220 THE BOOK OF EVERGREENS. 



The foliage is more nearly allied to P. JVbrdmanniana 

 than to P. nobilis. 



This species was introduced into England in the year 

 1861 ; and we have strong hopes it may succeed with us 

 in the Middle States, but we are not aware that it is yet 

 in any American collection. 



40. A. COncoIor. Syn. Picea concolor, Engelmann. 

 This species is one of the recent discoveries in New Mexico, 

 and is described by Engelmann as forming a tall tree on 

 the mountains of that region, and somewhat resembling 

 A. grandis in foliage. It was named Pinus concolor by 

 the discoverer. 



41. A, glaucescens, Roezl. This new Fir was found by 

 the discoverer, Roezl, on the Monte de las Cruces, in Mexico, 

 and described by him as having silvery-white foliage. It 

 is, no doubt, according to his statements, very beautiful, 

 but we judge not at all suited to our climate. 



This species has been sent to England by Roezl, under 

 the various names of Abies Tlapcdcatuda, A. hirtella, 

 and A. glauca. The discoverer says of it, " The leaves are 

 so glaucous or silvery on each side, that at a great distance 

 one would declare the trees were covered with snow, and 

 that they are much whiter than the Cedrus J)eodara, on 

 closer inspection." 



3. CEDRUS, Link. CEDAR. 



Leaves, rigid and persistent. Scales of the cone, closely 

 appressed. Seeds, adhering to the base of their lacerated 

 membranaceous wings ; testa filled with balsamiferous 

 vesicles. Carpels, separating from the axis. Male aments, 

 from the apex of the one year old branchlets, almost bien- 

 nial. 



Although the older authors have classed the Cedars un- 



