246 OUTLINES OF BRITISH FUNGOLOGY. 



42. P. igniarius, Fr. ; pilcus even, clothed with a thiu 

 flocculcnt coat, which soon hecomes white, at length ungu- 

 late, ferruginous, changing to brownish-black, opaque; skin 

 close ; surface uneven, very hard, as well as the zoned ferru- 

 ginous flesh ; margin rounded ; pores very minute, convex, 

 stratose, cinnamon, at first whitish. — Sow. t. 132. 



On willows, poplars, plums, etc. Extremely common. My- 

 celium and spores white, by which latter circumstance, as well 

 as by other characters, it is clearly distinguished from 1\ fo- 

 mentarius. Often resupinate. 



43. P. Ribis, Fi\ ; pileus corky, coriaceous, rather soft, 

 flattened, velvety, nearly even, ferruginous, then umber, tawny 

 Mithiu, as well as the sharp margin, and short, small, naked 

 pores. 



At the base of currant- and gooseberry-trees. Very com- 

 mon, lasting several years. 



44. P. conchatus, Fr. ; pileus corky, hard, thin, effused, 

 subconchiform, rcflexed, concentrically sulcate, toraentose, 

 bright brown ; margin acute; pores short, small, cinnamon. 



On trunks of various trees. Not uncommon. 



4ij. P. salicinus, Fr.; pileus woody, very hard, undulated, 

 smooth, in great part resupinate ; margin short, obtuse, pa- 

 tent, cinnamon, then brown ; pores very small, round, ferrugi- 

 nous, cinnamon. 



On willows. Common. Very difficult to distinguish from 

 the last, which also grows on willows. Both are frequently 

 resupinate. Crust black. 



46. P. tQmarius, Fr. ; pileus corky, hard, undulated and 

 tubcrculate, crustaceous or pileate, smooth, at first white with- 

 out and within ; pores dccurrent, minute, round, stratose, yel- 

 lowish salmon-coloured. (Plate 10, fig. 5 : plant of the second 

 season.) — Huss. i. t. 64. 



