568 Proceedings of the Ohio State Academy of Science. 



F.- Plants not growing on trunks. 



G.' Spores smootli : plants in rich soil 

 and grass}- 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 



R.- Scales of pileus white. S. 14: 158; H. 336; 



B. T. 22 : 491 C. ehiilbosiis Peck 



D.- Stipe not annulate; plants usualh- on dung. 



E.^ Pileus cylindrical to conic. S. 1087: St. ^52; 



H. 338; Mc. 376 C. finefariiis Pr. 



E.^ Pileus ovate to campanulate. 



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

 when young, white; lamellae adnexed. 

 S. 1088; St. 353; Mc. ,]7S; AI. 175. 



C. niz'eus (Pers.) Fr. 

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

 stipe nearly glabrous ; lamellae free. 

 S. 16 : 130 :' B. T. 26 : 68. 



C. hn-cratiis Peck 



B.- Pileus with sparkling atoms or with mealy particles, at 



least when young. 



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



or ground. S. 1106; -\Ic. 382; P. R. 24:71; M. 



175 C. semilanatus Peck 



