THE ORNAMENTAL PLANTS — CONIFERS 335 
Scrub pine, P. divaricata (P. Banksiana).* 
A small tree, more odd and picturesque than beautiful, but desirable in 
certain places. 
Mugho pine, P. montana var. Mughus.t 
Usually more a bush than a tree (2 to 12 ft.), although it may attain a 
height of 20-30 ft.; mentioned under Shrubs (p. 334). 
Norway spruce, Picea excelsa.t 
The most commonly planted spruce; loses much of its peculiar beauty 
when thirty to fifty years of age; several dwarf and weeping forms. 
White spruce, P. alba.*t 
One of the finest of the spruces; a more compact grower than the last, and 
not so coarse; grows slowly. 
Oriental spruce, P. ortentalis. 
Especially valuable from its habit of holding its lowest limbs; grows 
slowly; needs some shelter. 
Colorado blue spruce, P. pungens.*t 
In color the finest of the conifers; grows slowly; seedlings vary much in 
blueness. 
Alcock’s spruce, P. Alcockiana.t 
Excellent; foliage has silvery under surfaces. 
Hemlock spruce, T'suga Canadensis.* 
The common lumber hemlock, but excellent for hedges and as a lawn 
tree; young trees may need partial protection from sun. 
White fir, Abtes concolor.*t 
Probably the best of the native firs for the northeastern region; leaves 
broad, glaucous. 
Nordmann’s fir, A. Nordmanniana. 
Excellent in every way; leaves shining above and lighter beneath. 
Balsam fir, A. balsamea.* 
Loses most of its beauty in fifteen or twenty years. 
Douglas fir, Pseudotsuga Douglasi.*} 
Majestic tree of the northern Pacific slope, hardy in the east when grown 
from seeds from far north or high mountains. 
