Summary of Formations. 
1. Climatic (controlled by climatic factors) 
The woods or forest formation. 
The prairie formation. 
The plains formation. 
The desert formation. 
The Arctic-Alpine formation. 
peoine (controlled by ground factors) 
6. Edaphic or soil plant formations. 
a. Rocky places. 
GENERAL b. Sdnd areas. 
FORMATIONS c. Marshes, moors, meadows. 
d. Alkaline areas, etc. 
3. Aquatic (controded by bodies of water) 
7. Uhe aquatic formation: 
a. Fresh water formations. 
b. Salt water formations. 
4. Culture (controlled by man). 
8. The culture formation. 
a. Cultivated areas. 
b. Waste areas. 
WR wD 
iS 
BR 
\ 
Principal Formations (society) (controlled chiefly by distinct 
physiographic areas). 
In eavenede 
2. Zoned. 
3. Built up of vegetation forms. 
Individual Formations (controlled by physical and biological 
factors). 
tee lWanvenede 
2 Zoned: 
(One or several facies make up the formation). 
Terminology of plant communities. 
Compiex character of plant societies. 
XIV. FOREST SOCIETIES. 
1. General Character of Morest Socitentes: 
1. Extent of forest societies. 
2) Complexity of the forest. 
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