Fig. 2i. Southern slojx? in the Lolo Valle> . 

 Pinus pnnderosa. Chr_iii:oOiamiiii.i n<7i(.-'(>o,'« 

 in the foreground. Aueust. 



P^tudot^u*ja and 

 und Aiiropi/ron n-pica^inn 



132 



