Part 3, 1910] AGARICACEAE 177 
4. Lactaria vellerea Fries, Epicr. Myc. 340. 1838. 
Agaricus vellereus Fries, Syst. Myce. 1: 76. 1821. 
Pileus fleshy, thick, convex-umbilicate, at length extending, depressed in the center, 
6-11 cm. broad ; surface whitish, tinged in places with grayish or yellowish, dry, minutely 
tomentose ; margin inrolled then spreading : context firm, white, staining yellowish, pos- 
sibly poisonous ; latex white, unchanging, or if creamy soon becoming white again, acrid; 
lamellae whitish, becoming cream-colored or yellowish, changing to brownish where in- 
jured, many forking near the stem, interveined, shorter lamellae often joining with longer, 
distant, appearing more so with age or in larger specimens, adnate to slightly decurrent, 
2-5 mm. broad ; stipe whitish, tinged in places with yellow, equal.or rounded at the base, 
pruinose-velvety, 3-4 cm. long, 12-18 mm. thick: spores white, globose to ovate or elliptic, 
with only a few scattering blunt spines, uniguttulate, 5-6 & 8x. 
TYPE LOCALITY: Sweden. 
HaBitaT: Open deciduous woods. 
DISTRIBUTION: Eastern United States from Maine to Alabama; also in Europe. 
ILLUSTRATIONS: Barla, Champ. Nice p/. 22, f. 6-8; Bres. Funghi Mang. £1.67; Bull. Herb. 
Fr. pl. 538, 7. G, H, N; Cooke, Brit. Fungi p/. 980 ; Gill. Champ. Fr. £1. 153 (400) ; Hussey, Il. 
Brit. Myc. 1: pi. 63; Krombh. Abbild. pl. 57, f, 10-B ; Lanzi, Funghi Mang. //. 54, J. 1; Sow. 
Engl. Fungi f/, 104 (as Agaricus Listert); Bull. Conn. Geol. Nat. Hist. Surv. 3: pl. 9 
ExsiccaTI: Burl. Lact. N. Am. 3; Rav. Fungi Car. 2: 5, p. £.; Roum. Fungi Gall. 3829. 
5. Lactaria subvellerea Peck, Bull. Torrey Club 25: 369. 1898. 
Pileus fleshy, convex, soon umbilicate, at length nearly infundibuliform, 7.5-15 cm. 
broad; surface white, becoming tinged. or spotted with yellowish, and when dried cinna- 
mon-colored, azonate, dry, covered with velvet-like tomentum; margin at first and for 
some time involute, at length spreading: context thin, amber-white, odor faint; latex pale 
cream-colored or whitish, becoming yellowish in drying, very acrid, abundant; lamellae 
white to pale cream-colored, staining amber-white where the latex dries, often forking, 
adnate or slightly decurrent, narrow ; stipe white, tapering slightly toward the base, dry, 
velvety-pubescent, firm, 1.8-2.8 cm. long, 1.2-2.5 cm. thick: spores subglobose, smooth, 
6-6.5 XK 6.5-7.5 #. 
TYPE LOCALITY: Alabama. 
HapitTat: On dry ground, mixed woods, oaks and chestnuts predominating. 
DISTRIBUTION: Alabama and North Carolina. 
6.. Lactaria deceptiva Peck, Ann. Rep. N.Y. State 
Mus. 38: 175. 1884. 
Pileus fleshy, convex-umbilicate, then expanded and centrally depressed or somewhat 
infundibuliform, 5-15 cm. broad; surface white or whitish, dry, glabrous at first, becoming 
torn into fibers and cracked as the pileus matures; margin involute at first and covered 
with a dense soft cottony tomentum which fills in the space between the margin and the 
stem, then spreading or elevated and more or less fibrillose: context firm, white, edible ; 
latex white, unchanging, acrid; lamellae whitish or cream-colored, some forking, rather 
distant, adnate or decurrent, somewhat broad; stipe white, nearly equal, pruinose-pubes- 
cent, solid, 2-8 cm. long, 10-40 mm. thick: spores white, globose to elliptic, echinulate, 
8-9 & 9-12 b. . 
TYPE LOCALITY: New York. 
HasiTaT: On the ground in woods, especially near hemlock trees, rarely in oak-chestnut 
MO aun : Ontario, and Eastern United States from Maine to Alabama. 
ILLUSTRATIONS: Atk. Stud. Am. Fungi “. 120, 121 (as Laciaria ee ; Ann. Rep. N. Y. 
State Mus. 54: pl. 70, f. 7-11, Bull. Conn. Geol. Nat. Hist. Surv. 3: pl. 
EXSICCATI: Burl. Lact. N. Am, ¢; Shear, N. Y. Fungi 79. 
7. Lactaria involuta Soppitt ; Cooke, Handb. Brit. Fungi 
ed. 2. 380. 1883. 
Pilens fleshy, convex, then plane or slightly depressed, 2-5 cm. broad; surface white 
with pale-ochraceous tinge, dry, smooth, glabrous; margin arched, involute, extreme edge 
