[New theoretical study on the biological origins of Chinese medicinal herbs].

Following the theses on "A theoretical study of the biological origins of Chinese medicinal herbs" in 1991, the authors continued the study and established eleven new views, namely; "The theory of differentiation tendency of Chinese medicinal herbs for regional habitually used drugs"; "The theory of regularity of occurrence of confusing species and pseudo materia"; "Discussion on rich resources of new drugs from old sorts of traditional Chinese medicine"; "The theory of knowledge of substitutes for Chinese medicinal herbs", etc.