PORE FUNGI 



95 



Fomes igniarius Punkwood Fomes 



Cap 8-10 cm. wide, blackish or black, more rarely dark brown, more or less 

 hairy ami roughened, rust-bro«-n within ; pores tiny, brown ; s p ores clear, glo- 

 boid, 6-7/1. The name refers to its use as punkwood. 



Frequent on tree trunks; perennial. 



I'or.YPOKU.s 



Cap thickish, tough-fleshy to leathery, more rarely wood)', not perennial, central- 

 stemmed to excentric or shelf-like. Closely related to F o m e s and Polystictus, 

 from which the woody and leathery species respectively are separated with diflicult\-. 

 <)ne of the commonest of fungus genera, found everywhere on stumps and logs. The 

 fleshy species are all more or less edible. The name refers to the porous surface. 



Figure 59. Fomes pixicol,\ 



Key to the Species 



1. Cap with central, excentric or lateral stem 



a. Caps more or less single and stems distinct 



(1) Cap small, 2-10 cm., leathery 



(a) Cap) smooth or scaly; stem hairy 



(b) Cap ciliate or hairv at the margin; stem slight- 



ly scaly 



(2) Cap large. 10-50 cm., t(-)ugh-fleshy 



(a) Cap scaly, whitish to yellowish 



(b) Cap smooth, brownish to dark brown 



b. Caps densely clustered and stems united 



(1) Caps regular, depressed; stems distinct e\cej)t 

 toward base 



P. 

 P. 



bruDialis 



arciilariiis 



sqiiamosus 

 fiicipcs 



P. iiinhcllatus 



