TABLE OF CONTENTS. 



PAGE 



Introduction ix 



Chapter I. Haunts and Habits of Ferns i 



II. The Organs of the Growing Fern 8 



III. Fructification in Ferns lo 



IV. Germination of Fern Spores ig 



V. Fern Structure 24 



VI. The Fern Allies 28 



VII. Classification and Nomenclature 41 



VIII. The Fern's Place in Nature 54 



IX. Distribution in Time and Space 60 



OUR NATIVE PTERIDOPHYTA. 

 ORDER FILICALES. 



Family i. Ophioglossace^ 66 



2. Hymenophyllace^ 74 



3. Schiz^ace^ 75 



4. Osmundace^ 77 



5. Ceratopteridace.^ 78 



6. POLYPODIACEvE 78 



7. Marsiliace^ 123 



8. Salviniace^ 125 



ORDER EQUISETALES. 



Family I. Equisetace^ 126 



ORDER LYCOPODIALES. 



Family I. Lycopodiace^ 130 



2. SeLAGINELLACE/E : . . . 137 



3. Isoetace^ 142 



Abbreviations 150 



Glossary and Index 151 



vii 



