NATURAL 6ISTORY SURVEY 61 



the cuticle, being sometimes merely pallid. Specimens 10 cm. or 

 more broad are not uncommon. 



Russula alutacea Fr. 



Pileus commonly bright blood-red, even black-purple, but 

 becoming pale, especially at the disk, fleshy, campanulate then 

 convex, flattened and somewhat umbilicate, even, with a- remark- 

 ably viscous pellicle, margin even, at length striate, tubercular; 

 flesh snow-white. 



Lamellae at first free, thick, very broad, connected by veins, 

 all equal, somewhat distant, at first pallid light-yellow, then 

 bright ochraceous, not pulverulent. 



Stem solid, stout, equal, even, white, most frequently varie- 

 gated reddish, even purple. Edible; taste mild and pleasant. 



Spores yellow, 7 to 9 /*. (Massee) ; 11 to 14 x 8 fi. (Saccardo.) 



Pileus 5 to 10 cm. broad; stem about 5 cm. long, 12 mm. thick. 



Ground in woods, Winfield. August. 

 Russula puellaris Fr. 



Pileus conic-convex then expanded, at first rather gibbous 

 then slightly depressed, scarcely viscid; color peculiar, purplish- 

 livid then yellowish, disk always darker and brownish, tubercu- 

 losely striate often to the imddle; flesh almost membranaceous 

 except at the disk. 



Lamellae adnate, very much narrowed behind, thin, crowded, 

 white then pale yellow, not shining nor powdered with the spores. 



Stem equal, soft, fragile, wrinkled under a lens, white or yel- 

 lowish, stuffed, soon hollow; taste mild. 



Spores subglobose, pale yellow, echinulate, 10 x 8 to 9 /n. ; 

 pileus 2.5 to 3.5 cm. broad; stem 2.5 to 3.5 cm. long, 4 to 8 mm. 

 thick. 



Grassy places in open woods, somewhat gregarious. Spores 

 ochraceous, subglobose, 7 to 9 /A. 



Russula ochrophylla Pk. 



Pileus firm, convex, becoming nearly plane or slightly depressed 

 in the center, even or rarely very slightly striate on the margin 

 when old, purple or dark purplish-red; flesh white, purplish under 

 the adnate cuticle; taste mild. 



Lamellae entire, a few of them forked at the base, subdistant, 

 adnate, at first yellowish, becoming bright ochraceous-buff when 

 mature, dusted by the spores, interspaces somewhat venose. 



Stem equal or nearly so, solid or spongy within, reddish or rosy 

 tinted, paler than the pileus. 



Spores bright ochraceous-buff, globose, verruculose, 10 /A.; 

 pileus 5 to 10 cm. broad; stem 3.5 to 5 cm. long, 12 to 20 mm. 

 thick. Edible. 



Ground in woods. Fort Sheridan. August. 



