Survey of resources of medicinal plants of Cynanchum L in Gansu Province / 中草药

Object To gain a clear idea on the resources of medicinal plants of Cynanchum L (Asclepiadaceae) in Gansu Province Methods Field investigation, specimen collection, taxonomic study and literature retrieval were carried out Results The distribution, ecological environment and medicinal parts of 18 species and 1 variety of 6 sections, including 17 medicinal plants, 2 Gansu newly recorded species have been clarified Conclusion The investigation may prove to be useful for the utility and further study of Cynanchum L in Gansu Province