There are but two cases where plants have been classed as Hexagona 

 which I have found to have colored spores, viz. : Hexagona decipiens, 

 of Australia, and Hexagona gracilis, of Brazil. I shall exclude them 

 both, however, from Hexagona and include them in the section of 

 Polyporus, where they belong, not only on their spore color, but their 

 general natures, which are closer to other Polyporus than to Hexagona. 



Fig. 276 X 6 



Fig. 277. 



Surface markings. The next character that we use in grouping 

 the species is the nature of the surface. 



Setosus. There is a very marked section of Hexagona with dense, coarse, 

 rigid, black hairs or setae on the surface. This is the same character that is 

 so familiar in the common Trametes hydnoides of the tropics. In fact, there 

 is a series of species beginning with Trametes hydnoides with minute pores 

 and ending with Hexagona apiaria with the large pores. This series has the 

 same form, context, color, peculiar surface hairs, and differs chiefly in the size 

 of the pores. It is a very natural group and might well be discovered to be a 

 new genus. The hairs (Fig. 276 X6) are peculiar, being more or less wedge- 



