198 POLYPOREI. 



Polyporus. fragile, triangular, pubescent, zoneless externally and internally, 

 margin inflexed, acute. Pores thin, acute, toothed, at length 

 labyrinthiform, torn. 



Commonly small, thin, but sometimes larger, transversely elongated, very 

 much sloped downwards and gibbous behind, at length becoming smooth and 

 uneven. 



On dead laburnum and birch. Rare. Sept.-Nov. 



Name lac, milk. Milk-white. Fr. Hym. Eur. p. 546. Icon. t. 182. /. 

 i. S. Mycol. Scot. n. 714. Rostk. t. 23. 



35. P. fragilis Fr. Whitish, spotted with fuscous when touched. 

 Pileus fleshy, fibrous, fragile, piano-depressed and reniform, 

 rugose, convex beneath. Pores thin, elongato-flexuous, intricate. 



Very distinct, although no form is constant. It varies stretched out in the 

 form of a stem and pendulous. 



On dead pine. Uncommon. Sept.-Nov. 



fragilis, fragile. Fr. Hym. Eur. p. 546. Icon. t. 182. /. 2. Berk. 

 Out. p. 242. C. Hbk. n. 758. S. Mycol. Scot. n. 715. 



36. P. mollis Fr. Pileus flesh - colour, fleshy -fibrous, soft, 

 effuso - reflexed, somewhat triangular, rugose, margin acute. 

 Pores unequal, elongated, flexuous, soft, white, spotted with red 

 when touched. 



Not watery, but soft to the touch, seriate-elongated or resupinate. 

 On dead pine. Slough. 



Name mollis, soft. Fr. Hym. Eur. p. 547. Icon. t. 182. /. 3. B. 6 s Br. 

 n. 1365. Pers. Obs. i. p. 14. 



37. P. csesius Fr. White, now and then tinged bluish-grey. 

 Pileus 1-5 cent. (}4-z in.) broad, fleshy, soft, tough, unequal, 

 silky. Pores very small, unequal, elongato-flexuous and torn into 

 teeth. 



Small, variable in form, stipitate and resupinate. 

 On dead fir. Frequent. Sept.-Nov. 



Spores pale blue, oval, 3x14 mk. W.G.S. Namec&sius, bluish-grey. 

 Fr. Hym. Eur. p. 547. Syst. Myc. i. p. 360. Berk. Out. p. 242. C. Hbk. 

 n ' 759- S. Mycol. Scot. n. 716. Schrad. Sow. t. 226. 



38. P. trabeus Rostk. White. Pileus fleshy-fibrous, then firm, 

 effuso-reflexed, transversely elongated, zoneless, pallid. Pores 

 curt, minute, somewhat round or elongated, toothed, white. 



Commonly conjoined with P. destructor. Both vary effused and reflexed, 

 smooth and pubescent, but P. trabeus is more regular, of brighter colour, 

 hyaline within when moist, obsoletely zoned. 



