250 FUNGUS-FLORA. 



Polyporus adustus, Fries, Syst. Myc. i. p. 363; Berk., 

 Outlines Fungol., p. 243. 



On trunks, stumps, &c. Very variable, sometimes entirely 

 resupinate, at others with a broad, free, reflexed margin, and 

 often much imbricated. Whole substance not more than 

 23 lines thick, flexible when moist. Known by the ashy- 

 grey hymenium, pores minute, obsolete towards the margin, 

 averaging 3-4 in the space of 1 mm. 



Pores very small and grey, even in younger specimens 

 always leaving a whitish margin on the under side which 

 will readily distinguish it. (Sow.) 



Sowerby's original specimens are now of a dull reddish- 

 brown, with the tubes darker and not extending to the 

 margin ; their substance hard and corky ; they have scarcely 

 any of the scorched appearance which is very remarkable in 

 the specimens from Nottinghamshire. (Berk.) 



Imbricated, size variable, subrugose, obsoletely zoned, 

 covered with a delicate tomentum. Pores short, rotund, 

 obtuse, equal, at first with a silvery sheen, then dingy grey 

 or blackish. (Fries.) 



Polyporus amorphus. Fr. 



Effuso-reflexed or entirely resupinate, thin and flexible, 

 becoming incurved and rigid when dry, pileus white, 

 minutely velvety; pores small, irregular, golden yellow, 

 dissepiments very thin ; spores colourless, elliptic-piriform, 

 8-9 x 4 p,. 



Polyporus amorphus, Fries, Obs. 2, p. 258; Stev., Brit. 

 Fung., p. 201. 



On rotten pine wood, or running over pine leaves on the 

 ground. Sometimes very thin and entirely resupinate, 

 following the inequalities of the matrix ; pores about three 

 in space of 1 mm., but irregular and sometimes when grow- 

 ing on a vertical substratum becoming effuso-reflexed and 

 imbricated, and in such specimens the pores are often large, 

 irregular, and torn. 



Eesupinate, with the upper margin reflexed or dimidiate, 

 imbricated, somewhat zoned, white and silky; pores minute, 

 short, yellowish, or rich tawny, pruinose when young. 

 (Berk.) 



Pilei imbricated, soft, slightly zoned, becoming darker 



