5o6 



Bulletin i68. 



(46) 



varies in color from a silvery grey in a few forms, to a dark ashen 

 grey, or smoky brown color in others. Sometimes the pileus is 

 entirely smooth, as I have seen it in some of the silvery grey 



94. — Coprinus atrainentarins ; showi^ig annulus as a border lifie between 

 scaly and smooth part of stem. {Natural size.) 



forms, where the delicate fibres coursing down in lines on the 

 outer surface cast a beautiful silvery sheen in the light. Other 

 forms present numerous small scales on the top or center of the 

 pileus which are formed b}^ the cleavage of the outer surface here 

 into large numbers of pointed tufts. In others, the delicate 

 tufts cover more or less the entire surface, giving the plant a 

 coarsely granular aspect. This is perhaps the more common 

 appearance, at least so far as my observation goes. But not 

 infrequently one finds forms which have the entire outer surface 



