POLYPOEEI. 



249 



Order II. POLYPOREI. 



Hymeninm lining tlie cavity of tubes or pores, whicli are 

 sometimes broken up into teeth or concentric plates. — Fr. Berk. 

 Outl p. 229. 



Hymenium inferior, lining the cavity of tubes or pores, whicli are at first 

 sinuoug. Pores sometimes broken np into wavy or labyrintbiform, concen- 

 tric (not radiating) laminae, or teeth ; when young, and the hymenium is 

 sinuous, pores are present in the margin. 



Hjrmenium lining tubes, regular — 

 Trama none. 



Tubes separating from the hymeno- 

 phore and from each other, terres- 

 trial . . . . , Boletus. 



Tubes adhering to the hymenophore 



and to each other, terrestrial. . STROBiLOifYCES. 

 Trama present. 



Trama dissimilar in substance (and 

 often in colour) from the hymeno- 

 phore, generally epiphytal . . . Polypoeus. 

 Trama the same in substance and co- 

 lour with the hymenophore, epi- 

 phytal Trametes. _ 



Hymenium lining tubes, irregidar— ^^ 



Tubes forming deep labyrinthiform depressions — 



plant woody D^dalea. 



Tubes incomplete, reduced to shallow sinuous 



folds ; plant waxy Meeulris. 



Hymenium at first papillose, papillas at length elon- 

 gating and forming tubes— 



Plant submembranaceous and resupinate . . . Porothelium^ 

 Plant fleshy Fistulina. 



Gen. IS, . BOLETUS, Fr. 



Hymenium quite distinct from 

 the smooth hymenophore; trama 

 none, the tubes easily separating 

 from the hymenophore, and from 

 each other ; fleshy, putrescent, ter- 

 restrial fungi, having central stems. 



(Fig. 62.) 



Fig. 62. 



A clearly defined genus, with many 

 handsome species, including some that 

 are poisonous, and many that are escu- 

 lent. 



M 5 



