statement in the books that it is "pulverulent with cinnamon spores" 

 is an error, for the spores are hyaline. They measure about 3^ x 5. 

 Everyone seems to have known Stereum frustulosum, excepting one 

 German writer, Hartig, who gave an excellent account of the peculiar 

 way in which the fungus affects the wood, but who called it Thelephora 

 perdix. No wonder the English author who translated the book 



Fig. 1041. 



states "it is not known as British." It is known as British very com- 

 monly, but not as Thelephora perdix. And this has not been corrected 

 even in as late a book as Saccardo, Vol. 20, 1911. Stereum frustulosum 

 has peculiar cystidia. The} 7 have little spiny processes, as shown on 

 our figure 565 of Letter 51 of an Australian species. I do not know, 

 but presume they have been noted before in connection with this 

 species. 



We have from W. Small, Africa, a form of Stereum frustulosum 

 (Fig. 1040), which forms a continuous layer, with a few cracks, but 

 not broken into little frus- 

 tules, as the plant always is 

 with us. With the same 

 peculiar microscopic fea- 

 tures, and the same peculiar 

 method of attacking the 

 wood (Fig. 1042), there can 

 be no question of the 

 identity of the fungus. Fig. 1042. 



697 



