Polyporus 



POLYPORACE^: 



347 



1575. P. quereinus Fr. (from its habitat, oak, quercus) a b c. 



P. pulvinate, very thick, soft to hard, ivory- or sulphur-whitish, 

 clouded and margined reddish. T. short, minute, whitish, 

 clouded as P. Flesh ivory-white, zoned, orange-red and pale 

 sulphur. 



Single to 3-imbricate. Taste intensely bitter. Old oaks, oak-logs, often in 

 company with 1517, which it somewhat resembles. May-Dec. Mass 6 in. 

 P. 3^ in. Often barren ; sometimes I it. in diam. 



LXIII. FOMES Karst. 



(From the use in kindling fire in past times ; 

 femes, touch-wood, tinder). 



Pileus hard and woody from the first, texture consisting of inter- 

 woven hyphae, covered with a hard, rigid, crustaceous cuticle, zone- 



Fig. 78. A, section of Fames fomentariits Karst. ; B, ditto F. annosus Cooke. 

 One-half natural size. 



less but often concentrically silicate, perennial, forming successive 

 strata. (Fig. 78.) 



