CONTENTS 



CHAPTER I 

 Introduction i 



CHAPTER n 

 MusciNE.E (Bryophyta) — Hepatic.^ — AIarchantiales 8 



CHAPTER HI 

 The Jungermanniales 72 



CHAPTER IV 

 The Anthocerotes 120 



CHAPTER V 

 The Mosses (Musci) : Sppiagnales — Andre^ales 160 



CHAPTER VI 

 The Bryales = 188 



CHAPTER VII 

 The Pteridophyta — Filicine.e — Ophioglossace^ , 229 



CHAPTER VIII 

 Marattiales 273 



CHAPTER IX 



t'lLICINE^ LePTOSPORANGIAT^ 305 



CHAPTER X 

 The Homosporous Leptosporangiat^e (Filices) 346 



CHAPTER XI 

 Leptosporangiat.e Heterospore.e (Hydropterides) 396 



CHAPTER XII 

 Equisetine^ 443 



CHAPTER XIII 

 Lycopodine^ . . . , 483 



CHAPTER XIV 



ISOETACE^ 536 



CHAPTER XV 

 The Nature of the Alternation of Generations 562 



CHAPTER XVI 

 Fossil Archegoniates 576 



CHAPTER XVII 

 Summary and Conclusions 592 



vii 



