t 

 A 



4 



mjf / 



*"" ' i "* k > *^^ /ZLs 





Fig. 45. Polyporus sulphureus. i, an entire fungus about one- 

 quarter nat. size ; 2, section through the same, showing the thick, 

 fleshy pileus at a, and the tubes, which have the cavity lined with 

 the hymenium, or spore-bearing surface, at b ; 3, a basidium bearing 

 four spores, x 300. 



