'500 Proceedings of the Ohio State Academy of Science. 



TI.- Lamellae decurrent; pileus hy- 

 grophanous. 

 1/ Stipe pruinate-pulverulent 

 above ; plants with fari- 

 naceous odor. S. 185 ; 

 H. 95; Mc. 109; St. 91. 

 C. metachroa Fr. 

 I.- Stipe glabrous, plants with- 

 out odor. 

 J.^ Margin of pileus even. 

 S. 186; Mc. 109; H. 

 - 99. . . C. ditopoda Fr. 

 J.- Margin striate w h e n 

 moist. S. 9:26; H. 

 99; P. R. 42:18. 

 C. subditopoda Peck 

 D.^ Pileus umbilicate to infundibuliform. 

 E.^ Pileus white or whitish. 



F.^ Plants growing on wood ; stipe often 

 eccentric ; pileus lobed and irregular. 

 S. 16:24; B. T. 25:321; Oh. Nat. 



10 : 1 78 C. eccentric a Peck 



F." Plants growing among leaves or grass. 

 G.^ Lamellae adnate; pileus less than 

 3 cm. broad. S. 157; H. 104; St. 

 78; Mc. 93... C. dcalhata Sowerb. 

 G." Lamellae soon decurrent ; pileus 

 usually 4 cm. or more broad. 

 H.^ Lamellae narrow. S. 180; P. R. 

 54:174; H. 95. 



C. adirondackcnsis Peck 



H.- Lamellae rather broad. 



L^ Lamellae close, always Avhite; 



plants growing on pine 



leaves. S. 155; H. 99; 



Mc. 91 ; St. yy. 



C. pithyophila Fr. 



