American Wood-Preservers' Association 15 



Gloeoporus CONCHOIDE5 

 (Plate VII, Fig. 5) 



The fruiting-bodies of this fungus are shelving, loosely arranged 

 one above the other and usually run together where attached to the 

 surface of the wood. On ties they rarely extend out more than }4 to 

 % inch. The upper surface is light buff. The under surface is brownish- 

 drab and provided with minute pores which require a hand lens to 

 see. The species may easily be identified by the fact that the pore 

 layer in fresh specimens, or in old specimens which have been moistened, 

 stretches like a thin sheet of rubber when the fruiting-body is torn 

 apart. 



This fungus was noted several times, particularly on red oak, where 

 it may rot both heart and sapwood. It has a wide distribution over 

 the United States, principally on hardwoods. 



Trametes Sepium 

 (Plate VII, Fig. 1) 



Fresh plants of this species are small, white, tough and firm, and 

 project out from the wood less than half an inch. They are shelving 

 and often elongated. As they dry they become pale buff and rather 

 hard. The under surface bears large pores easily visible to the un- 

 aided eye. 



The fungus is widely distributed on hardwoods, but mainly on 

 white and red oaks and chestnut. It produces a brownish rot so severe 

 that the wood readily crumbles between the fingers. 



Daedalea Confragosa 

 (Plate VII, Fig. 7) 



This fungus is a rigid shelving species which may be 5 to 6 inches 

 across and projects out 2 to 3 inches. It is usually J4 to M inch thick 

 where attached to the surface of the wood. The upper surface is 

 brown, somewhat irregular, and rather rough to the touch. The lower 

 surface is nearly the same color and provided with radially elongate, 

 often sinuous, pores easily visible to the unaided eye. 



The fungus is widely distributed over the United States, growing 

 mainly on willow, and being largely limited to this species is rarely 

 found in tie yards. It occurs most commonly on dead trees or on 

 living trees which have been injured. It causes a uniform bleaching 

 of the wood and a severe rot. 



Fomes Roseus 



(Plate VIII, Fig. 4) 



This fungus is one of the larger fungi of the shelving type. The 



annual form is corky when fresh, but firm when dry. It is pinkish to 



rosy throughout, and for this reason easily distinguished. Old speci- 



