PLATE 11 



rig. 1. A typical stand of limber pines (Pinus flexilis), altitude 9000 

 feet, Pine Porest Mountains, Humboldt County, Nevada; July 1, 1909. 

 The species of birds seen most commonly in this type of environment 

 were Carpodacus cassini, Colaptes cafer collaris, Empidonax wrighti, and 

 Nucifraga Columbiana. 



Pig. 2. Veratrum calif ornieum on Duffer Peak Meadow (Camp no. 5; 

 8400 feet altitude). Pine Porest Mountains, Humboldt County, Nevada; 

 July 11, 1909. The conifers at the left are Pinus flexilis. The brush- 

 like vegetation in the baokground is made up of dwarfed Populvs tremu- 

 loides. This was the collecting station having the greatest number of 

 Boreal species. Junco oreganus thurheri, Penthestes gambeli gambeli, 

 Nucifraga Columbiana, ZonotricMa leucophrys leucophrya, Microtus mordax, 

 Zapus princeps oregonus were all taken in the neighborhood. 



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