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LACTARIAE ОЕ THE UNITED STATES 85 
3-7 cm. long, 6-12 mm. thick; flesh white, changing to reddish 
or salmon where exposed to the air; spores yellow, mostly globu- 
lar, echinulate, uniguttulate, 6.5-10/4; latex white, rarely chang- 
ing color except where in contact with the flesh, where it becomes 
salmon-pink, mild, then acrid. ; 
Has.: In deciduous or mixed woods. July to September. 
Distris.: New York, Peck, Earle, Peck & Earle (Long Island) ; 
‘Maine, White; Vermont, Burlingham 41, 1906; Pennsylvania, 
Murrill, Herbst ; North Carolina, Burlingham 80, 1907. It has 
also been reported from Alabama by Atkinson. 
Плозт.: Atkinson, Stud. Am. Fungi, f. 117; Bern. Champ. 
Roch. pi. 38. f. 3; Britz. Lact. f. 33", 40; Bull. Herb. Fr. ai, 
567. f. 3; Cooke, Br. Fungi, ai 996; Gillet, Champ. Fr. ai. 
165 [384]; Harzer, Pilze, p/. 19; Krombh. Abbild. a 14. f. 
10-12 (f. 12 very poor); Noulet & Dass. Champ. a 18. f. В.; 
Pat. Tab. Analyt. Fung. pl. 322. 
Exsic.: Herpell, Sammlung práparirter Hutpilze 73. 
DISTINGUISHING FIELD-MARKS: For the most part, the pileus 
is snuff-brown or coffee-and-milk-colored, and is dry, glabrous or 
pruinose, and very smooth ; the gills become yellow and the spores 
are yellow, while wounds of the plant become salmon-pink or red- 
dish. Тһе species varies greatly in size, color, closeness of the 
gills, and in the readiness with which the latex or wounds change 
color. 
In the * Pink Beds," North Carolina, I found small forms 
growing in moss and shade, having the pileus nearly white, or 
stone-colored in the center, and from 3-4 cm. broad, and the gills 
white, close, and about 2 mm. broad, while the latex as well as 
the wounds became salmon-pink, but since intergrading forms 
occur it does not seem possible to separate it from the species. 
At the other extreme, in sandy soil, large normally colored forms 
occurred, having distant gills up to 10 mm. broad, the wounds 
changing slowly but the latex unchanging except where in contact 
with the flesh. Аза rule, the paler the plant, the more quickly the 
wounds become salmon and the more likely the milk is to change 
color. The small white form described above, ло. 60, 1907, and 
the distant-gilled form, по. 69, 1907, аге in the herbarium of the 
N. Y. Botanical Garden. 
