CONTENTS. 



PART I. BOTANY. 

 CHAPTER I. PRINCIPAL GROUPS OF PLANTS. 



PAGE 

 I 



Introductory 



Thallophytes 3 



Algse 8 



Fungi i6 



Archegoniates 44 



Bryophytes 45 



Hepaticse (Liverworts) 51 



Musci (Mosses) 53 



Pteridophytes 55 



Filicales (Ferns) 57 



Equisetales (Horsetails) 64 



Lycopodiales (Club Mosses) 66 



Spermophytes ( Seed Plants) 70 



Gymnosperms 71 



Angiosperms 81 



CHAPTER II. OUTER MORPHOLOGY OF ANGIOSPERMS. 



Introductory 91 



The Root 92 



The Stem 100 



The Leaf 106 



The Flower 121 



The Fruit I45 



The Seed 151 



CHAPTER III. INNER MORPHOLOGY OF THE HIGHER 



PLANTS. 



Cell and Cell-Contents 156 



The Cell Wall i^i 



Kinds of Cells 184 



Inner Structure of Members or Organs IQ7 



Plant Metabolism 219 



vii 



