Murrill: Illustrations of Fungi 



291 



fading to pallid or yellowish, cuticle separating very readily ; con- 

 text white, reddish under the cuticle, very acrid to the taste; 

 lamellae white, then dull-yellowish, free, subdistant, broad, equal ; 

 spores globose, echinulate, hyaline, S-iO/x; stipe rosy or whitish, 

 glabrous, spongy-solid, 3-7 cm. long, 1-1.5 cm. thick. 



Common in woods throughout Europe and the eastern United 

 States, often growing where logs have decayed. Distinguished 

 by its red color, viscid surface, readily separating cuticle, and 

 very acrid taste. In addition to its acrid quality, it is definitely 

 poisonous, containing small quantities of choline, pilzatropine, 

 and probably muscarine. When taken in any quality, it acts 

 as a prompt emetic. It is mainly because of this species that 

 most specimens of Russuia should be tasted before selecting 

 them for food. 



Russuia sulcatipes sp. nov. 



FURROWED-STEMMED RuSSULA 

 Plate 76. Figure 4. X i 



Pileus convex to plane or depressed, reaching 7 cm. broad ; 

 surface dry, pruinose, smooth, pale avellaneous-isabelline, slightly 

 striate on the margin, becoming more conspicuously so on dry- 

 ing; context very thin, white, very firm, mild and nutty to the 

 taste, odor not characteristic; lamellae white, becoming cream- 

 colored or somewhat darker on drying, adnate, plane, subdistant ; 

 spores globose, roughly tuberculate, hyaline under a microscope, 

 y-gii\ stipe equal or slightly enlarged below, with rather con- 

 spicuous longitudinal raised lines, milk-white, glabrous, solid, 

 about 5 cm. long and 1.3 cm. thick. 



Type collected on the ground in oak woods near Bronx Park, 

 New York City, September 10, 1910, by W. A. Murrill. 



Russuia obscura Romell 



Obscure Russula 



Plate 76. Figure 5. X i 



Pileus convex to expanded or depressed, reaching 12 cm. broad ; 

 surface slightly viscid, vinosous at the center, much paler vinos- 

 ous toward the margin, slightly striate on the immediate margin, 

 usually decorated with bits of earth and leaves that are carried 

 upward as the sporophore emerges from the soil; context white, 

 at first mild, at length somewhat peppery; lamellae white or 



