POLYPOEUS. 251 



behind, Pores short, equal, obtuse, bright yellow, covered 

 with white powder when young. (Fries.) 



Polyporus epileucus. Fr. 



Pileus horizontal, pulvinate, 3-5 in. broad, 1-2^ in. thick, 

 soft and of a cheesy texture, then firm, whitish, rugged with 

 villose projections, flesh whitish ; tubes 2-3 lines long, pores 

 minute, round, pale ochraceous-tan colour, ^ mm diameter. 



Polyporus epileucus, Fr., Epicr., p. 452 ; Stev., Brit. Fung., 

 p. 196. 



On 'trunks and stumps. 



Simple, large, semiorbicular, concave below, flesh not 

 fibrous, scarcely zoned, pores at first scarcely distinguishable, 

 tubes minute, up to 18 mm. long. (Fries.) 



Polyporus alutaceus. Fr. 



Pileus 1-2 in. across, | in. thick, horizontal, reniform, 

 fleshy, becoming tough, pileus minutely velvety, pale dingy 

 ochraceous, flesh similar in colour, soft, fibrous, vaguely 

 zoned, margin acute ; tubes 3-4 mm. long, pores roundish, 

 minute, about mm. across ; spores subglobose, with a 

 slight ochraceous tinge, 4 /x, diameter. 



Polyporus alutaceus, Fries, Syst. Myc. i. p. 36. ; Stev., 

 Brit. Fung., p. 197. 



On beech and pine trunks, stumps, &c. Substance obso- 

 letely zoned, soft, fragile. Pilei often connate, triquetrous, 

 reniform, obtuse, 1 in. broad and thick. Pores quite entire, 

 forming long tubes. 



Somewhat imbricated, sometimes convex, at others 

 flattened, occasionally hairy and rugose, plane beneath. 

 (Fries.) 



Tubes about in. long. (Stev.) 



Polyporus chioneus. Fr. 



Pileus 1-2 in. across, thick and fleshy, soft, becoming even, 

 smooth, zoneless, often extended behind, also imbricated, 

 every part white ; tubes short, pores minute, round, equal, 

 the dissepiments quite entire. 



Polyporus chioneus, Fries, Syst. Myc. i. p. 359; Stev., 

 Brit. Fung., p. 197. 



On trunks and stumps of pine, birch, &c. Soft when 

 growing, becoming rigid when dry, hyaline-white when 



