The Agaricaceae of Ohio. 569 



C." Stipe not fioccose-downy ; plants not on dung. 



D.^ Pileus with sparkling atoms, yellowish-brown; 

 usually on ground about stumps ; common. S. 

 1090; St. 354; Mc. 378; H. 335; M. 175. 



C. luicaccus (BuU.) Fr. 

 D.^ Pileus floccose-mealy ; usualh- on trunks or 

 stumps of trees. 

 E.^ Lamellae broad. S. 1083; St. 350; Mc. 374; 



M. 174 C. fitscesceiis (Schaeff.) Fr. 



E.- Lamellae narrow ; plants usually growing 

 from patch of brown mycelium (Ozo- 

 nium). S. 1092; St. 355. 



C. radians (Desm.) Fr. 

 A.^ Lamellae distant or subdistant; pileus very thin, plicate-sul- 

 cate; usually growing on dung or richly manured ground. 

 B.^ Pileus less than i cm. broad. 



C.^ Lamellae free. S. iioi; St. 358; M. 176. 



C. radiatus (Bolt.) Fr. 

 C.- Lamellae attached . S. 1106; St. 359; Mc. 382; H. 



337 C. ephenierus Fr. 



B.- Pileus usually more than i cm. broad. 



C.^ Lower part of stipe fioccose-downy. S. 1106; P. R. 



24: 71 ; M. 175 ; Mc. 382 C. sendlanatiis Peck 



Cr Stipe glabrous or nearly so. 



D.^ Lamellae free. S. iioo; St. 358; M. 176. 



C. nycthcnicriis Fr. 

 D.- Lamellae attached. 



E.^ Spores angled or angular. S. 1113; P. R. 



26 : 60 C. angulatiis Peck 



E.^ Spores elliptical. 



F.^ Disk of pileus raised; lamellae attached 

 to stipe. S. 1 106; St. 359; Mc. 382; 



H. 337 C. ephemerus Fr. 



F.- Disk at length depressed; pileus bluish- 

 gray, disk brownish or ruf escent ; 

 lamellae united to a collar at apex of 

 stipe. S. 1 108; St. 359; Mc. 383; M. 

 176 C. plicatilis (Curt.) Fr. 



