This was a rare plant that I collected in Samoa in but one locality. When 

 fresh it was pure white and a marked species, being so different from ordinary 

 polyporoids. At that time I was not acquainted with any species of this group 

 and was entirely at a loss to know where to place the plant. It is the only 

 white Hexagona known in this section. 



Fig. 329 



Hexagona mirabilis. Photographed in Samoa. 



SECTION 8, RESUPINATUS. 



I believe there are no truly resupinate Hexagonas. The only one that has 

 any claim is heteropora, and that is probably a resupinate form of something 

 else. Some resupinate plants that have been named as Hexagonas, such as car- 

 bonaria and Bartlettii, are evidently so closely related to the ferruginous Porias 

 that we shall so place them. 



Fig. 330. 

 Hexagona heteropora. Types at Paris. 



