texture and context color, the plant is very close to Fomes robustus 

 of Europe (cfr. page 242), which never in Europe nor in other countries, 

 as far as I have noted, has this peculiar annular, sulcate surface. 

 The spores are much smaller than those of Fomes robustus, and^the 

 plant has no setae. 





Fig. 606. 



Fomes Yasudai. 



FOMES ODORATUS. Pileus ungulate, thick, hard. Surface 

 dull, minutely villose, uneven by the overlapping growths. Context 

 hazel brown. Pores small to medium, with thick walls, with the 

 hymenium lining the pores lighter than the context. Setae none. 

 Spores 4 x 8-10, cylindrical, hyaline. Odor when fresh strong, fra- 

 grant. 



This is not a rare plant in Europe on spruce, but it does not 

 occur in the United States. Our records are all in error. It is quite 

 close to Fomes pini in shape, size and texture, in its context color, 

 the contrast between the color of the pore lining and the context, and 

 in a less degree in its odor, for Fomes pini is said to have a "weak 

 odor" when fresh. The pores are smaller, the surface is different, 

 but the most marked differences are the absence of setae on the hy- 

 menium, and the spores. When fresh the growing pores are bright 



273 



