The Botrytis Blight of Tulips 



323 



On the leaves 



On the leaves the lesions show first as minute, yellowish spots, some- 

 what elongate in the direction of the leaf veins and surrounded by a darker, 



Fig. 25. botrytis blight lesions on the leaves 

 Lesions of a more advanced stage of development. One-half natural size 



water-soaked area. They are slightly sunken and give the leaf a speckled 

 appearance. As they enlarge, the areas become more depressed, the 



