PLATE 40.— FUNGOUS DISEASES. 





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Living Apple with fruiting body of False-Tinder Fungus (PyroPolyporus igniarius) . 2. 

 Cross-section of living Beech diseased by PyropolyporKS igtiiarius. Fruiting body is 

 seen on the outside. 3. Living Sugar Maple with fruiting bodies of Hydumn scptentri- 

 oHc/e causing Heart-Rot of Sugar Maple. 4. Cross-section of same Sugar Maple as 3, 

 two feet above fruiting bodies, showing centre rotted lay mycelium of Hydunm septentn- 

 onaJc, 5. White Oak, with fruiting body of Dcedalca quercina growing out of a knot- 

 hole. 6. A longitudinal and transverse section of the white oak in 5, two feet below 

 fruiting body, showing the disintegration of the wood by the mycelium of Dcedalea 

 (fucrcina. 



