104 THE TEACHING BOTANIST 



E. Locomotion. 



a. Of pollen. 



b. Of seeds and some vegetative parts. 



F. Protection. 



a. Against weather conditions. 



b. Against living enemies. 

 Division III. 



The Natural Groups of Plants. (Natural History of Plants.) 



A. The Algae. 



B. The Fungi. 



C. The Lichens. 



D. The Bryophytes. 



E. The Pteridophytes. 



F. The Sperm atophytes. 



I. Floristic Divisions. 

 II. Ecological Divisions. 

 Mesophytes. 

 Hydrophytes. 

 Xerophytes. 

 Halophytes. 

 Climbers. 

 Epiphytes. 

 Parasites. 

 Insectivora. 

 Myrmecophila. 

 Etc. 



Of course this plan is too comprehensive to be carried 

 out in its entirety in a teaching collection, and it is 

 offered but as a suggestion. In a large public museum, 

 other sections, to illustrate palaeontology and economics, 

 would be added, together with the fullest representation 



