viii CONTENTS 



CHAPTER PAGE 



XIV. THE DEFENSIVE EQUIPMENT OF PLANTS - - 135 



XV. THE STORAGE OF FOOD-RESERVES ECONOMIC BOTANY - 145 



XVI. REPRODUCTION MODES OF VEGETATIVE REPRODUCTION - 153 



XVH. REPRODUCTION BY SEED POLLINATION - - 162 



XVHI. FRUITS AND SEEDS - - - - - 183 



PAET III 



THE BRITISH FLORA : ITS EVOLUTION AND PRESENT 

 DISTRIBUTION 



XIX. VARIATION AND THE EVOLUTION OF SPECIES - - 201 



XX. THE ORIGIN OF THE BRITISH FLORA - 207 



XXI. THE CLASSIFICATION OF PLANTS- - 217 



XXII. PLANT ASSOCIATIONS AND FORMATIONS - - 223 



XXIII. AQUATIC VEGETATION - - 233 



XXIV. VEGETATION OF THE MARSH AND BOG - - 240 

 XXV. MOORLAND ASSOCIATIONS - - 248 



XXVI. GRASSLAND ASSOCIATIONS - 257 



XXVII. WOODLANDS - - 265 



XXVIII. MARITIME ASSOCIATIONS - - - 275 



XXIX. VEGETATION OF ROCKS AND WALLS - 286 



XXX. HEDGEROWS CULTIVATED AND WASTE LAND - 292 



GENERAL INDEX - - 299 



INDEX TO NAMES OF PLANTS IN PART III - - 319 



