526 Proceedings of the Ohio State jleadeiiiy of Science. 



A.'- Lamellae equal (jr with a few slunler cnies. 

 B.' Stipe yellow, at least at base. 



C/ Pilcus red. becoming yellowish at center or entirely 

 so; stipe orange-yellow at base; lamellae pale 

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



10: 177 R. lutcobasis Peck 



C.- Pileiis wholly yellow, sometimes mealy; stipe wholly 

 yellow: lamellae white. M. B. 116: 78; K. J2; 



]\Ic. 197 ; S. 9: 60 R. tiai'ida Frost 



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

 C} Lamellae forking much throughout. 



D.^ Lamellae close; pileus purplish, lunber or green 

 or with these colors mingled. ]\L B. 105: 41; 



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



D.- I,amellae subdistant; pileus yellowish-green or 

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

 ]\Ic. 191; H. 194; St. 2: 116. 



R. fnrcata (Pers.) Fr. 

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



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

 ish to cream color. 

 E.' Pileus some shade of red or purple. 

 F.^ Taste acrid. 



G.' Piletis dry, margin even. S. 462 ; M. 



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



Mc. 196; H. 195.... 7?. nihra Fr. 



G.- Pileus viscid or subviscid ; margin 



striate or sulcate, tuberculate. 



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



close. S. 472; St. 2: 126: ^I. 



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



St. 2: 126. 



R. fragilis (Pers.) Fr. 



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



lamellae subdistant. S. 469 ; 



M. B. 116: Sy: K. 78; Mc. 



201 ; H. 193 ; St. 2 : 125. 



R. cmetica Fr. 



