LACTARIAE OF THE UNITED STATES 101 
Pileus fleshy, thin, firm, convex, papillate, becorhing depressed 
to infundibuliform, fulvous (308), isabelline (309), or reddish-fulv- 
ous, not fading, azonate, dry, glabrous, smooth, 1.5-5 cm. broad, 
margin involute, then spreading, sometimes flexuous ; gills whit- 
ish or tinted with isabelline, becoming pruinose, sometimes fork- 
ing, close, adnate or decurrent by a tooth, up to 3 mm. broad ; 
stem of the same color as the pileus or paler, nearly equal or 
tapering upwards, glabrous, or sometimes slightly pubescent at 
the base, dry, stuffed, becoming hollow, 2-7 ст. long, 2-6 mm. 
thick ; flesh whitish or tinted with isabelline or fulvous, odor none ; 
spores white, globular to broadly elliptical, echinulate, 7 x 8 м; 
latex white, unchanging, mild or slowly acrid to bitterish. Ædible. 
Нав.: In the woods or on the border of woods, common. 
July to September. 
DISTRIB. : New York, Peck, Earle; Vermont, Jones, Burling- 
ham 9, 1906; Maine, White, Murrill ; Connecticut, Underwood ; 
New Jersey, E//is, Murrill & Earle; Pennsylvania, Murrill ; Nir- 
ginia, Murrill ; Alabama, Underwood & Earle ; Illinois, Glatfelter ; 
Ohio, Beardslee; Missouri, Glatfelter ; North Carolina, Bur- 
lingham. 
Плозт.: Вапа, Champ. Nice, M. 20. f. 4-10 (poor); Bern. 
Champ. Roch. ai 38. f. 1. (bad) ; Bolt. Geschichte, p/. 3; Britz. 
Lact. f. зг; Bull. Herb. Fr. A4. 224. f. А, В; Cooke, Br. Fungi, 
pl. 1002 (poor); Cordier, Champ. Fr. pl. 26. f. 1 (very bad); 
Gillet, ai тут, [393] ; Hahn, Der Pilz-Sammler, f. 13 (poor) ; 
Harzer, Pilze, al 53 (very bad); Lanzi, Fung. Mang. pl. 51. f. 
3; Quél. Champ. Jura, ai. 17. f. 3 (bad); Roumeg. Crypt. Ilust. 
f. 141 (uncolored); Sicard, Hist. Nat. Champ. А 44. /. 238; 
Sowerby, Eng. Fungi, 2/. 204, Agaricus lactifiuus (?). 
Exsic.: Ellis & Everhart, Fungi Columbiani 7736 ; Herpell, 
Sammlung praparirter Hutpilze 48 ; Karsten, Fungi Fennici 510; 
Thiimen, Fungi Austriaci 973 ; Sydow, Mycotheca Marchica 3320. 
DISTINGUISHING FIELD-MARKS: The fulvous or isabelline color 
of the pileus and stem, the rather thin but firm pileus, which is 
dry, glabrous, and usually smooth, the lack of odor when fresh 
or in drying and the mild then slightly bitterish-acrid taste of the 
white latex. The plants are comparatively small and slender. 
There seems to be much variation in the color of the plants as 
well as in the form. I have found specimens which differed from 
the typical Z. suódu/cis only in having the margin distinctly striate, 
