December 27, 1912 



i«7 



axpect the western tree»to be distinct. True A. conco/or TMi^es 

 from Utah and southern Colorado throngh New Mexico and 

 Arizona into northern Mexico. A. Lowiana ranges from the 

 Cascaties of middle Oregon to northern Lower California. There 

 is no connecting link through Washington, Idaho and Montana, 

 as is the 'Case in all the other conifers common to both the Pa- 

 cific slope and the Rocky mountain region. 



The tree is common in western Nevada, scattered individu- 

 als occurring as low as 5000 feet, which is about the lower .Hmit 

 abio of the yellow pines. At about 5500 feet it becomes more 

 frequent, and from 6000 to 7500 feet is abundant, often being 

 the predominant tree. With us its upper limit is about 8000 



Figure 25. Abies l.owiaua. Mature tree near Verdi, Nevada 

 feet^* where, it is replaced b\ the red t\i, Ahies mag.nijica. At 

 certain iptflces it is rareh- tUund above 75o.)'feet. 



At ils lower limit it is fotintl only in protected gulches 

 along streams, hut with an increase iti elevation and atmospheric 



