LACTARIAE ОЕ THE UNITED STATES 71 
Vermont, Jones, Frost, Burlingham 30, 1906 ` Massachusetts, Davis ; 
Connecticut, Earle, Hanmer 2335; Pennsylvania, Herbst; Mary- 
land, Shear ; Alabama, Earle; North Carolina, Burlingham 44, 
1907 ; California, Patterson. 
Плозт.: Вапа, Champ. Nice, //. 27. f. 14-16; Bull. Herb. Fr. 
pl. 567. f. 2; Cordier, Champ. Fr. pl. 27. f. 2; Gillet, Champ. 
Fr. M. 164. [396] ; Krombh. Abbild. A. г. f. 23, 24; Lanzi, 
Fung. Mang. AX. 32. f. 3, а, b,c; Paulet & Lév. Icon. Champ. f. 
71. f. 1-4; Rich. & Roze, Atl. Champ. Fr. M. 37. f. 7-9; 
Sicard, Hist. Nat. Champ. A. 43. f. 233. 
Exsic.: Ellis & Everhart, М. Am. Fungi 7915; Arcangeli, 
Erb. Син. Ital. ser. 2, $07; Herpell, Sammlung prapariter Hut- 
pilze 132. 
DISTINGUISHING FIELD-MARKS: This species is somewhat diffi- 
cult to determine from a description because of the rather wide 
variations it shows in different habitats. The latex more or less 
quickly turns to sulphur-yellow and the broken flesh has at first 
a pungent and characteristic odor which is an assistance in dis- 
tinguishing the plant. The milk and the odor, together with 
the yellowish-salmon, sometimes more or less fulvous, color of the 
faintly zonate, slightly viscid pileus, will serve as determining char- 
acteristics for typical forms. The viscidity disappears very readily 
and the pileus is often absolutely dry and shining. 
In shady dry woods, I have found the pileus to be rather pale, 
varying from whitish to pale-flesh color (7 36.1. 4) and from azonate 
to obscurely zonate as in my #05. 30B, 1906, and 2, 1907, while in 
wet localities or in the open, I have found the color more yellowish- 
salmon or approaching fulvous, and the zones well marked. Vo. 
68, 1907, which was growing in a little hollow made very wet by 
rain, was a striking example of this tendency. Nos. 1012 and 
1357, herb. N. Y. Bot. Garden, collected by Earle, are inter- 
mediate forms between such pale forms as are represented by Т. 
brevis Peck or L. brevipes Longyear, and the more distinctly 
zonate forms. Z. brevis Peck seems to me to be an extreme form 
of Г. theiogala (Bull.) Fr., and, although the original description 
gives the pileus as azonate, the type specimens show in some 
cases faint indications of zones. Further, the presence of tomentum 
on the stem base of 2. theiogala is not constant, but may be found 
