PORE FUNGI 



95 



Fomes igniarius Punkwood Fomes 



("a]) <S-1() cm. wide, hlackisli or black, more rarcl\- dark brown, more or less 

 hairy and roughened, rust brown within; pores tin\, brown; spores clear, glo- 

 boid, 6-7/Lt. 'The name relers lo its use as punkwood. 



Frequent on tree trunks; perennial. 



I'OlAl'OUl'S 



Cap thickish, tough-llesliy to leathery, more rarely woody, not ijerennial, central- 

 stemmed to e.xcentric or shelf like, (doscly related to I'' o m e s and 1' o 1 y s t i c t u s. 

 from which the woody and leathery species respectively are se]iarated with dilliculty. 

 One of the commonest of fungus genera, found everywhere on stumps and logs. 'I'he 

 Jleslu' species are all more or less t'dible. 'i'he name refers to the porous surface. 



Figure 59. Fomk.s pixuola 



Key to the Species 



1. Cap with central, e.xcentric or lati'ral stem 



a. Caps more or less single and stems distinct 



(1) Caji small. 2-1(1 cm., leathery 



(a) Cap smooth or scaly; stem hair\- 



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



ly scaly 



(2) Caj) large, l(>-.^(» cm., tough-tleshy 



(a) Cap scaly, whitish to yellowish 



(b) Cap smooth, brownish to dark brown 



b. Caps denselv clustered and stems united 



(1) Caps regular, depressed; stems distinct except 



toward base P. timbcUatus 



P. hnnualis 



P. arciilarius 



P. sGuamosus 

 P. picipcs 



