TJie Agaricaceae of Ohio. 535 



J. Al. 1 1 : 245 ; Jour. Cin. Soc. Xat. 

 I list. 18: 36, (pi. r f. 2). 



M. melanopus Morg. 

 A.- Stipe pruinatc, pubescent, velvety-tomentose, etc., not gla- 

 brous. 

 B.^ Stipe solid or stuffed, not hollow at least when young, 

 not horny. 

 C.^ Taste mild; stipe not strigose or downy at the base. 

 D.^ Lamellae broad, whitish or yellowish. S. 510; 

 Ale. 224; A. 131; H. 136; St. 2:142; J. AI. 

 II : 205 ; AI. 190; P. R. 23 : 124. 



^1/. orcadcs Fr. 

 D.- Lamellae narrow, brown or brownish. S. 511; 

 AL 190; J. AL II : 205 ; P. R. 23 : 125. 



il/. plane us Fr. 

 C.- Taste acrid or bitter; base of stipe strigose or con- 

 spicuously downy. 

 D.^ Margin of pileus not striate; lamellae free, dis- 

 tant. S. 504 ; St. 2 : 140 ; PL 138 ; A-Ic. 223 ; AL 



189 ; J. M. 11: 202 M. urcns Fr. 



D.- Alargin striate; lamellae attached or seceding,, 

 close or subdistant. 

 E.^ Lamellae rather broad, close ; stipe )-ellow 

 or rufescent. S. 504; J. AL 11:204; St. 

 2: 141 ; H. 148, 149; AL 190; Ale. 223. 



M. peronatns Fr. 

 E.- Lamellae narrow, subdistant ; stipe reddish- 

 brown above, to blackish-brown at base. 

 S. 16:57; P- R- 51:287; J. AL 11:202. 

 il/. siibnudus (Ellis) Peck 

 B.- Stipe hollow. 



C.^ Pileus white, whitish or pallid. 

 D.^ Lamellae decurrent. 



E.' Pileus usually less than 6 mm. broad. J. A[. 



12: 6; AT. r93 M. cJavaeformis Berk. 



E.- Pileus 6-15 mm. broad. S. 561; J- AL 12:5. 



-1/. Icucoccplialus Alnnt. 



