244 FUNGUS-FLOKA. 



from Polyporus cuticularis, its nearest ally, by the thicker 

 flesh, larger pores, and larger obliquely apiculate spores, 

 also by the presence of a brown colouring-matter soluble in 

 alkaline solutions, which is not the case with Polyporus 

 cuticularis. 



Pileus a foot or more across, 4 in. thick, dimidiate, 

 with occasionally an obsolete knob-like stem, generally very 

 hispid, but sometimes almost smooth and cracked ; substance 

 fleshy but fibrous, marked with concentric lines which seem 

 to indicate different intervals in which vegetation has been 

 more or less dormant, brown, blackish, yellowish or reddish- 

 brown; below pale yellow, or rich sienna-brown, with the 

 margin paler. Spomles pure yellow, often hanging upon 

 spider's threads in elegant festoons beneath the hymenium. 

 Close to the bark of the tree the pubescence often resembles 

 Ozonium auricomum. (Berk.) 



Substance spongy, moist, coloured. Pileus 4-6 in., 

 yellowish or brown ; pores subrotund, equal, minute, forming 

 long tubes. (Fries.) 



Pileus dimidiate, horizontal, very thick, 518 in. across, 

 roundish, often irregularly divided into two or three large 

 lobes, convex, very villose, even shaggy, ferruginous at first, 

 and somewhat orange at the margin, at length black in age. 

 Flesh yellow-ferruginous, zoned, difficult to cut, but tearing 

 easily in the direction of the fibres. Pores long, yellowish, 

 roundish, pale and fringed at their orifices, sporules bright 

 yellow. (Grev.) 



Polyporus cuticularis. Fr. 



More or less semicircular, horizontal, base of attachment 

 rather narrowed, hairy or rather velvety-tomentose, often 

 minutely uneven and with a tendency to form small 

 radiating wrinkles, becoming plane, ferruginous-brown, then 

 darker; flesh |-^ in. thick, spongy, formed of lax parallel 

 fibres, yellow-brown; margin fibroso-fimbriate, incurved; 

 pores longer than thickness of flesh, pale then ferruginous, 

 minute ; spores broadly elliptical, not apiculate, yellow- 

 brown, 7 X 4-5 fj,. 



Polyporus cuticularis, Fries, Syst. Myc. i. p. 363 (excl. syn. 

 P. alneus) ; Stev., Brit. Fung., p. 202. 



On trunks. Pileuts 3-5 in. across, thin, becoming 



