CONTENTS. 



Preface 



PAGE 



, iii 



PART I: THE PLANT BODY. 





Introduction : The unit of structure 

 Chapter I. Single-celled plants and colonies 

 II. Linear and superficial aggregates 



III. The thallus of the higher alg,e . 



IV. The fungus body of hyphal elements 

 V. Liverworts and mosses 



VI. Fernworts and seed plants 



VII. The root .... 



VIII. The shoot .... 



IX. The stem .... 



X. The leaves .... 



17 

 26 



39 

 49 

 60 



65 



82 



96 



"7 



PART II : PHYSIOLOGY. 



Chapter XL Introduction : The unit of function 

 XII. The maintenance of bodily form 



XIII. Nutrition 



XIV. Growth 



XV. The movements of plants 



143 

 147 

 151 



178 

 188 



PART III: REPRODUCTION. 



Chapter XVI. Introduction : Reproductive structures . 209 



XVII. Vegetative reproduction . . . .211 



XVIII. Sexual reproduction * . . . . 268 



ix 



