• Tree Book Home • Introduction • How to Use the Tree Book • What are the Parts of a Tree? • What to Look For • Index of Trees — Keys for Identifying Trees • Classifying the Natural World • What is an Ecosystem? • Trees can be Choosy • Time Changes Everything • Biogeoclimatic map of British Columbia • Search the Tree Book • Acknowledgements • Other Useful References   Search the Tree Book Keyword search for these words: