A Floristic Study of Conservative Plants in Guizhou Province

Based on the red book of Chinese plants (Vol.1) and the list of national protected wild plants, there are 100 species of rare and endangered plants which belong to 48 families, 79 genera in Guizhou. From the statistics and analysis of the areal-types of family, genus and specie, the results indicate as follow: The rare and endangered plants in Guozhou show features of ancient origin and very complex in floristic elements. China-endemic species of rare and endangered plants in Guozhou are abundant. In additon, there are 3 endemic species to Guizhou province, i. e., Abies fanjingshanensis, Thamnocharis esquirolii and Cycas guizhouensis. The Tropical elements account for a great proportion, so the flora shows a tropical floristic feature. Most of the rare and endangered plants in Guizhou are trees, among which tall trees account for a huge proportion. The flora of the rare and endangered plants in Guizhou has the closest relationship with that of Southwest of China, especially with Yunnan. The two provinces share 60 species in common, 60.0% of overall species.