88 NEW YORK STATE MUSEUM 



Russula rugulosa Pk. 



RUGULOSE RUSSULA * 

 State Mus. Rep'l 54. 1901. p. 179, pi. ^2, fig. 12-18. 



Pileus rather thin, fragile, convex becoming nearly plane or cen- 

 trally depressed, viscid when moist, uneven with small tubercles and 

 wrinkles, even on the margin when young, becoming tuberculose 

 striate with age, the viscid pellicle separable on the margin, flesh 

 wdiite, reddish under the pellicle, taste acrid or tardily acrid ; la- 

 mellae moderately close, adnate or slightly rounded behind, white ; 

 stem nearly equal, spongy within, white; spores white, subglobose, 

 .0003-.0004 of an inch long, nearly or quite as broad. 



Pileus 2-4 inches broad ; stem 2-3 inches long, 4-8 lines thick. 



Woods among mosses and fallen leaves. Franklin county. 

 August and September. Edible. 



Most closely allied to R. emetica Fr. from which it is dis- 

 tinguished by its rugulose pileus and less acrid or tardily acrid taste. 

 The slight acridity is dispelled in cooking and it affords a harmless, 

 tender and agreeable food. From R . v e s c a Fr. it may be dis- 

 tinguished by its tardily acrid taste and its striate margin. 



Russula fallax (Schaeff.) Sacc. 

 FALLACIOUS RUSSULA 



Pileus thin, fragile, convex or nearly or quite plane, viscid when 

 moist, reddish with a darker center, flesh white, taste acrid ; lamellae 

 thin, adnexed, distant, whitish or pallid; stem slender, subequal, 

 white ; spores white, subglobose, .0003 of an inch long. 



Pileus 1-2 inches broad ; stem 1-2 inches long, 3-5 lines thick. 



Moist places. Not rare. August. 



This is R . emetica var. fallax Cke. and R . f r a g i 1 i s 

 var. fallax Massee. We have followed Saccardo in recognizing 

 its specific validity. In our specimens the lamellae appear to be 

 less distant than in the typical form, but in other respects the agree- 

 ment is good. 



Russula fragilis (Pers.) Fr. 

 FRAGILE RUSSULA 



Pileus very thin and fragile, convex becoming plane or slightly 

 depressed in the center, with a thin pellicle somewhat viscid when 

 moist, sometimes umbonate, tuberculose striate on the margin, pol- 

 ished, variable in color, typically pale red, sometimes fading to white. 



