CONTENTS 



DIVISION III 

 PTERIDOPHYTA 



CHAPTER PAGE 



XX. Lycopodiales. Club-Mosses ------ 316 



XXI. FiLiCALES. Ferns -------- 326 



DIVISION IV 

 BRYOPHYTA 



XXII, Musci AND Hepaticae : Mosses and Liverworts - - 353 



DIVISION V 

 THALLOPHYTA 



XXIII. Thallophyta — Introductory - - - - - - 371 



XXIV. Brown Algae (Phaeophyceae). [Red Algae (Rhodo- 



phyceae)] - 377 



XXV. Green Algae (Chlorophyceae) - - - - - 390 



XXVI. Fungi — Introductory ---._. - 402 



XXVII. Phycomycetes --------- 413 



XXVIII. Eu-mycetes — (a) Ascomycetes ------ 429 



XXIX. EU-MYCETES (b) BaSIDIOMYCETES ----- 441 



XXX. SCHIZOPHYTA - - - - - -- - - 456 



GENERAL CONCLUSION 



XXXI. Sex and Heredity - - - - - -- - 461 



XXXII. Alternation of Generations, and the Land-Habit - 479 



Appendix A. Types of Floral Construction in Angio- 



SPERMS ---------- 492 



Appendix B. Vegetable Food-Stuffs - - - - 540 



Index and Glossary .___-_- 549 



