NATURAL HISTORY SURVEY 59 



Lamellae adnate then decurrent, thin, crowded, unequal, 

 white then dingy, not reddening when touched. 



Stem solid, obese, concolorous with the pileus. 



Spores sphaeroid, echinulate, 7 to 9 /*. Pileus 5 to 15 cm. 

 broad, stem 3 to 6 cm. long, 1 to 1.5. cm. thick. 



Woods, Glencoe. August. Watson. 



Russula lactea Fr. 



Pileus at first milk-white, then tan-white, compactly fleshy, 

 campanulate then convex, often eccentric, without a pellicle, 

 always dry, at first even, then slightly cracked when dry; margin 

 straight, thin, obtuse, even; flesh compact, white. 



Lamellae free, very broad, thick, distant, rigid, forked, white. 



Stem solid, very compact, but at length spongy-soft within, 

 equal, even, always white. 



Spores subglobose, echinulate, 7 to 9 //.. Pileus 5 cm. broad; 

 stem 3.5 to 6.5 cm. long, 2 to 3 cm. thick. 



In open woods, Glen Ellyn. August. 



Russula virescens Fr. 



Pileus green, compactly fleshy, globose then expanded, at 

 length depressed, dry, not furnished with a pellicle, the flocculose 

 cuticle broken up into patches or warts; margin straight, obtuse, 

 even; flesh white. 



Lamellae free, somewhat crowded, sometimes equal, some- 

 times forked w r ith a few shorter ones intermixed, white. 



Stem solid, internally spongy, firm, somewhat rivulose, white. 

 Taste mild. It varies in color, sometimes deep and sometimes 

 pallid green, sometimes yellowish then green. 



Woods throughout our district. Not common. July to 

 September. Edible. 



Prof. Harshberger states that the box tortoise (Cistudo vir- 

 ginica) is extremely fond of this species. (Journ. Myc. 8: 156.) 



Russula rubra Fr. 



Pileus unicolorous, cinnabar-vermilion but becoming pale tan 

 when old, disk commonly darker, compact, hard but fragile, 

 convex then flattened, here and there depressed, absolutely dry, 

 without a pellicle, but becoming polished-even, often rivulous- 

 rimose when old, margin spreading, obtuse, even; flesh white, 

 reddish under the cuticle. 



Lamellae obtusely adnate, somewhat crowded, whitish then 

 yellowish, with dimidiate and forked ones intermixed. 

 . Stem solid, even, varying white and red. Very acrid. 



Spores sphaeroid, 8 to 10 p.; pileus 2.5 to 10 cm. broad; stem 

 5 to 7.5 cm. long, about 2.5 cm. thick. 



In open woods, Glencoe. August. Laxly gregarious. Taste 

 acrid, bitterish; plant very firm and rigid; stems in our specimens 

 wholly whitish, sometimes even, but oftener attenuated down- 

 wards. Spores whitish, very slightly rough, globose, 7 to 9 /*. 



