CONTENTS 



Pi 



Chapter I — Introduction 1 



The Geological Record 



Succession of Plants in Geological Time 4 



The First Land Plants 7 



Existing Factors in Distribution [g 



Man and the Plant World 17 



Chapter II — Climatic Zones 



The Boreal Regions 



The Arctic Zone j; 



The Sub-arctic : ; 1 



Alaska 



Chapter III — The North Temperate Zone \:> 



Eurasia and North Africa 



Western and Central Europe }•; 



The British Islands ."1 



The Mediterranean Flora 



The Iberian Peninsula 5 1 



Northern Africa 



The Atlantic Islands 



The Eastern Mediterranean 



The Himalayan Regions 



Eastern Asia 7 1 



Japan 7 8 



Siberia . , 



Chapter IV — North Temperate Zone (continued B4 



Atlantic and Central United States and Canada 



Eastern United States and Canada ss 



The Coastal Plain 100 



The Gulf States I< 



The Prairie Region 1 ( ' 



Florida HO 



vii 



J 



