WESTERN POLYPORES 



Including the pileate species occurring in California, Oregon, 

 British Columbia, and Alaska. 



POLYPORACEAE 



Hymenophore annual or perennial; context fleshy- tough, 

 corky, or woody; hymenium poroid or lamelloid, fleshy to woody, 

 never gelatinous. 



Hymenium porose. 



Hymenophore annual. 

 Volva wanting. 

 Volva present. 

 Hymenophore perennial. 1 

 Hymenium furrowed. 2 



Tribe i. 

 Tribe 2. 

 Tribe 3. 

 Tribe 4. 



POLYPOREAE. 

 VOLVATAE. 

 FOMITEAE. 

 DAEDALEAE. 



Tribe I. POLYPOREAE. Hymenophore variable in size and shape, fleshy- tough 

 to corky, annual, sometimes reviving; surface encrusted or anoderm, glabrous 

 or hairy, zonate or azonate; context fibrous, rarely punky, variously colored; 

 tubes cylindric, sometimes splitting into teeth, usually thin-walled; spores 

 rounded or oblong, brown or hyaline; cystidia frequently present; surface of 

 pileus never conidia-bearing; stipe often present, variously attached. 



3. SPONGIPORUS. 



5. SPONGIPELLIS. 



6. 



4- 



BjERKANDERA. 



TYROMYCES. 



Context white. 



Hymenophore sessile. 



Pileus very soft, spongy, and elastic throughout. 

 Pileus more or less firm, flexible or rigid. 



Context duplex, spongy above, firm below; 



surface sodden and bibulous. 

 Context not duplex as above. 



Pileus fleshy-tough to woody and rigid. 

 Hymenium more or less smoke-colored 



at maturity. 



Hymenium white or pallid. 

 Pileus thin, leathery, and more or less flexi- 

 ble; surface usually zonate. 

 Hymenophore normally pileate; tubes 



small and nearly always regular. 

 Hymenophore semiresupinate; tubes 

 large and irregular. 



1 Exceptions occur in species of Ganoderma and Fames. 

 related to the Daedaleae. 



1 Cerrena shows an irpiciform hymenium at maturity, much resembling species 

 of Coriolus. Daedalea and Gloeophyllum sometimes show poroid forms that are 

 very confusing. 



I 



1. CORIOLUS. 



2. CORIOLELLUS. 



Porodaedalea is closely 



