SHADE TREE AND TIMBER DESTROYING FUNGI. 227 



an easy matter to trace the connection of the punk in the log 

 with the fruiting body in all cases. 



POLYPORUS PINICOLA ON BROAD-LEAVED TREES. 



I have not found any record of Poly poms pinicola on broad - 

 leaved trees. I have, however, found it on three different 

 species in the Adirondack Mountains, on the beech {Fagusferru- 

 gined], the birch (Betula lento), and the maple (Acer saccharum). 



TRAMETES ABIETIS. 



This plant is common on spruces and balsams. It is a shelving 

 form, and much smaller than the species of polyporus just 



86. Fruit body of Tramates abietis spread out on surface of -limb. 



described. The caps stand out from the wood 2 to 5 cm., are 

 somewhat triangular in side view, and broader than long. The 

 base is usually spread out where it is attached to the tree, and 

 often the entire plant is spread over the surface of the wood. 

 In this case no shelf form is developed. The upper surface of 

 the shelf is marked by concentric furrows and ridges, and is 

 more or less velvety or hairy. When young the fruit bodies are 

 tawny in color, but in age they become a darker brown, especially 

 above, while the fruiting surface is a yellowish brown. 



