CONTENTS. 



PAGE 



Preface iii 



PART I : THE PLANT BODY. 



Chapter I. Introduction i 



II. Single-celled plants and colonies ... 6 



III. Filamentous alg^ i6 



IV. The thallus of the higher alg^ . . .23 

 V. The fungus body .30 



VI. Liverworts and mosses 41 



VII. Fernworts and seed plants . . . -53 



VIII. The root 59 



IX. The shoot 72 



X. The stem 81 



XI. The leaves 96 



PART II: PHYSIOLOGY. 



Chapter XII. Introduction 115 



XIII. The maintenance of bodily form . . .119 



XIV. Nutrition 124 



XV. Growth . . .... 154 



XVI. The movements of plants .... 164 



PART III: REPRODUCTION. 



Chapter XVII. Vegetative reproduction . . . .185 

 XVIII. Sexual reproduction 218 



PART IV • ECOLOGY. 



Chapter XIX. Forms of vegetation 237 



XX. Mesophytes 231 



XXI. Xerophytes and halophytes .... 237 



V 



