POLYl'ORFJ. 281 



Genus 24. POLYPORUS (p. 237.) 



I. Mesopus. — Pileus entire or excentric ; stem distinct, vertical, 

 simple, same colour at base, not definitely blackish. 



A. Carnosi. — P ileus fleshy, Jr agile or pliant, not coriaceous, 

 zoneless ; lohite spored ; growing on the grouiul ; autumnal. 



* Pileus unpolished, scaly or floccose. 



1. P. leucomelas, Fr.; pileus 2-3 in., fuliginous, fleshy, 

 somewhat fragile, irregular, slightly silky squamulose ; flesh 

 white, reddish when broken ; stem stout, equal or unequal, 

 somewhat tomentose, sometimes tuberous and becoming 

 black internally, same colour as pileus ; pores rather large, 

 unequal, cinereous whitish. 



In fir wood. Rothiemurchus. 



*'* Pileus ptolished, very smooth. 

 No British species recorded. 



B. Lbnti. — Pileus jlesJiy-pliant tlien coriaceous, zoneless ; white- 

 spored ; growing on trunks ; persistent. 



* Pileus unpolished, scaly or villous. 



2. P. lentus, Berk. (p. 237) ; li in. 



3. P. brumalis, Berk. (p. 237) ; 1-4 in. 



** Pileus even, smooth. 



4. P. fuscidulus, Fr. (p. 237) ; 1-2 in. 



5. P. leptocephalus, Fr. (p. 237) ; 1 in. 



c. Spongiosi. — Pileus at first spongy-soft, absorbing water, tomen- 

 tose, then corky or coriaceous; stem curt, irregular; pores 

 irregidar, pruinose, changing colour ; spores lohite ; generally 

 terrestrial ; mostly rare. 



6. P. Schweinitzii, Fr. (p. 238) ; 8 in. Epping Forest. 



7. P. rufescens, Fr. (p. 238) ; 2-4 in. Epping Forest. 



