CLASSIFICATION OF AGARICS 147 



1-2.5 cm. thick, stout, long, spougy or solid, wrinkled rivulose, white, 

 the flesh hccoinmg cinereous icith age or where bruised. SPORES 

 subglobose, echinulate, pale ochraceous-yellow, 7-9 micr. TASTE 

 mild. ODOR none. 



Solitary or scattered. In coniferous or mixed woods of northern 

 Michigan. July, August and September. Frequent. 

 - The large size, globose young pileus, orange-red color and the 

 changing flesh easily distinguish it. R. depallens Fr. in which the 

 flesh turns ashy has not with certainty been found. It is said to 

 have whitish gills, and the color of the pileus is dirty red to fawn. 

 R. decolorans appears to prefer the regions of the pine and fir, both 

 in this country and in Europe. 



Var. riibriceps Kauff. 



Mich. Acad. Sci. Rep. 13, p. 215, 1911. 



The shape of the young and old pileus of this variety is well 

 represented in Cooke's figure of R. decolorans, Plate 1079. The 

 color of the pileus is, however, ruder-red (Sacc. colors) and persist- 

 ent, changing only in age or on drying as a result of the cinerescent 

 flesh. The pellicle is aduate, scarcely separable except on the mar- 

 gin, vanishing on the disk and sometimes ochraceus-spotted where 

 the pellicle has disappeared. It is firm and the margin is not 

 striate or very slightly so in age. These characters ally it to the 

 Rigidae. It is slightly viscid. FLESH is firm, white, tinged ashy 

 in age, decorning dark cinereous on the stem where 'bruised. The 

 taste is mild and when fresh was taken for R. lepida. SPORES 

 creamy-white in mass. It is smaller, at least in our specimens, 

 than the type. 



On the ground in beech and white pine woods. New Richmond, 

 Allegan County. September. Apparently rare. 



124. Russula flava Romell (Edible) 

 Lonnegren's Nordisk Svampbok, 1895. 

 Illustration : Mich. Acad. Sci. Rep. 11, p. 55, Fig. 3. 



PILEUS 5-8 cm. broad, rather fragile, convex, then piano- 

 depressed, even or slightly striate in age, dry in dry weather, some- 

 what viscid when moist, pellicle separable, dull yellow (flavus, 

 Sacc), color hardly fading, but sometimes ashy, discolored in age. 

 FLESH white becoming cinereous with age. GILLS white at first, 

 becoming yellowish, broadest towards front, narrowly adnate, close, 

 distinct, becoming slowly gray in age. STEM chalk-white at first, 



