42 ipostelsia 



almost invariably along the edge. It is seldom 

 met with in this region except as a border tree. 

 The fir, Abies amahilis, occurs frecjuently in the 

 lower forest belt, and then stands in more or less 

 exclusive grou|)s or patches separated from each 

 other l)y stretches of the more general forest. 

 Taxiis hrevijolia is occasionally found as a small 

 sized tree in the lower forest zone. Picea sit- 

 chciisis is the most abundant tree of the lower 

 elevations and seems to attain its typical develop- 

 ment in the immediate vicinity of the sea. Trees 

 with a diameter of 1-2.5 meters and 40-55 meters 

 in height are not uncommon. Thuja plicata 

 also reaches large proportion but is more typical 

 of the higher })laces where it occurs in greater 

 numbers and larger size. 



SJintbby under growth. — Where the forest is 

 very dense as for example along the river val- 

 leys, there is not very much underbrush. On 

 the other liand where there is more space, typical 

 shrubs and underbrush occur abundantly (PI. 

 VL). This underbrush is made up chiefly of 

 the following :- 

 Mains rivularis V accinium ovali folium 



