500 



BULLETIN 168. 



(40) 



The cylindrical or barrel-shaped pileus is characteristic of the shag- 

 gy-mane mush- 

 room. As the 

 pileus elongates 

 the stem does 

 also, but more 

 rapidly. This 

 tears apart the 

 connection of the 

 margin of the 

 pileus with the 

 base of the stem, 

 as is plainly 

 shown in figure 

 85. In breaking 

 away, the con- 

 necting portion 

 or veil, is freed 

 both from the 

 stem and from 

 the margin o f 

 the pileus, and 

 is left as a free, 

 o r loose ring, 

 around the stem. 

 In all of the 

 plants of our for- 

 mer study, the 

 common mush- 

 room (Agaricus 

 campestris) , the 

 smooth lepiota 

 (Lfpiota nauci- 

 na) , and the 

 deadly amanita 

 (Amanitap hallo- 

 ides) , the ring 



remained attached to the stem, i. e., it is not a free ring in those 



89. Coprinus comatus, early stage of diliquescence. 

 The ring is lying on the sod. (Natuial size.} 



