214 FUNGUS-FLORA. 



With the habit and general appearance of Puhjstidus versi- 

 color, hut quite distinct ; pores about ^ mm, across. 



Often imbricated and continuously efiused behind. Dis- 

 tinguished from P. velutinus by the coarsely strigose pileus 

 and the different spores. 



Both surfaces almost plane, reniform, often imbricated, 

 about 2 in. long, 1^ in. broad, zones coloured like the pileus. 

 Substance tough, soft. Pores of medium size, equal, be- 

 coming grey; sometimes yellow, but always internally 

 white. (Fries.) 



Polystictus velutinus. Fr. 



Horizontal, laterally attached, thin, corky-coriaceous then 

 rigid; pileus velvety, indistinctly zoned, white, becoming 

 yellowish, margin straight, acute ; jdane on both surfaces ; 

 pores short, subangular, white, disseiDiments thin ; spores 

 broadly elliptic-oblong, obliquely apiculate, 5 X 4 /a. 



Pohjporus velutinus, Fries, Syst. Myc. i. p. 368 ; Berk., 

 OutL "Fung., p. 248. 



On trunks, stumps, &c. Sometimes imbricated, 1-3 in. 

 across, about ^r in. thick. Moist when j'oung, then becoming 

 hard ; pileus not shining, as in Pdli/stidus versicolor, from 

 which it is also distinguished by the whitish colour. Pores 

 about three in 1 mm. 



More or less imbricated. Pileus 2-3 in. broad, velvety, 

 undulated, obscurely zoned, between corky and leathery, 

 margin thinner than in the following species ( = Polystictus 

 versicolor), shrinking and curling inwards when dried ; 

 colours various, whitish with a cottony margin, yellowish- 

 fuscous, or brownish-grey ; the latter is most common. 

 Pores whitish or yellowish, minute, round, very short, often 

 disappearing near the margin. (Grev.) 



I'ileus convex when young, then depressed, thin, white or 

 pale yellowish, about 2 in. across. Pores small, equal, dingy, 

 white or yellowish. (Fries.) 



Polystictus gossypinus. licv. 

 "White, i'ileus 1—1 in. acioss, coriaceous, effuso-reflexed, 

 flattened, thin, tomentose, zoueless ; flesh thin, white ; tubes 

 1-2 lines or more long, pores lal)yrinthiform, then angular, 

 rather large, greyish, dissepiments thin, more or less torn. 



