The Agaricaceac of Ohio. ^71 



C." I'ik'us usiialK K•>-^ ili.iii _:; ciii. lnuafl; stipe hollow. 



S. ii2_'; St. ;vP ; ^1'- 3-'^'"': H- 344: .1- -"^l- '3:59- 



/-'. papilionaceus Vv. 

 B.- Pileus tan to sninkx black, etc.. not wliili-. 



C riK'U< with hrown m- hiackish zone ahout the 

 marj^in. 

 D.' I'ilcus coiiiral, acutcK' iiiuhonate. S. 1124; St. 



342; [. M. 13:59 /'. acuminatiis Fr. 



]).-■ I'iJcus campanulate, not nmlxiiiate. S. 1124; St. 

 342: Mc. 3S5: I. .M. i3:.'9: M- i 1'': \\- 342- 



l\ ftinicola Fr. 

 C.- Pileus not zohcmI ahout the margin. 

 D.' I'ileus moist or hygrophanous. 



h".' Pilous sooty-hlack when moist, not reticulate. 

 S. rT2i; St. 340; I. M. 13:60. 



P. sphinctriniis Fr. 

 E.- Pileus tan or brown, usually pink-tinged, 

 reticulate-rugose. S. 1120; St. 340; A. 

 45; H. 339; Ale. 384; J. M. 13:61. 



P. retinigis Fr. 

 D.' Pileus dry. not hygrophanous. 



E.^ Pileus hemispherical ; lamellae very hroad. 

 S. 1 122; St. 341 ; Mc. 386; H. 344; J. M. 



13 : 59 P. papUionaccus Fr. 



E." Pileus campanulate. S. 1121; St. 340; Mc. 

 386; J. M. 13:60: TT. 342: M. I 16. 



P. cauipanuhitiis Linn. 

 Notes. 



P. fimiputris is often placed in the genus Ancllaria. 

 P. phalaenarum lias not hcen definitely reported from 

 Ohio. 



PSATHYRELFA FR. 



A.' Pileus sulcate or plicate-sulcate. 



P).' I^ileus less than 15 nun. hroad. whitish to cinereous; 

 common. S. 1134; St. 346; Mc. 391 ; J. M. 13:54; H. 

 347 ; A. 48 ; M. II 7 P. tiissoiiiitata Pers. 



