THE FORESTS OF HAWAII 



163 



Utilizing these two basic factors of elevation and precipitation 

 for a normal classification of the forests, the following well- 

 defined types may be distinguished: 



1. Littoral. 



a. Humid littoral (windward). 



h. Arid littoral (leeward). 



Fig. 1. View from a mountain slope, showing characteristic arborescent 

 vegetation of lower forest zone (left). A trail through the native Hawaiian 

 forest (right). 



2. Lowlands (up to 1000 to 1500 feet; elevation varying on 

 the different islands). 



a. Humid lowlands (windward). 

 6. Arid lowlands (leeward). 



3. Lower Forest Zone (1000 to 2000 feet; variable). 

 a. Humid section. 



