376 BRITISH FUNGI 



1. Stem springing from edge of pileus. 



P. Incidiis. — Pileus horizontal, irregularly circular or kidney- 

 shaped, corky, then hard, light in weight, wrinkled, deep 

 reddish chestnut, polished, shining ; tubes l-l in. long, pores 

 minute, white, then buff ; stem springing from the edge of 

 the cap, rugulose, polished and coloured hke the pileus, sometimes 

 almost absent. 



The highly polished appearance — as if varnished — is due to the 

 presence of a thick, stick^^ substance which exudes from the pileus 

 and stem, and soon dries hard. Common in most parts of the 

 world. 



On trunks and stumps. 



F. laccatus. — Resembling P. lucidus in most points ; differing 

 in being usually stemless and attached by a broad base, and in the 

 pores and thick margin being yellow. 



2. Sessile, horizontal and attached by a broad base, or e-ffused, i.e. 

 spreading over the matrix. 



* Cap ivhitish. 



F. tdmarius. — Pileus whitish, effused, sometimes with a blunt, 

 free edge, corky, then hard, smooth, usually not even ; flesh white ; 

 tubes stratified, whitish, pores minute, yellowish or tawTiy. 



Effused, sometimes wdth a projecting free portion, 4-10 in. across, 

 tubes -|-| in. long when old and stratified. 



On old elm trunks. 



F. populinus. — White, corkj^ then woody, zoneless, downy, edge 

 blunt ; flesh white ; pores minute, rounded. 



Usually imbricated, or with several overlapping free portions or 

 pilei. 



On poplar. 



F. cytisinus. — Imbricated to a length of a foot, and 4-6 in. broad, 

 pileus coarsely warted, edge shghtly turned in, whitish ; tubes up 

 to I in. long behind, shorter towards the edge, pores minute, 

 roundish, whitish. 



On laburnum. 



F. connatus. — Effuso-re flexed, densely imbricated, the free 

 portions growing into each other from the resupinate portion, 

 velvety, greyish white ; flesh white, zoned, tubes stratified, pores 

 minute, roundish, white. 



Often running down trunks and stumps for 1-2 ft. the free 

 portions overlapping each other and springing from an effused or 

 adnate portion. The pores vary in colour, depending from what 

 position they are seen, in some positions glistening with a satiny 

 sheen. 



Poria obducens, once considered as a true Poria, has been proved 

 to be only a resupinate form of the present species. 



On old trunks and stumps. 



