Trees for Town and Citi/ Streets. 



39 



which gives an impression of airiness with the shade. It is subject 

 to attack by a fungus that kills the leaves while still small or par- 

 tially mutilates them, giving them an unsightly appearance. In 

 some places this trouble is rather serious. 



The California sycamore is a native of California, adapted to 

 regions 1, 2, 3, and 4, and portions of region 5. It is similar in gen- 

 eral characteristics to the sycamore. 



FIG. 26. London plane trees, Washington, D. C. 



The London plane tree is one of the Old World forms of sycamore 

 (fig. 26). According to Alfred Render, 10 "the true oriental plane is 

 rare in cultivation, the tree usually planted under this name being 

 Platanus acerifolia" It is more compact in habit of growth and has 

 the other good qualities of the sycamore. It is being more and more 

 used on city streets and is proving satisfactory in regions 1, 2, 3, 4, 

 9, 10, 11, and 12. It will probably succeed in the warmer parts of 

 regions 6 and 7 and also in regions 5 and 8. It is a more desirable 

 tree for ordinary use than the sycamore, on account of its more 

 compact habit and comparative freedom from disease, though it is 

 tender in the northernmost sections. 



10 Bailey, L. H., ed, New York, 1916. Standard Cyclopedia of Horticulture, v. 5, 

 p. 2707. 



