Contents 



3 

 4 



5 

 6 



7 



Preface 



Introduction 



Psilophytopsida 



Psilotopsida 



Lycopsida 



Sphenopsida 



Pteropsida 



General Conclusions 



Bibliography 



Index 



9 

 II 



28 



38 

 50 



94 



114 



175 

 183 

 189 



807^18 



