HYMENOMYCETES 367 



and of irregular shape and size, being formed by the 

 anastomosing of slightly raised ribs or veins. In Hexa- 

 gonia, a beautiful tropical genus, the pits or tubes forming 



T ' - i 



M$t&& 



FIG. 1 10. Polyporus hispid us, parasitic on various trees, i, two 

 sporophores seen from the front; 2, section showing fleshy pileus.a, 

 and long tubes, b ; 3, two basidia with spores. Much reduced. 



the hymenium are regular polygons, not always hexagons, 

 as implied by the generic name, and in some species they 

 are of large size, presenting the appearance of honeycomb, 

 hence the name of one species, Hexagonia apiaria. It 



