Chap. VII] COLD TEMPERATE FOREST FORMATIONS 569 



there commences the famed high-forest of the Sierra Nevada, the home 

 of the ' Big or Mammoth trees.' It is truly a mountain-forest, the climatic 

 conditions of which no longer correspond to those of the neighbouring 

 plain, and therefore, according to the plan of this book, it should be 

 discussed for the first time in the section on mountain vegetation. But it 

 seemed advisable to deal simultaneously with all these North American 

 forests that belong to the type of summer-forest, and are at the same time 



Fig. 311. From the Pacific Interior forest. Park landscape on the Yellowstone River, Rocky 

 Mountains. Pinus ponderosa, Dougl. From a photograph. 



connected oecologically and floristically as well as geographically. The 

 narrow and short forest of the Californian coast has been described among 

 the sclerophyllous forests *. The high-forest of the Sierra Nevada commences 

 in the north to the south of Mount Shasta and extends southwards to 

 about 35 . Prominent in this forest is Pinus Lambertiana, Dougl. (Fig. 

 307). 'which is here most splendidly developed and lends incomparable 

 beauty to this! mountain-forest.' In its company are Pseudotsuga Douglasii, 



1 See p. 535. 



