LACTARIAE ОЕ THE UNITED STATES 81 
gray (363), becoming yellowish with аре (putty-colored, 311), 
azqnate, dry, minutely tomentose, becoming floccose-tomentose, 
sometimes appearing squamulose to the naked eye, 1-5 cm. broad, 
margin involute, then spreading, entire; gills white, becoming 
cream-colored to honey-yellow, and pruinose, seldom forking, 
close, adnate to slightly decurrent, broader than the thickness of 
the pileus; stem of the same color as the pileus or paler, nearly 
equal, dry, glabrous except at the base, which is sometimes pu- 
bescent, stuffed, then hollow, 1.5-6 cm. long, 3-6 mm. thick ; 
flesh white, unchanging, not aromatic; spores white, broadly 
elliptical, echinulate, 6-7 их 8-9.5 и; latex white, unchanging, 
slowly acrid. (FIGURE 14.) 
Has. : In moist, mossy places in either coniferous or deciduous 
woods, on the ground or on decaying logs. July, August, and 
September. 
DISTRIB.: New York, Peck, Earle, Benedict, Burlingham ; 
Vermont, Jones, Burt, Burlingham 2, 1906 ; Maine, White ; Con- 
necticut, Underwood & Earle, Benedict; North Carolina, 1000 
meters, Burlingham 85, 1907. 
DISTINGUISHING FIELD-MARKS: The gray, tomentose, azonate, 
expallent pileus, the glabrous stem, and the lack of odor. While 
the plants may be dark-gray at first, they usually become dull- 
yellowish or putty-colored when mature. This species is closely 
related to L. mammosa Fr., a European plant which has not been 
found in the United States. Аз figured by Fries, Г. mammosa is 
a larger, stouter plant than Г. grisea, it does not become yel- 
lowish with age, and it has a white pubescence on the margin of 
the young pileus, and the stem is pubescent. L. grisea is at first 
uniformly gray and covered with gray tomentum, which later 
becomes floccose and less evident. 
49. Lacraria BENsLEYAE Burl. Bull. Torrey Club 34: 87. 1907. 
[As Lactarius] 
Pileus fleshy, firm, nearly flat with margin inrolled, papillate, 
when older depressed in the center but the margin recurved, 
(362), and finally with snuff-brown (303) toward the margin, the 
center remaining nearly black, dry, surface covered with a dense, 
minute, short, rather stiff pubescence, 2-15 mm. broad; gills 
whitish, some forking near the stem, close, slightly decurrent, I 
mm. wide or equal to the thickness of the pileus, stem somewhat 
