Agaricaceae 



Russuia. vex and often umbonate, then plane and depressed, pellicle thin, becom- 

 ing pale, slightly viscid in wet weather; margin very thin, tuberculoso- 

 striate. Stem 1^-2 in. long, spongy within, soon hollow, often slightly 

 striate, white. Gills slightly adnexed, very thin, crowded, broad, ven- 

 tricose, all equal, shining white. Fries. 



Very acrid. Smaller and more fragile than the rest of the group, 

 directly changing color. The color is variable, often opaque, typically 

 flesh-color, when changed in color white externally and internally, often 

 with reddish spots. Among varieties of color is to be noted a livid 

 flesh-colored form, with the disk becoming fuscous. 



It is not easy to define it from fragile forms of R. emetica, but the 

 gills are much more crowded, thinner, and often slightly eroded at the 

 edge, ventricose; the pileus thinner and more lax, etc. Stevenson. 



Var. nivea Fr. nivea, snowy. Whole plant white. 



Spores minutely echinulate 8-iox8/u, Massee. 



Though one of the peppery kind, I have not, after fifteen years of 

 eating it, had reason to question its edibility. The caps are not meaty, 

 but what there is of them is good. 



R. puncta'ta G\\\&tpunctata, dotted. Mild. Pileus 1^-2 > in. 



across. Flesh thin, white, reddish under the cuticle; convex then flat- 

 tened, visdd, rosy, disk darkest, punctate with dark reddish point-like 

 warts, pale when old; margin striate. Gills slightly adnexed, 2 lines 

 broad, white then yellowish, edge often reddish. Stem about i in. 

 long, 4-5 lines thick, attenuated and whitish at the base, remainder 

 colored like the pileus, stuffed. 



Spores 8-9/A diameter Massee. 



Among grass. 



Edible. Boston Myc. Club Bull. 1896. 



*# 



Gills and spores white then yellowish or bright lemon. 



R. in'tegra Fr. integer, entire, whole. Pileus 4-5 in. across, typic- 

 ally red, changing color, fleshy, campanulato-convex then expanded 

 and depressed, fragile when full-grown, with a gluey pellicle, at length 

 furrowed and somewhat tubercular at the margin. Flesh white, some- 

 times yellowish above. Stem at first short, conical, then club-shaped 



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