500 



Bulletin i68. 



(40) 



The cylindrical or barrel-shaped pileiis 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 of 

 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 

 tommon mush- 

 room {Agaricus 

 caynpestris) , the 

 smooth lepiota 

 {Lepiota riauci- 

 nd), and the 

 deadly amanita 

 i^Avianita phallo- 

 ides), the ring 



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



89. — Coprinus comaius, early stage of diliquescence 

 The ring is lying on the sod. {Natuial size.) 



