conifers. SILVA OF NORTH AMERICA. 25 



Pinus monticola was discovered by David Douglas * in 1831 on the mountains near the Columbia 

 River, and was introduced by him into English gardens. It is perfectly hardy in central and northern 

 Europe, where large specimens may now be seen ; 2 and in the eastern United States it is hardy, and 

 produces its cones as far north, at least, as eastern Massachusetts. In eastern plantations it grows more 

 slowly, and is less beautiful than Pinus Strobus, and is hardly distinct enough in habit from this 

 species to make its cultivation as an ornamental tree desirable. 



1 See ii. 94. - Fowler, Gard. Chron. 1872, 1071. 



