104 LACTARIAE OF THE UNITED STATES 
DISTINGUISHING FIELD-MARKS: This species differs from 2. suó- 
dulcis, which it most closely resembles, by the richer buff color and 
by the change in the color of the latex or bruised portions of the 
gills and flesh. The type specimens are in the herbarium of the 
N. Y. Botanical Garden. 
69. .LACTARIA MUTABILIS Peck, Ann. Rep. N. Y. St. Mus. 43: 
1800. [As Lactarius | 
Pileus fleshy, thin, convex, then nearly plane, reddish-brown, 
the disk and zones darker, zonate when moist, azonate when dry, 
moist but not viscid, glabrous, 5-10 cm. broad; gills whitish, 
becoming tinted with yellow in the mature plant, close, adnate, 
broader than the thickness of the pileus; stem of the same color 
as the pileus, equal or slightly tapering upwards, glabrous, stuffed, 
2.5-5 cm. long, 6-10 mm. thick; flesh colored like the surface, 
odorless; spores subglobose, rough, 7.5 м; latex white, unchang- 
ing, mild. 
Нав.: “ Low damp places.” June and September. 
Disrris.: New York, Peck. 
Плозт.: Peck, Ann. Rep. N. Y. St. Mus. 43: M. т. f. 1-4 
DISTINGUISHING FIELD-MARKS: The large size, the reddish- 
brown color, and the zonate condition of the moist pileus. Ace p 
cording to Peck, the zones are made up of ** more or less confluent 
spots." Тһе dried specimens resemble Z. suddulcis in color, but 
they are much larger. E 
The type specimens are in the herbarium of the N. Y. State 
Museum at Albany. Ihave not seen this plant living and the 
above description is arranged from the original description after 
an examination of the type specimens. 
70. ТАСТАВТА PARVA Peck, Ann. Кер. N. Y. St. Mus. 29: 44 
1878. [Аз Lactarius.|— Hennings, in Eng. & Prantl, S 
Nat. Pflanzenfam. 1!**: 216. 1898 
_ Pileus fleshy, thin, broadly convex or nearly plane, then 
slightly depressed in the center, sometimes with a small umbo, 
first umber tinged with lilac, fading, azonate, dry, glabrous, 1.5-3 
cm. broad, margin inrolled and pruinose at first, then spreading, 3 
even ; gills whitish or yellowish, becoming pale dull-green wher | 
injured, and at length brownish, some forking near the stem, close, 
adnate to slightly decurrent, 2-4 mm. broad; stem paler than tie 
pileus, equal or slightly tapering upwards, glabrous or merely 
