Michigan Trees - A Handbook Of The Native And Most Important Introduced Species A Handbook of the Native and Most Important Introduced Species

TREES; A HANDBOOK OF THE NATIVE AND MOST IMPORTANT INTRODUCED SPECIES - 1917 - CONTENTS - A Souther11 . Iichigan Woodlot-Frontispiece. Map of Michigan Showing Details Mentioned in the Bulletin ............................................... IV S Introduction .................. . ........................... . v Acknowledgments .......................................... vIr I-IOW to Study the Trees ................................... . IX Artificial Keys, How Made and Used .................... . SVIII Summer Key to the Genera ............................... . X XI Winter Key to the Genera ............................... . XXVTI Manual of Trees Description of Species, with Summer and Winter Keys to the Species .................. . X XXIII Glossary ............................................... . 231 Index to the Artificial Keys.. ............................. . 241 Index . to the Trees ....................................... . 242 Z MAP OF h. IICHIGL4N SHOWING ONLY L OCATION M S E NTION DIN TIIE MANUAL INTROD UCTION The idea of a bulletin on Michigan trees was first suggested by Prof. Volney M. Spalding. It was thought that a bulletin devoted entirely to the study of certain phases of tree life in Michigan would iimulate interest in the study of our trees, and influence many more people to associate themselves with the growing number of tree lovers and with the supporters of the movement for better forest conditions in the state. The bulletin has been under consideration for a number of years and much of the material given herein has been used in the classes in forest botany at the University of Michigan. It remained, however, for the present Curator of the Botanical Garden and Arboretumto get the material into shape for publication, and the present bulletin is the result of his industry and perseverance. The preparation of the drawings and manuscript has been made by him in connection with his work in the Garden. The distinctive feature of the bulletin lies in its keys. The keys commonly published are based upon characters which are present but a short time during the year, or which can be used only by an advanced student of botany. This bulletin presents twoGkeys. One is based upon characters which are present all summer the other uses the winter characters as a basis for . identification. By the use of the keys any person should be able, to name and learn the characteristics of the trees of hlichiga i at any time of the year. These keys sliould prove of special value to our students in the public schools, to members of nature sttidy clubs, and to the students in the forestry schools of the state. The order of arrangenlent and the orne lclatuare esseutially those of Grays New Manual of Botany. Following .. tendency which is steadily gaining favor, all species nalnes are z printed with a small letter, regardless of their origin. For thc convenience of the general reader, other scientific names wliicil are found in botanical manuals i s col stnolt use are printed in - v - parenthesis. In the case of exotics which are not included in the Manual, other authorities have been followed. Sudworths Check List of the Forest Trees of the United States U. S. Dept. Agr., Div. Forestry, Bul. 17 is in most cases authority for the colnmon names. They are names appearing in common use today in sonie part of the state...