CONTENTS 



CHAPTER I 



PAGE 



INTRODUCTORY ASEXUAL PLANTS ..... 1 



CHAPTER II 

 THE DEVELOPMENT OF SEX IN PLANTS AND A STUDY IN EVOLUTION - 28 



CHAPTER III 



SEAWEEDS - - - ... 69 



CHAPTER IV 

 FUNGI AND LICHENS - 90 



CHAPTER V 

 THE ARCHEGONIATES: I. BRYOPHYTES LIVERWORTS AND MOSSES - 120 



CHAPTER VI 



THE ARCHEGONIATES: II. PTERIDOPHYTES FERNS, HORSETAILS, 

 AND CLUB-MOSSES - - - - - 142 



CHAPTER VII 

 PHANEROGAMIA: FLOWERING PLANTS 171 



CHAPTER VIII 



FOSSIL PLANTS - - - - - 219 



vii 



