526 Proceedings of the Ohio State Academy of Science. 



A.- Lamellae equal or with a few shorter ones. 

 B.^ Stipe yellow, at least at base. 



C.^ Pileus red, becoming yellowish at center or entirely 

 so ; stipe orange-yellow at base ; lamellae pale 

 ochraceous. S. 17: 34; B. T. 31: 179; Oh. \at. 



10: 177 R. luteobasis Peck 



C.- Pileus wiiolly yellow, sometimes mealy ; stipe wholly 

 yellow; lamellae white. M. B. 116: 78; K. /2; 



Mc. 197 ; .S. 9 : 60 R. tiavida Frost 



B.- Stipe white or whitish, red or reddish. 

 C.^ Lamellae forking much throughout. 



D.' Lamellae close; pileus purplish, umber or green 

 or with these colors mingled. '\l. B. 105 : 41 ; 



K. 73; H. 190 R. variata Bann. 



D.- Lamellae subdistant; pileus yellowish-green or 

 umber-green. S. 456; M. B. 116: 74; K. 73; 

 Mc. 191; H. 194; St. 2: 116. 



R. f areata (Pers.) Fr. 

 C.-Lamellae not often forking or only near stipe. 



D.' Lamellae or spores, usually both, white or whit- 

 ish to cream color. 

 E.' Pileus .some shade of red or puri)le. 

 F.' Taste acrid. 



G.^ Pileus dry, margin even. .S. 462; ^L 



E. 116: 79; St. 2: 120; K. 67; 



Ale. 196; H. 195.... 7?. rubra Fr. 



G.- Pileus viscid or subviscid ; margin 



striate or sulcate, tuberculate. 



H.^ Pileus 2-5 cm. broad; lamellae 



close. S. 472; St. 2: 126: AI. 



B. 116: 88; Ale. 203; H. 192; 



St. 2: 126. 



R. fragilis (Pers.) Fr. 



H.- Pileus usually 5-10 cm. broad; 



lamellae subdistant. S. 469; 



M. B. 116: 87: K. 78; Ale. 



201 : TT. 193 : St. 2 : 125. 



R. einetica Fr. 



