200 POLYPOREI. 



Polyporus. Commonly longitudinally effused, flaxy in close places, soft to the touch, 

 properly velvety, but becoming so even as to appear smooth. 



On trunks. Rare. 



Fries has no doubt that Sowerby's Boletus impuber is the same plant, and 

 therefore it must be included as British. Name gilvus, pale yellowish. 

 Schwein. Fr. Hym. Eur. p. 548. Sow. t. 195. 



** Substance white. 



43. P. fumosus Fr. Pileus 5-10 cent. (2-4 in.) broad, fuligin- 

 ous-pallid, fleshy-corky,yr;;z, zoneless, silky then becoming smooth, 

 adnate and dilated behind, internally fibrous, somewhat zoned. 

 Pores minute, curt, round, entire, whitish-smoke-colour, darker 

 when bruised. 



Csespitose, imbricated, moderately thick, attenuated towards the margin 

 which becomes black. Colour more or less smoky. 



On old stumps. Common. Oct.-Dec. 



Smell oppressive. M.J.B. Name fumosus, smoky. Fr. Hym. Eur. p. 

 549. Syst. Myc. i. /. 367. Berk. Out. p. 243. C. Hbk. n. 763. S. Mycol. 

 Scot. n. 720. Kl. Bor. t. 392. Rostk. t. 42. Pers. Tratten. t. 3. f. 5. 



44. P. adustus Fr. Pileus cinereous-pallid, fleshy-pliant, thin, 

 villous, effuso-reflexed behind, the margin which is tense and 

 straight becoming black. Pores minute, curt, round, obtuse, 

 whitish-pruinose soon cinereous-fuscous, the marginal ones ob- 

 solete. 



Like P. fumosus, but thinner, darker ; pileus spuriously zoned, slightly 

 wrinkled. Pores at length blackish. 



On old stumps. Frequent. Sept.-Jan. 



Pores always leaving a whitish margin on the under side. Name aduro, 

 to burn. Appearing as if scorched. Fr. Hym. Eur. p. 549. Berk. Out. p. 

 243. C. Hbk. n. 764. S. Mycol. Scot. n. 721. Fl. Dan. t. 1850. /. i. Kl. 

 Bor. t. 472. Rostk. t. $>. Willd. Bull. t. SOL/. 2. Batschf. 226. 



45. P. crispus Fr. Pileus cinereous-blackish, fleshy-pliant 

 then coriaceous, tough, rugose, effuso-reflexed behind, margin 

 thin, crisped, at length black. Pores rather large, unequal, at 

 length labyrinthiform, silvery-cinereous. 



Small, pileus when young fuliginous-black, floccoso-rugose, zoneless, white 

 at the margin, when full grown thinner, flexile, becoming pale, grey, becoming 

 smooth with a fuscous marginal zone (occasionally with many zones). 



On old stumps. Uncommon. Dec. 



Name crispa, a curl. From the crisped margin. Fr. Hym. Eur. p. 550. 

 Berk. Out. p. 243. C. Hbk. n. 765. 5. Mycol. Sect. n. 722. Pers. Obs. 

 Myc. ii. p. 8. 



