10 The New York State College of Forestry 



TABLE OP^ CONTENTS — (Continued) Page 



Leaf Key to the Species 55 



Fruit Key to the Species 63 



Twig Key to the Species 69 



Plates with Legends and Tabulated Descriptive Information 75 



Conspectus of the Families and Genera which include the Native and 

 Naturalized Trees of New York State with Analytical Keys leading 



TO THE Species 344 



Tree Zones and Tree Distribution in New York State 390 



Development of Dendroid Plants 390 



The Climax Forest 391 



Factors Governing Distribution of Forests 392 



Trans-continental Belts or Life Zones 393 



Distribution of Life Zones in New York State 394 



Bray's Life Zones in New York State 397 



Tree Eanges versus Life Zones in New York State 370 



Map of New York State Showing Location of Tree Zones 370 



Derivation of the Names of Trees 371 



Linguistic sources of tree names 371 



Explanation of terms used in the glossary 373 



Glossary of Derivations 374 



General Glossary 386 



Index 393 



