The Agaricaccac of Ohio. 475 



I.^ Lamellae usually decurrent, 

 sometimes adnate at least 

 when young. 



Clitocybe (497) 



II.- Stipe cartilaginous, confluent 



with pileus but of different 



lextiu'e. 



1/ Lamellae decurrent; pileus 



umbilicate. 



Omphalia (511) 

 L^ Lamellae not truly decurrent; 

 pileus not umbilicate or 

 rarely so. 

 J.^ Pileus typically campanu- 

 late ; margin straight 

 from the first ; la- 

 mellae adnate or un- 

 cinate. 



Mycena (508) 

 J." Pileus not campanulate, 

 usually convexo-plane ; 

 margin at first in- 

 rolled ; lamellae free 

 or obtusely attached. 

 Collybia (502) 

 ]".-' Trar.ia vesiculose (hyphae often en- 

 larged, in sections giving the api)ear- 

 ance of rounded cells), 

 n.^ Plants with a milky or colored juice. 

 Lactaria (519) 

 G.- IMants with watery juice. 



Russula (525) 



RHODOSl'ORAE. 



A.' .Sti])e eccentric or wanting. 



];.' I'ileus Ip.r-yc. usually glabrous; lamellae white or whilisli. 



Pleurotus (513) 



