204 POLYPOREI. 



Polyporus. but the flesh is very thin, and from it both the cuticle and the very long pores 

 can at length be separated. Plane beneath, at first whitish, margin very 

 smooth, shining, barren, narrow. It has been confounded with P. applana- 

 tus, but differs by many marks. 



On lime-trees. Rare. 



, of vigorous growth. Fr. Hym. Eur. p. 556. Icon. t. 183. 

 f. i. Berk. Out. p. 245. C. Hbk. n. 774. 



** Substance and pores somewhat ferruginous. 



57. P. applanatus Fr. Pileus cinnamon becoming hoary, flat- 

 tened, tubercular, obsoletely zoned, pulverulent or smooth, cuticle 

 crustaceans, rigid, at length fragile, internally very soft, laxly 

 floccose, margin swollen, white then cinnamon. Pores very small, 

 somewhat ferruginous, orifice whitish, becoming fuscous when 

 bruised. 



Odour acid. When fresh much softer than P. fomentarius, &c., but not 

 fleshy or juicy. The pores are softer and shorter. 



On trunks, especially ash. Uncommon. Aug.-Oct. 



Attaining a large size. Name piano, to level. Flattened. Fr. Hym. 

 Eur. p. 557. Berk. Out. p. 245. C. Hbk. n. 775. 5. Mycol. Scot. n. 731. 

 Kl. Bar. t. sg^.Pers. Rostk. 27. t. 9. Batschf. 130. Bull. t. 454.7. C'i 



58. P. fomentarius Fr. Pileus fuliginous becoming hoary, 

 hoof-shaped-pulvinate, thick, smooth, remotely and concentri- 

 cally sulcate, smooth, opaqtie, internally soft, floccose, ferruginous- 

 tawny, cuticle thick, very hard, persistent, margin at first glau- 

 cous-pruinose then ferruginous. Pores very long, minute, dis- 

 tinctly stratose, at first glaucous-pruinose then ferruginous. 



Plane beneath, attenuated towards the margin from the very thick base, 

 hence triangular indeed, but semi-orbicular at the circumference and on all 

 sides sloping downwards. There are two monstrous forms ; one stalked, 

 cylindrical (Batt. t. 37. E. Nees Nov. Act. Nat. Cur. x. with Jig.); another 

 effused, resupinate. It used to be gathered and sold as making excellent 

 tinder. 



On trunks. Common. Aug.-Nov. 



Pileus 10-12.5 cent. (4-5 in.) broad. Sometimes when old, especially when 

 growing on birch, nearly white, occasionally tinged with bright yellow. Mass 

 of pores generally concave. M.J.B. Namefomentem, luel, tinder. />. 

 Hym. Eur. p. 558. Sv. dtl. Sv. t. 62. Berk. Out. p. 245. C. Hbk. n. 776. 

 S. Mycol. Scot. n. 732. Rostk. 4, t. 52. Linn. Lenz f. 48. Sow. t. 133 

 (first year). 



59. P. nigricans Fr. Pileus black, pulvinate, very thick, densely 

 and concentrically sulcate, smooth, shining, the very hard crus- 

 taceo-torn crust persistent, internally very hard, ferruginous, mar- 



