CONTENTS 



DIVISION III 



PTERIDOPHYTA 



:UAI'll^l; I'AliE 



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 



XXYII. Phycomycetes --------- 413 



XXVIII. EU-MYCETES (a) ASCOMYCETES ------ 429 



XXIX. Eu-MYCETES (6) BaSIDIOMYCETES ----- 441 



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



GENERAL CONCLUSION 



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



XXXII. Alternation of Generations, and the Land-Habit - 470 



Appendix A. Types of Floral Construction in Angio- 



SPERILS ---------- 4Q2 



Appendlx B. A'egetable Food-Stuffs - - - - :;4o 



Index and Glossary .------ -4^3 



