Trees and Timber 



391 



LINDEN 



Leaf-spot (Cercospora microsora Sacc). — Small, circular 

 or large, irregular, dead spots of the leaf indicate the presence 

 of this disease. It has been reported as destructive in Mas- 



FiG. 207. — Mistletoe. After U. S. Bur. PI. Ind. 



sachusetts. New Jersey, and New York. Two sprayings in 

 Massachusetts resulted in longer retention of the foliage and 

 lessened infection. 



LOCUST 



Yellow wood-rot "^^^ (Fomes rimosus Berk.). — From 

 Massachusetts to New Mexico, over the entire black locust 

 territory, this heart-rot prevails. It is a yellow rot extending 



