Xll TABLE OF CONTENTS. 



CHAPTER XXXII. 



PAGE 



Comparison of Ferns and their Relatr'es 292 



Classification of the Pteridopliytes 295 



CHAPTER XXXIII. 

 Gynmosperms 297 



CHAPTER XXXIV. 

 Further Studies on Gymnosperms 311 



CHAPTER XXXV. 

 Morphology of the Angiosperms: Trillium; Dentarl'. 318 



CHAPTER XXXVI. 

 Gametophvte and Sporophyte of Angiosperms 325 



CHAPTER XXXVII. 



Morphology of the Nucleus and Significance of Gaiietophyte 



AND Sporophyte 340 



PART III. PLANT MEMBERS IN RELATION 

 TO ENVIRONMENT. 



CHAPTER XXXVIII. 



The Organization of the Pl.ant 349 



I. Organization of Plant Members 349 



II. Organization of Plant Tissues 356 



CHAPTER XXXIX. 



The Different Types of Stems 365 



I. Erect Stems 361; 



II. Creeping, Climbing, and Floating Stems 369 



III. Specialized Shoots and Shoots for Storage of Food 372 



IV. Annual Growth and Winter Protection of Shoots and Buds.. . :;74 



chapt1';r xe. 



Foliage Leaves 383 



I. f;eneral Form and Arrangement of Leaves 3S3 



II. Protective Modifications of Lea\'es 393 



III. Protective Positions 395 



IV. Relation of Leaves to Light 397 



V. Leaf Patterns 404 



