FUNGI AFFECTING THE QUINCE 



The Leaf=blight and Fruit=spot 



Entomosporium maculatum 



The leaves of quinces often become dotted with 

 small round brown spots, resembling Fig. 23, which 



gradually become more numerous, 

 and may finally run together to 

 form large blotches, as shown in 

 Fig. 21 (p. 41), inyolving, occa- 

 sionally, the whole leaf, and caus- 

 ing the premature dropping of 

 the foliage. This is the same 



fungus that causes the leaf-blight 

 of the pear, and the main points 

 in its development have already 

 been described (pp. 41-44). 

 Quince fruit, as well as foliage, is 

 attacked by it, the effect on the 

 FIG. 23. QUINCE LEAF-BLIGHT fl.^it bclug secniu small brown, 

 or blackish spots which appear on the surface, and have 

 given the disease the name of fruit-spot. Several of 

 these spots frequently run together, and sometimes a 

 large part of the surface becomes affected. The fungus 

 dwarfs the fruit, and renders it less salable. The defo- 

 liation of the trees, of course, greatly reduces their 

 vitality. Young quince trees in the nursery are espe- 

 cially liable to injury by this disease, as it causes the 



47 



