KEY TO APHYLLOPHORALES 11 



Hymenium spread over a smooth, rugose, 

 or ribbed surface, either resting upon an in- 

 termediate layer of hyphae running longitu- 

 dinally between it and the mycelium, or 

 seated directly upon the mycelium 



THELEPHORACEAE. 



7. Hymenium covering the whole of the in-") 



terior of cup-shaped, urceolate, or cylindrical j- CYPHELLACEAE. 

 receptacles, smooth, or veined J 



POLYPORACEAE. 



Eeceptacle stipitate, or sessile, fleshy, cheesy,! 

 or coriaceous. Tubes homogeneous, or hetero- 1 

 geneous, dissepiments entire, or toothed. Spores | 

 white, or coloured J 



Eeceptacle stipitate, fleshy. Tubes becoming"] 

 torn into teeth, or gill-like plates 

 mosing at the base. Spores white 



Sistotrema. 



Receptacle sessile, hard, woody, or corky. Pileus\ 

 often concentrically zoned, covered with a hard [ 

 crust, or villose. Tubes homogeneous, or hetero- V Fomes. 

 geneous, often stratose. Spores white, or 

 coloured 



Receptacle stipitate, or sessile, corky. Pileus") 

 covered with a rigid, laccate, shining crust. I ^ , 

 Tubes often stratose. Spores coloured, oval,] ' 

 truncate at the base 



Receptacle resupinate, membranaceous, soft,\ 

 coriaceous, or corky. Tubes often inserted! p . 

 directly on the mycelium, round, or angular, j 

 Spores white, or coloured 



POLYSTICTACEAE. 



Receptacle sessile, thin, coriaceous, or mem-1 

 branaceous. Tubes homogeneous, developing j- Polystictus. 

 from the centre outwards. Spores white 



Receptacle sessile, or resupinate, membrana-"! 

 ceous, or coriaceous. Tubes alveolar, becoming j- Irpex. 

 torn, or toothed. Spores white 



