rough. Cystidia (Fig. 915) large, thick-walled cells, varying much 



as to shape, but usually stalked at the base. 



The permanent cells found in the gleba are unusual. I have 



been examining the gleba of Gastromycetes for many years, and I 



never before noted simi- 

 lar bodies in the ripe 

 gleba. Miss Wakefield, 

 to whom I sent a speci- 

 men, suggests that they 

 are cystidia, and I be- 

 lieve she is right. We 

 know that there are spe- 

 cies of Gastromycetes 



such as Secotium, that do have cystidia in the hymenium, and 



"new genera" are even based on 



them. But they disappear in deli- 

 quescence, and are not found in 



the ripe gleba. That these bodies 



in the ripe gleba of Diploderma 



insolitum are cystidia is probable, 



but it is strange that they do 



Fig 914 



not disappear like the basidia 

 and hypheal tissue, in deliques- 

 cence. As far as I know, there 

 is no other analogous case, except- 

 ing perhaps the curious cells of 

 Battarrea. Type from C. C. 



Brittlebank, Melbourne, Australia Fig. 915. 



(No. 3). 



DIPLODERMA CASTOREUM (Fig. 916). Peridium double, 

 about of equal thickness, smooth, fibrous, tough. (Dehiscence?) 



Fig 916. 



Diploderma castoreum. 



642 



