ILLINOIS TREES: SELECTION. PLANTING, AND CARE 



47 



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Fig. 48. — Ohio buckeye 

 is an attractive tree with 

 compound leaves made up 

 of five long leaflets (in- 

 set). Its use is limited in 

 ornamental plantings be- 

 cause the leaves are fre- 

 quentlv damaged by leaf 

 blotch." 



by timely applications of a fungicide such as zineb or ziram. 

 The poisonous nuts and bark should be kept awaj^ from cattle. 

 The light wood, although close grained, is weak and soft. Because 

 of its whiteness it may be sold as basswood. It is used in the 

 manufacture of woodenware of various kinds, drawing boards, 

 and paper pulp. 



Catalpa 



Western (Catalpa speciosa) and common (C. bignonioides) 

 catalpa (Indian bean) are planted occasionally as specimen trees 

 because of their profuse, showy flowers. Also, catalpa will with- 

 stand crowded city and industrial conditions better than many 

 other trees. However, the flowers cover the ground when they 

 fall in the spring, and the long beans or fruits and the large 

 leaves are a nuisance in the fall. Catalpa (Fig. 49) is a tree of 

 moderate height but occasionally it may become exceptionally 

 tall, reaching a height of 80-90 feet. 



The heart-shaped leaves (Fig. 49 inset) are either opposite 

 or three-whorled around the branch. The long-pointed leaves of 

 western catalpa are 10-12 inches long and 7-8 inches wide, while 



