290 



Mycologia 



Russula sericeonitens Kauf¥man 

 Silky-shining Russula 



Plate 76. Figure i. X i 



Pileus regular, convex to plane or depressed, gregarious, reach- 

 ing 9 cm. broad; surface smooth, rather viscid, dark-purple, 

 blackish-purple at the center, not striate on the margin; context 

 rather thick, white, mild to the taste, odor not characteristic; 

 lamellae white, becoming slightly yellowish with age but not 

 ochraceous ; spores subglobose, roughly tuberculate, hyaline, 

 S-io fi; stipe cylindric, equal, smooth, dry, milk-white, 5-7 cm. 

 long, scarcely 2 cm. thick. 



Collected on the ground in oak woods near Bronx Park, New 

 York City, September 10, 1910, by W. A. Murrill. Described in 

 1909 from northern Michigan, where it is not uncommon in 

 mixed woods during July and August, usually growing solitary. 

 The spores of the typical plant are recorded as 6-7.5 /x. 



Russula Mariae Peck 

 Mary's Russula 



Plate 76. Figures 2 and 8. X i 



Pileus fleshy, convex and subumbilicate to depressed, reaching 

 7 cm. broad; surface dry, rose-red or purple with darker disk, 

 having a bloom like a peach, margin slightly striate at times, 

 especially in old plants ; context thin, of good flavor, white, pink- 

 ish under the cuticle, odor not characteristic; lamellae white or 

 stramineous, broad, subcrowded, interveined ; spores subglobose, 

 minutely conic-tuberculate, yellow, 7 fi ; stipe equal, solid, rosy, 

 sometimes partly white, glabrous, about 1.3-1.5 cm, thick. 



Common under oaks throughout the eastern United States. 

 Figure 8 represents the more usual form ; figure 2 shows a variety 

 having lilac or violet tints with a beautiful white bloom or prui- 

 nosity. This is one of our prettiest species, as well as one of the 

 best for the table. 



Russula emetica Fries 

 Emetic Russula 



Plate 76. Figure 3. X i 



Pileus regular, firm to fragile, convex to plane or depressed, 

 5-8 cm. broad; surface viscid when young, polished, red, often 



