134 



MINNESOTA MUSHROOMS 



KEY TO THE GENERA 



1. Cup inverted conic. 10-16 mm. tall 



2. Cup cup-shaped, 5-8 mm. tall 



Cyathus 

 Crucibulum 



Page 



134 



135 



Figure 98. Mutixus caxixus 



CYATHUS 



Readily distinguished from Crucibulum by microscopic characters of the 

 wall and sporangiole, but to be told by the beginner chiefly through its form and 

 size. The name means cup-like. 



Key to the Species 



1. 

 1 



Margin of the cup grooved or striate 

 Margin of cup not striate 



C. slriatiis 

 C. verrucosus 



Figure 99. Cyathus vernicosus 



