-568 Proceedings of the Ohio State Academy of Science. 



F.- Plants not growing on trunks. 



G.^ Spores smooth ; plants in rich soil 

 and grassy places ; pileus grayish- 

 brown to lead-colored. S. 1081 ; 

 St. 350; H. 333; A. .40; Mc. 373; 

 M. 174. 



C. atramentarius (Bull.) Fr. 

 G.- Spores rough ; plants growing about 

 stumps in woods ; pileus grayish- 

 brown. S. 1082; P. R. 26: 60; M. 



175 C. insignis Peck 



C.- Scales of pileus large, superficial ; formed by break- 

 ing apart of the universal veil ; or pileus densely 

 villous or mealy-floccose. 

 D.^ Stipe annulate, at least when young ; plants on 

 stumps, soil or old leaves. 

 E.^ Scales of pileus ochraceous. S. 1082 ; P. R. 



25 : 79; M. 174 C. variegatus Peck 



E.2 Scales of pileus white. S. 14: 158; H. 336; 



B. T. 22 : 491 C. ebitlbosns Peck 



D.^ Stipe not annulate ; plants usually on dung. 



E.^ Pileus cylindrical to conic. S. 1087; St. 352; 



H. 338; Mc. 376 C. fimctarius Fr. 



E.^ Pileus ovate to campanulate. 



F.^ Pileus and stipe downy-villons, at least 

 when young, white ; lamellae adnexed. 

 S. 1088; St. 353; Mc. 378; ]\J. 175. 



C. niveus (Pers.) Fr. 

 F.^ Pileus bufif to darker, with large scales ; 

 stipe nearly glabrous ; lamellae free. 

 S. 16: 130 ;"b. T. 26:68. 



C. laceratus Peck 



P^.^ Pileus with sparkling atoms or with meaty particles, at 



least when young. 



C.^ Lower part of stipe floccose-downy, plants on dung 



or ground. S. 1106; Mc. 382; P. R. 24:71; M, 



175 C. scmilanatus Peck 



I 



