POKIA. 199 



On rotten wood, also on dead leaves. Sometimes broadly 

 effused, known by the fringed, fibrillose margin ; the partitions 

 of the pores are very thin and usually toothed or torn. 

 Sometimes tinged with yellow. 



At fir.st forming a mere fringed byssoid membrane, which 

 gradually acquires moderate, rigid, subrotund, and angular 

 pores, the partitions of which are so thin that they very 

 generally become lacerated. (Berk.) 



Poria vulgaris. Fr. 



Broadly eft'used, white, flesh obsolete, consisting almost 

 entirely of closely packed, minute, round, subequal tubes 

 about i— 1 line long ; margin soon even and smooth. 



Poria vulgaris. Fries, Syst. Myc. i., p. 381. 



Polyporus vulgaris, Stev., Brit. Fung., p. 218. 



On dead wood, branches, &c. Often effused for 8-12 in., 

 inseparable except in fragments. Pores vertical or oblique, 

 sometimes yellowish, i-i mm. across. 



Poria medulla-panis. Fr. (fig. 11-12, p. 184.) 



White, effused, circumference naked, determinate, more or 

 less marginate ; flesh obsolete, consisting almost entirely of 

 rather long, entire, medium-sized pores. 



Polijporus medulla-panis. Fries, Syst. Myc. i. p. 380 ; Stev., 

 Fung., p. 216. 



On rotten wood, branches. Sec. Forming patches 2-4 in. 

 across, about 2 lines thick. Becoming rigid and separable 

 when dry. Sometimes tinged yellow when old. Said to 

 grow on the grotmd. 



Effused, white, becoming yellowish in age, roundish, 

 tolerably defined, dry, thickish, following in some degree 

 the inequalities of the wood. Pores elongated, roundish, 

 straight or oblique, according to situation. Flesh almost 

 none. (Grev.) 



Pores about :[-^- mm. across. 



Poria vitrea. Pers. 



Broadly and unequally effused, separable, whitish, sub- 

 hyaline, indeterminate, margin thin, villous ; pores minute, 

 entire, rather long, roundish, straight or oblique according 

 to situation. 



