Agaricacese 



Eussuia. cuticle, taste tardily acrid. Lamellae rather close, adnate or slightly 

 rounded behind, white. Stem nearly equal, spongy within, white. 

 Spores white, rough, subglobose, 8-io/x, broad, shining in transmitted 

 light. 



The rugulose russula is closely related to the emetic russula, but dif- 

 fers from it in the uneven or rugulose surface of the cap, in the tardily 

 acrid taste and in its closer adnate gills. Its cap is red, varying from 

 pale-red to dark-red, viscid when moist, even on the margin when 

 young, but somewhat tuberculate and striate when old. Its surface is 

 roughened by minute tubercles or pimples, which sometimes appear to 

 run together and form short ridges. These are sometimes absent from 

 the center of the cap. The viscid cuticle easily peels from the margin 

 of the cap, but not from the center. The flesh is white, except just 

 under the cuticle, where it is reddish. It is soft and fragile, and its 

 taste is slowly and much less sharply acrid than in the emetic russula. 

 Its gills are closely placed, attached to the stem and persistently white. 

 The stem is brittle, soft and spongy within, smooth and white. The 

 cap is 2-4 inches broad, the stem 2-3 inches long, 4-8 lines thick. 



It grows in woods among mosses and fallen leaves or on the bare 

 ground, and appears in August and September. It is an inhabitant of 

 the Adirondack forests. Its slightly acrid flavor is destroyed in cook- 

 ing, and it affords a harmless, tender and agreeable food. Peck, 54th 

 Rep. N. Y. State Bot. 



RllSSllla abietina n. sp. Fir Tree Russula. PileuS thin, fragile, 

 convex, becoming nearly plane or slightly depressed in the center, 

 viscid when moist, the viscid pellicle separable, tuberculate striate on 

 the margin. Flesh white, taste mild. Lamellae subdistant, ventri- 

 cose, narrowed toward the stem, rounded behind and nearly free, whit- 

 ish, becoming pale yellow, the interspaces venose. Stem equal or 

 tapering toward the top, stuffed or hollow, white. Spores bright yel- 

 lowish ochraceous, subglobose, rough, 8 lOyu, broad. 



The fir tree russula is closely related to the youthful russula, R. puel- 

 laris Fr., from which it is separated by the viscid cap, the gills rather 

 widely separated from each other and nearly free, the stem never yel- 

 lowish nor becoming yellow where wounded, and the spores having an 

 ochraceous hue. They are much brighter and more highly colored in 

 the mass than the mature gills. The cap varies much in color, but the 



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