[Textual research on the origin and producing area of Baitouweng (Radix Pulsatillae)].

Baitouweng (Pulsatilla Root), a commonly used traditional Chinese medicine, was first recorded in (') . (Bunge) Regel from had become the authentic source for the Baitouweng since the Song Dynasty, which was consistent with the Radix Pulsatillae collected in the . Chuzhou, Anhui province, being regarded as the main producing area in ancient times, had been its genuine producing area since the period of Republic of China. From the Tang Dynasty to Ming Dynasty, the origin of Baitouweng recorded in the works of Chinese materia medica could also include . . and . . Therefore, . in Chuzhou, with large quantity and high quality, is a superior resource that need to increase its protection and further studies, whereas . . and . have better to be used as local drugs.