books.google.it - This book represents the most comprehensive compilation of data on threatened vascular plants ever published. It includes the names of some 33,000 plant species determined to be rare or threatened on a global scale. Conservation assessments were provided by the IUCN Species Survival Commission, the National...http://books.google.it/books/about/IUCN_Red_List_of_Threatened_Plants.html?id=XIL9adYYeSIC&utm_source=gb-gplus-shareIUCN Red List of Threatened Plants
