506 



BULLETIN 168. 



(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 atramentarius ; showing annulus as a border line 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 by 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 



