Part 3, 1910] AGARICACEKAE 195 
whitish, not discolored by the latex; latex white, unchanging, and not staining the flesh 
or lamellae, acrid; lamellae colored like the pileus, distant, thin, decurrent, 1 cm. or more 
broad; stipe colored like the pileus, nearly equal, rather firm, dry, glabrous, 2.5-5 cm. 
long, 6-12 mm. thick: spores yellow, globose, echinulate, 7.5-10” in diameter. 
TYPE LOCALITY: Pennsylvania. 
HABITAT: In grassy places in open deciduous woods. 
DISTRIBUTION: Pennsylvania, District of Columbia, Virginia, and Missouri. 
58. Lactaria Gerardii Peck, Ann. Rep. N. Y. State 
Mus. 26: 65. 1874. 
Pileus fleshy, convex at first, often with a small umbo, then plane or depressed, up to 
10 cm. broad; surface dark seal-brown, becoming golden-brown or umber, or even paler, 
azonate, dry, velvety, rugose radiately from the center, sometimes becoming cracked near 
the margin; margin even or wavy and irregular, involute, then spreading: context firm, 
white, unchanging, edible; latex white, unchanging, mild, then slightly acrid; Jamellae 
white, then cream-colored, more or less interveined, distant, appearing more so in older 
specimens, decurrent, not very thin, broad; stipe the same color as the pileus, velvety to 
the touch, equal or ventricose, stuffed, then hollow, 2.5-5 cm. long, 4-20 mm. thick: 
spores white, globular, echinulate, 6.5-9 « in diameter. 
TYPE LOCALITY : New York. 
HABITAT: On the ground in woods or open groves. 
DISTRIBUTION: From Vermont and New York as far south as North Carolina. 
ILLUSTRATIONS: Ann. Rep. N. Y. State Mus. 26: p1. 59, f. 12-16; Mem. N. Y. State Mus. 3: 
pl, 53, f. 12-16. 
EXSICCATI: Burl. Lact. N. Am. 38. 
59. Lactaria subtomentosa Berk. & Rav.; Berk. & Curt. Ann. Mag. 
Nat. Hist. JIT. 4: 293. 1859. 
Pileus convex, 5-7.5 cm. broad; surface umber-brown, dry, subtomentose: context 
firm; latex white, becoming yellowish, acrid; lamellae white, distant, decurrent, broad; stipe 
of the same coloras the pileus except at the white base, hollow, 2.5 cm. long, 12 mm. thick. 
TYPE LOCALITY: North Carolina. 
HaBiITaT: On the ground in swamps. 
DISTRIBUTION: North Carolina. 
60. Lactaria salmonea Peck, Bull. Torrey Club 25: 369. 1898. 
Pileus fleshy, thin, convex, soon depressed in the center, otherwise nearly plane, 2.5- 
3.8 cm. broad ; surface white, becoming reddish where bruised, dry, somewhat velvety ; 
margin involute, then spreading, even: context firm, becoming salmon where wounded ; 
latex salmon-colored ; lamellae pallid, becoming darker, brownish in drying, close, adnate 
to decurrent; stipe white, salmon-colored within, nearly equal, occasionally eccentric, 
velvety, solid, about 2.5 cm. long, 3-6 mm. thick: spores subglobose, echinulate, 7.5-9 4 
in diameter. 
TYPE LOCALITY: Alabama. 
HaBITAT: In wet swampy places, usually on naked ground which has been overflowed. 
DISTRIBUTION: Alabatna and Mississippi. 
ExsiccaJ1: Burl. Lact. N. Am. 39. 
XVII. Lactifluae. Pileus broad; margin involute at first, then spreading to uplifted, 
surface some shade of fulvous, dry, glabrous or velvety: context firm, rather thick, in 
some species becoming brown where injured; latex white, unchanging, sweetish or at least 
mild, abundant; lamellae becoming darker and pruinose with age. 
61. Lactaria lactiflua (L.) Burl. Mem. Torrey Club 14: 90. 1908. 
Agaricus lactifluus I,. Sp. Pl. 1172. 1753. 
Agaricus oedematopus Scop. Fl. Carn. ed. 2.2: 453. 1772. 
Agaricus testaceus Alb. & Schw. Consp. Fung. 209. 1805. 
Agaricus volemus Fries, Syst. Myc. 1: 69. 1821. 
Lactaria volema Fries, Epicr. Myc. 344. 1838. 
Pileus fleshy, convex, then nearly plane or slightly depressed, 5-13 cm. broad; surface 
fulvous, buff, or brownish terra-cotta to brownish-orange, sometimes much paler, azonate, 
