Discover the secrets and beauty of the world’s rarest trees in this fantastic book filled with more than 300 color photographs.Forests cover nearly a third of the world's surface, and the trees that make them up include a staggering diversity of more than 60,000 species. Individual trees play specific ecological roles in their unique environments—and they have adapted to thrive on steep mountains, in cloud forests, on dry savannahs, in parched deserts, and in tropi...

This book provides a general overview of the natural landscapes and vegetation types of the U.S., the key plant species that help define them, the pressures faced by natural ecosystems and the imperative for conservation and restoration. It addresses the policies that have been introduced to manage healthy ecosystems and the practical progress that is being made in restoration. A particular focus is on the production of diverse native plant materials currently required by the National Seed...

Only a green world, rich in plants, can sustain us and the millions of other species with which we share this planet. But, in an era of global change, nature is on the retreat. Like the communities they form, many plant species are becoming rarer, threatened even to the point of extinction. The worldwide community of almost three thousand botanic gardens are holders of the most diverse living collections of plants and have the unique potential to conserve plant diversity. Conservation biol...