88 BuRLINGHAM: LACTARII FROM VERMONT 
pruinosity, glabrous, dry, nearly equal, becoming hollow, 1 cm. 
or less in length, 2-3 mm. thick; spores slightly cream-colored, 
mostly globular, some slightly elliptical, echinulate, 5-6.5 y or 
rarely 6.5 by 8 ; flesh of pileus gray, of stem buff; milk white, 
unchanging, acrid. 
In black soil in a wet place at times overflowed, under yellow 
birch and young spruce woods, 500 m. elevation, July to Sep- 
tember ; Newfane, Agnes H. Bensley. 
This species is gregarious and sometimes cespitose. As many 
as 35 were found growing in an area of less than one square foot. 
It can be distinguished from Lactarius griseus Peck, by its minute 
size, its dark-colored and frequently zoned pileus, and by the short 
and dense hirsute-pubescent covering of the pileus. 
Lactarius isabellinus sp. nov. 
Pileus fleshy, not very thick, convex, then broadly convex, at 
length infundibuliform, umbonate, dry, glabrous, but a little rough- 
ened and wrinkled in the center especially when mature, azonate, 
red-fulvous in the center, buff toward the margin, all fading to 
buff when mature, 3-4.5 cm. broad; margin glabrous, even or 
faintly striate when old, and sometimes areolate-wrinkled ; gills 
pale-yellowish, becoming reddish .where bruised, crowded, thin, 
forking near the stem or midway to the margin, slightly decurrent, 
3 mm. broad, or twice as broad as the thickness of the flesh ; stem 
the same color as the pileus, equal or slightly tapering upwards, 
tomentose at the base, stuffed, becoming hollow, 4 cm. long, 6 
mm. thick ; spores white, slightly echinulate, 6-7.5 by 7-8.5 #3 
flesh white, staining yellowish from the milk; milk white, at 
length (after five minutes) becoming sulphur-yellow, astringent, 
then acrid, abundant. 
In leaf mold, moist open place in mixed woods, 460 m. eleva- 
tion, warm dry weather, September ; Newfane. 
The milk changes color slowly, and sometimes a drop will not 
seem to change, but the milk always dries yellow on the flesh. 
The species was found but once ; then, however, several specimens 
in various stages of development. 
Lactarius minusculus sp. nov. 
Pileus fleshy, thin, broadly convex, with a small umbo, be- 
coming plane then somewhat depressed in the center, glabrous, 
viscid in wet weather, sometimes shining with viscidity, azonate, 
fulvous in the center, shading to cream-fulvous, then to cream on 
