POLYPOREI. 245 



On old stumps. Not common. A small species^ resembling 

 some states of P. fumosus. 



38. P. vegetus, Fr. ; pilcus broad, dilated, smooth, opaque- 

 brown ; annual zone broad, coueentrieally sulcate ; substance 

 floccosc, loose, very thin ; cuticle of the second season thick, 

 separable; pores minute, seceding, umber, the stratum of 

 each year being separated by a floccosc mass. 



On lime-trees. Scotland, Klotzsch. 



39. P. applanatus, Fr. ; pilcus flattened, tuberculate, obso- 

 letely zoned, pulverulent or smooth, cinnamon, become whitish, 

 clothed with a rigid, crustaceous, and at length brittle skin, 

 very soft within, loosely floccosc ; margin swollen, white, then 

 cinnamon; pores very small, subferruginous ; orifice dirty- 

 Avhite, brownish when bruised. 



On trunks of trees. Scotland, Klotzsch. Bristol, Oxford, 

 etc. A large plant, with abundant ferruginous pores, and 

 very soft, often pale, silky flesh. 



40. P. fomentarius, Fr. ; pilcus ungulate, dilated, thick, 

 remotely zoned concentrically, smooth, opaque, dingy, then 

 whitish, soft and floccosc within, of a tawny-ferruginous ; 

 cuticle thick, very hard, persistent; margin and very long 

 minute pores distinctly stratose, at first pruinose, then ferru- 

 ginous. — Sow. t. 133. 



On trunks of trees. Common. Spores dark, 



41. P. nigricans, Fr.; pilcus pulvinate, very thick, closely 

 and concentrically sulcate, smooth, shining, black ; crust very 

 hard, laccate, persistent; substance ferruginous, extremely 

 hard ; margin very obtuse, ferruginous, as well as the very 

 small, plane, eonfluenti-stratose, naked pores. 



On birch-trees. Scotland, Klotzsch. Not found, I ])clicvc, 

 by any one else. A neater and more shining plant than the 

 following. 



