CLASSIFICATION 377 



** Pileus more or less rose-colour. 



F. roseiis. — Pileus 2-5 in. broad, l-i in. thick, corky, then hard, 

 triangular, even, banded, rose-colour which is more or less obscured 

 by a greyish black bloom, flesh rose-colour, pores minute, rose- 

 colour. 



Rose-colour without and within. 



On worked wood and barked logs. 



*** Pileus rusty, brownish, tawny, etc., always dark. 



F. fomentarius (PI. XXIX, fig. 2).— Hoof-shaped, 4-7 in. across^ 

 cap concentrically grooved, smooth, dingy brown, cuticle very hard ; 

 flesh rusty ; tubes |-2 in. long, stratified rusty, pores white, then 

 rusty. 



Hymenium flat, fungus roughly triangular in section. A de- 

 structive parasite on forest trees. 



F. ignarius. — Hoof-shaped, 3-6 in. broad, concentrically zoned, 

 rugose, rusty, then blackish, very hard ; flesh zoned, rusty ; tubes 

 1-2 in. long, stratose, pores very small, cinnamon, hymenium 

 convex. 



Differs from F. fomentarius in thinner substance, convex hy- 

 menium and harder flesh. 



A destructive parasite. 



F. nigricans. — Hoof-shaped, 4-6 in. across, 3-4 in. thick, hard, 

 with a black, varnished crust, edge rusty ; flesh hard, rusty ; tubes 

 2-3 in. long, rusty. 



Known by the blackish, shining pileus. 



On living and dead birch. 



F. salicinus. — The greater portion resupinate, woody, with a 

 narrow, wavy, free edge, buff, then greyish ; the minute pores 

 and flesh rusty. 



Spreading for a foot or more. 



On willow trunks, 



F. fraxineus.—'Pileus almost flat, semicircular, attached by a 

 broad, thick base, rugged, white, then reddish ; flesh pale ; tubes 

 short, pores minute, whitish, then reddish. 



Cap 4-9 in. across, soft when young, sometimes concentrically 

 zoned. Smell strong. 



On old ash and other trunks. 



F. pectinatus. — Pileus triangular, corky, concentrically zoned 

 with thin, plate-like ridges, downy-scaly, edge and pores reddish 

 yellow. 



On wood. 



F. vegetus. — Pileus 8-12 in. l)road, flattened, smooth, brown, 

 concentrically grooved ; tubes umber, pores minute, roundish, 

 whitish at first. Flesh thin. 



Hymenium flat, white at first, flesh very thin, points that 



