iQig] 



MCDOUGALL—STROPHARIA 



261 



Such "stalls" are shown in figs. 8 and 9, and prove that the lamellae 

 are attached to the stem at this stage of development. 



Fig. 7 



Fig. 8 



Figs. 7, 8. — Stropharia epimyces: fig. 7, late stage in development of lamellae; 

 fig. 8, similar stage cut to show "stalls," indicating that gills are attached to stem. 



Fig. 9 



Fig. 10 



Figs. 9, 10. — Stropharia epimyces: fig. 9, portion of expanding carpophore show- 

 ing "stalls," indicating that gills are attached to stem; fig. 10, portion of expanding 

 carpophore showing the rather slight inner veil. 



The inner veil which develops from the ground tissue below the 

 hymenophore primordium remains intact until the lamellae are 



