250 TREES 



The Engelmann Spruce 



P. Engelmanni, Engelm. 



The Engelmann spruce is the white spruce of the Rocky 

 Mountains and the Cascade Range of Washington and 

 Oregon, which forms great forests on high mountain slopes 

 from Montana and Idaho to New Mexico and Arizona. 

 Always in damp places, this thin-barked beautiful tree is 

 safest, from fire. The leaves are blue-green, soft and 

 flexible but with sharp callous tips. The cones are about 

 two inches long, their thin scales narrowing to the blunt 

 tips. Each year a crop of seeds is cast and the cones fall. 

 Running fires destroy the seed crop with the standing 

 trees, making renewal of the species impossible in the 

 bumt-over tracts. For this reason, this beautiful spruce 

 tree is oftenest found on the higher altitudes, or where wet 

 ground and banks of snow defend it from its arch enemy. 

 The tree is satisfactory in cultivation, but never equal to 

 the wild-forest specimens. The wood is used locally for 

 building purposes, for fuel and charcoal. 



The Blue Spruce 



P. Parryana, Sarg. 



The blue spruce well known in Eastern lawns as the 

 "Colorado blue spruce," is a crisp-looking, handsome tree, 

 broadly pyramidal, with rigid branches and stout horny- 

 pointed leaves, blue-green to silvery white, exceeding an 

 inch in length. At home on the mountains of Colorado, 

 Utah and Wyoming, it reaches a hundred to a hundred and 

 fifty feet in height and a trunk diameter of three feet, and 



