50 THE CULTIVATED EVERGREENS 



It forms a narrow pyramidal outline. The leaves are dense 

 and bluish-green, and it is quite hardy. It has attained a height 

 of thirty-four feet in the Pinetum in twenty-six years. 



The lace-bark pine, Pinus Bungeana, from China, has 

 slender curving branches and forms a dense tree. When it 

 passes the juvenile state, the bark of the main bole begins to 

 assume a peculiar, flaky, light gray aspect. It grows slowly and 

 has a bushy appearance for a number of years. It is quite 

 hardy. The bark on the stems of adult trees in China is said 

 to be white. 



The pitch pine, Pinus rigida, native throughout the North- 

 eastern States, is likely to be despised by some planters, but 

 it adds a picturesque appearance in adult age to the landscape. 

 It will grow and look happy in pure sand. It is, therefore, to 

 be recommended for sandy areas and slopes. 



The knob-cone pine, Pinus attenuata, has done surprisingly 

 well in the Pinetum. It is mostly native west of the Cascade 

 Range. It is now twelve feet tall, and has been growing for 

 eighteen years. It has been badly browned in severe winters, 

 but has always recovered. 



Coulter pine, Pinus Coulteri, and Sabine pine, P. Sabi- 

 niana, beautiful three-leaved species from the West, did very 

 well in the Pinetum for about seven years, but were killed out- 

 right by a severe winter. 



Amongst the two-leaved species, the red or Norway pine, 

 Pinus resinosa, native throughout the Northeastern States to 

 Newfoundland, is perhaps the most useful for ornamental 

 planting. It is very hardy and adapts itself to many situations 

 and soils. It appears to do remarkably well in clay soil. When 

 isolated it forms a broad round head towards adult age. The 

 foliage is abundant and massive. For the landscape-gardener 

 this is a most important pine for bold effects. 



