TJie Agaricaccac of Ohio. 537 



longer, entirely white. S. 532; J. 

 M. II : 237; M, 192. 



M. opacus B. & C. 

 C.- Pileus yellowish, brownish, reddish-brown, etc. 

 D.^ Lamellae free or seceding. 



E.^ Lamellae brown or brownish; stipe not stri- 

 gose at base. S. 511; P. R. 23: 125; J. 



M. II : 205 ; M. 190 M. plancus Fr. 



E.- Lamellae whitish; stipe strigose at base. S 

 S:^?^\ T. M. II : 208. . .M. sullivantii Mont. 

 D.- Lamellae adnate or adnexed. 



E.' Stipe distinctly velvety, tomentose or hairy. 

 F.^ Lamellae distant or subdistant. 



G.' Hants growing on old wood ; stipe 

 long rooting. S. 537; J. M. 11 : 



239 M. macrorrhisus Mont. 



G.- Plants growing on ground among 

 leaves, etc. ; stipe not definitely 

 rooting. 

 H.^ Pileus plicate-striate. M. 191 ; 

 J. M. II : 239. 



M. pyrrocephalns Berk. 

 H.- Pileus not plicate-striate. 



L^ Stipe glabrous toward the 

 top, not thickened at the 

 base. S. 517; P. R. 25 : 

 79-80 ; J. M. 11: 206 ; H. 



145- 



M. semihirtipes Peck 



I.^ Stipe thickened at the base, 



not glabrous at the top. 



S. 513; J. M. 11: 203. 



Af. spongiosus B. & C. 



F.- Lamellae close. 



G.^ Pileus striate when moist. 



H.^ Pileus not more than 12 mm. 

 broad ; stipe rooting, usually 



