244 FUNGUS-FLORA. 



from Fohiporus cuticularis, its nearest ally, l>y the thicker 

 flesh, larger pores, and larger obliquely apiculate spores, 

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

 alkiiline solutions, which is not the case with Pohjporus 

 cuticularis. 



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

 with occasionally an obsolete knob-like stem, generally very 

 hispid, bur sometimes almost smooth and cracked; substance 

 flesln' but fibrous, marked with concentiic lines AA-hich seem 

 to indicate diiferent intervals in which vegetation has been 

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

 brown ; Ijelow pale yellow, or rich sienna-browTi, with the 

 margin paler. Sporules 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 auricoimim. (Berk.) 



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

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

 long tubes. (Fries.) 



Pileus dimidiate, horizontal, very thick, 5-18 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 

 easil}'- 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, lieconiing plane, ferrugmous-brown, then 

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

 fibres, yellow-brdwn ; )iiargiii fibrdSD-fiiiibriate, incurved; 

 pores longer than thickness of liesh, i>ale then ferruginous, 

 minute ; spores broadly elliptical, not apiculate, yellow- 

 brown, 7 X 4-5 fj.. 



Ftili/juirus cuticularis, Fries, Syst. IMyc i. p. 3C3 (excl. syn. 

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



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



