CONTENTS xi 



PAGE 



XIII. The Cellular Anatomy of the Root . . 226 



XIV. The Anatomy and Morphology of the Flower . . 233 

 XV. The Morphology and Ecology of the Flower . . 240 



XVI. The Morphology and Ecology of the Flower Con- 

 tinued ........ 244 



XVII. The Morphology and Ecology of the Fruit . . 247 



DIVISION II 

 THE NATURAL HISTORY OF THE GROUPS OF PLANTS 



I. The Algae .... . 250 



II. The Fungi ... . 256 



III. The Lichens .258 



IV. The Bryophytes ... . 259 

 V. The Pteridophytes . . . 260 



VI. The Gymnosperms . . 261 



VII. The Angiosperms . 262 



INDEX 267 



