HICKORY DISEASES 189 



Repehbnce on Leaf-Mildew and Witches'-Broom 



Stewart, F. C. Witohes-brooms on hickory trees. Phytopathology 

 7 : 185-187, flg. 1. 1917. 



Common White Wood-Rot 



Caused by Fames igniarius Fries 



The heartwood of hickory is sometimes reduced to a white 

 soft punk by the false-tinder fungus. This rot is more common 

 and destructive to beech, poplar, oak and maple. The sporo- 

 phores and appearance of the white rotted wood are described 

 under poplar diseases, page 305. 



