ABIES CONCOLOR, A. FIRMA. 



95 



That the concolor of Colorado cannot be specifically separated from 



the Californian Lotciana, &c, seems 

 to be now conclusively established, 

 but whether the tree is spread con- 

 tinuously- through the extensive 

 region assigned to it by Dr. Engel- 

 mann, or occurs with greater or less 

 interruptions between the extreme 

 eastern and western limits, does not 

 appear to be clearly made out. 

 When the region has been more 

 completely explored, it is not im- 

 probable that other forms may be 

 met with. 



Frequent importations of seed 

 from California and other localities 

 have caused Abies concolor to be 

 very generally distributed over Great 

 Britain. It is quite hardy and 

 grows well in many soils and aspects. 

 It is a beautiful Conifer for the 

 lawn and park, but to secure well- 

 furnished specimens, a space with a 

 radius greater than 15 feet should 

 be allowed for it, as the lower 

 branches of some of the finest 

 growing in England have attained 

 that length. 



The specific name concolor " of 

 similar or like colour " refers to 

 the leaves, which in the New 

 Mexican and Colorado varieties are 

 very glaucous, so that both sides 

 are nearly alike in colour. 



Abies firma (hitherto distributed 

 under the name of A. bifida), is a 

 stately tree of the habit of the 

 common Silver Fir, attaining, in 

 favoured localities in its native 

 country, a height of 150 feet. The 

 Fig. i6.-cone of AUe» firma, from the iow-iands branches are horizontal, robust, and 



of Nippon, Natural Bize. n *j_i v i j. i it 



covered with light brown bark, 

 slightly furrowed by the decurrent pulvini or cushions, from which the 





