MOST AVAILABLE TREES FOB PLANTING. 65 



muist soil and in that grows very rapidly. Its peculiar habit 

 of shedding its bark every year especially adapts it to loca- 

 tions in which there is much smoke. The leaves unfold late 

 and are not brilliantly colored in the fall, but the globular 

 fruit which persists through the winter, the free habit of the 

 m e and its vigorous growth, recommend it highly. In some 

 localities a fungus attacks the leaves just after they unfold, 

 but the injury is not apt to be very serious or permanent. 

 (See page 97.) Some planters prefer the European syca- 

 more, or plane tree (P. orientalis, L.), yet its superiority is 

 at least doubtful. It is said that one-third the trees planted 

 in Paris are American sycamores. 



TULIP POPLAR. 



Liriodendron tulipifera, L., a magnificent tree suitable 

 aily for wide avenues with broad grass spaces, or for lawns. 

 It absolutely requires good, well-drained soil ; when that is 

 given it grows with unusual rapidity and forms a tall, 

 straight trunk with a comparatively narrow crown. Under 

 other conditions it suffers from sunburn and many diseases. 



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