CONTENTS 



Xlll 



Series B. The Differentiated Dicotyledons 

 Orders 13-24. Kanales to Umbellales 



Series C. The Specialized Dicotyledons 

 Orders 25-32. Ericales to Campanulales 



Chapter XIV. The Ecological Classification of Plants 

 1. The Ecological Groups 



3. 



Plant Habitats and Vegetation Forms . 



(1) The Water Habitats and the Hydrophytes 



(2) The Aerial Habitats and the Aerophytes 

 A. The Optimum Habitats and the Mesophytes 



The Humid-Dry Habitats and the Tropophytes 

 The Dry Habitats and the Xerophytes 

 The Undrained Habitats and the Helophytes 

 The Saline Habitats and the Halophytes 

 The Acid Soil Habitats and the Oxalophytes 



(3) The Organic Habitats and the Hysterophytes 

 A. Habitats of Climbers 



Habitats of Epiphytes 

 Habitats of Half- parasites 

 Habitats of Parasites and Saprophytes 

 Habit of Insectivorous Plants . 

 Plant Formations and Associations 



List of the Principal Formations . 



B. 



C. 



I). 

 E. 

 F. 



PACK 



645 

 546 

 653 

 653 



558 

 558 

 559 

 661 

 664 

 566 

 667 

 569 

 671 

 573 

 673 

 674 

 575 

 576 

 577 

 577 

 678 

 579 

 584 



