118 



Section 4, Heterophyllae 

 Pileus flesh-color or pink. 

 Pileus yellow or ochraceous. 

 Pileus brown or gray-brown. 

 Color of pileus changing, variable. 



Stipe concolorous, pale flesh-color. 

 Stipe white. 



Margin of pileus tuberculate-striate, ochraceous. 

 Margin of pileus even, not striate. 



2. 



5- 



6. 

 7- 



R. polyphylla Pk.* 



R. elegans Bres. 

 4- 



Lamellae crowded, shining white. R. vesca Fr. 



Lamellae distant, white to pale pink. R. Morgani Sacc. 



Stipe whitish, equal; lamellae white, acrid, inodorous. R. granulata Pk. 



Stipe concolorous, equal ; lamellae yellow, acrid, inodorous. R. simillima Pk. 



Stipe white above, reddish below, ventricose ; lamellae white, 



discolored in drying. R. ventricosipes Pk.* 



6. Margin of pileus tuberculate-striate ; fetid. 

 Margin of pileus even ; inodorous. 



R. foetens ( Pers. ) Fr. 

 R. consobrina Fr. 



7. Pileus at first usually with some shade of red. 8. 

 Pileus never reddish, often dingy green ; mild. R. heterophylla Fr. 



8. Flesh white, acrid ; lamellae narrow. R. variata Bann. 

 Flesh red under the cuticle ; mild ; lamellae broad. R. cyanoxantha (Schaeff. ) Fr. 



Section 5, Fragiles 



1. Lamellae and spores white, not turning yellow. 

 Lamellae white, then yellow ; spores lemon-yellow 

 Lamellae and spores ochraceous. 



2. Pileus white or whitish. 

 Pileus some shade of yellow. 

 Pileus dark brown, then pale tan. 

 Pileus some shade of red. 



3. Pellicle not viscid or separable ; stipe solid. 

 Pellicle viscid ; stipe hollow or stuffed. 



4. Stipe short, 2-3 cm.; lamellae rounded behind. 

 Stipe longer, 5-8 cm.; lamellae subdecurrent. 



5. Taste mild. 

 Taste acrid or peppery. 



6. Small, 2-4 cm. ; margin striate ; lamellae interveined. 

 Larger, 4-6 cm.; margin even; lamellae not interveined 



7. Pileus tuberculate, rugose ; stipe spongy, tardily acrid. 

 Pileus polished, shining ; stipe solid, firm, elastic. 

 Pileus polished, shining ; stipe hollow or stuffed, fragile. R. fragilis (Pers. ) Fr 



8. Pileus white or pallid. R. adidterina (Fr. ) Pk 

 Pileus some shade of yellow. 9 



* Said by Professor Peck to belong probably in section Rigidae. 



3 



4 



R. pectinata Fr 



5 



R. anomala Pk 



R. albida Pk, 



R. ochroleuca (Pers.) Fr 



R. citrina Gillet 



6 



7 



R. wicia/is Pk 



R. purpiirina Quel 



R. mgulosa Pk 



R. emetica Fr 



