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DISEASES OF CULTIVATED PLANTS 



The white wood of the fir becomes yellow or honey coloured, 

 with scattered patches of light brown, and finally breaks up 

 into irregular pieces under the influence of the mycelium. 

 Pileus 2-4 in. across, fleshy, yellow, with darker scales, 



FlG. in. Pholiota adiposa. i, cluster of fungi ; a, pileus ; b, 

 stem ; half nat. size. 2, section of pileus ; a, a, lamellae or gills ; 

 b t b, veil. 3, spores, highly mag. 



very glutinous; gills yellow, then rusty; stem yellow with 

 rusty scales, ring near apex. 



The following species of Pholiota are sometimes met with 

 growing from wounds on living trees : P. aurivella (Batsch), 

 P. squarrosa (Mull.), and P. destruens (Brond.). 



