all dynasties,this article makes a textual research on the name,origin,position,quality,collection,processing and concocting of Acorus tatarinowii used in the classical prescription,and clarifies the relationship between ancient and modern,so as to provide reference and basis for the development and utilization of the classical famous prescription.According to research,A. tatarinowii has many aliases and is often remembered as " Chang pu" when use as medicine; It has a wide distribution of resources in our country,all over the country have produced and mostly wild,its producing areas there is a trend of migration to the southeast; It is recorded in the ancient books of Chinese herbs that most of its medicinal parts are roots,and to root thin,solid quality,dense,aromatic smell,full taste,chewing less slag of high quality; It is harvested in February,May,August and December,and dried in the shade after harvesting; Its concocting methods are more than 20 species have been recorded; Before the Tang Dynasty,the basis of the medicinal A. tatarinowii was relatively chaotic,through textual research,it is concluded that A. tatarinowii should be the mainstream in all dynasties,and that its quality is superior to that of other species in the same genus.It is recommended to be used in " Kaixin san" and " rehmannia drink".