Polyporaceee 



STROBILOMYCES. Page 47 5. 

 Tubes like Boletus, but pileus with large scales. Stem central. 



FlSTULiNA. Page 477. 

 Fleshy, lateral, tubes crowded but distinct. 



POLYPORUS. Page 479. 



Stratum of tubes distinct from hymenophore, but not separable, not 

 stratose; fleshy and tough, stipitate or sessile. 



FOMES. 



Tubes as in Polyporus, often stratose; woody, sessile; dimidiate. 

 (No edible species reported.) 



POLYSTICTUS. 



Tubes as in Polyporus, not stratose, generally developing from the 

 center to the margin, at first shallow and punctiform, coriaceous or 

 membranaceous. (No edible species reported.) 



PORIA. 



Tubes as in Polyporus, not stratose; entirely resupinate. (No edible 

 species reported. ) 



MUCRONOPORUS. 



Tubes studded with reddish-brown spines, intermingled with the ba- 

 sidia, otherwise as in Polystictus (and also as in Polyporus and 

 Fomes). Atkinson. (No edible species reported.) 



TRAMETES. 



Tubes immersed in flesh of pileus, of various depths, hence not form- 

 ing a heterogeneous stratum, subcylindrical, not stratose; corky; sessile. 



D^DALEA. 



Tubes as in Trametes, but sinuous and labyrinthiform ; corky; not 

 stratose; sessile. (No edible species reported. ) 



397 



