The paper surveys 68 rare and endangered plants in the 40 districts and counties (autonomous county or city) that are under jurisdiction of Chongqing City. The researcher looked into each plant's morphological characteristics, geographic distribution, habitat, ecological features and present situation of protection by consulting with literatures, visiting herbaria and arboretums, and going out for field trips. Then, the researcher analyzes the floristic features and the reasons of endangering of those plant...