210 NORTH AMERICAN FLORA [VOLUME 9 
Type LocALity: Europe. 
Hasitat: Oak, maple, or mixed woods. 
DISTRIBUTION: Maine to Virginia and west to Michigan and Ohio; also in Europe. 
ILLusrrations: Atk. Stud. Am. Fungi #1. 36, f. 1; Barla, Champ. Nice, $l. 16, f. 10-12; Bres. 
Funghi Mang. pl. 69; Cooke, Brit. Fungi pl. 1039; Cordier, Champ. Fr. pl. 31; Gill. Champ. Fr. 
pl. 175; Ricken, Blatterp. Deutschl. pl. 16, f. 3; Ann. Rep. N. Y. State Mus. 48: pl. 31; Hussey, Ill. 
Brit. Myc. pl. 11; Vitt. Deser. Funghi Mang. #l. 31. 
Exsiccati: Cavara, Fungi Longob. 104. 
19. Russula viridella Peck, Bull. N. Y. State Mus. 105: 41. 1906. 
Pileus subglobose or very convex, becoming nearly plane or centrally depressed, 5-10 cm. 
broad; surface pale-grayish-green, paler or subochraceous in the center, dry, soon minutely 
squamulose or furfuraceous, except in the center; margin even: context white, acrid; lamellae 
white, a few short ones present, some forked, thin, narrow, close; stipe white, equal or nearly 
so, even, solid or spongy within, 5-7.5 cm. long, 1-1.6 cm. thick: spores white, tinged with 
yellow, globose to subglobose, 8 » or less in diameter: cystidia subfusiform, 80 X 16 u. 
TYPE LocaLity: Horicon, Wayne County, New York. 
Hapsirat: Under hemlock trees. 
DIstrRrButIon: Known only from the type locality. 
ILLUSTRATIONS: Bull. N. Y. State Mus. 105: pl. 100, f. 1-7. 
20. Russula modesta Peck, Bull. N. Y. State Mus. 116: 78. 1907. 
Pileus firm but thin and flexible, broadly convex, becoming nearly plane or depressed in 
the center, 2.5-6.5 cm. broad; surface greenish-gray, dry, minutely pruinose-tomentose, 
noticeably so under a lens; margin even or obscurely striate: context white, taste mild; 
lamellae white, becoming cream-colored or darker in drying, a few short, many forked behind, 
venose-connected, narrowed toward the stipe, adnate or slightly decurrent, close; stipe white, 
nearly equal, solid, glabrous, 2.5 to nearly 4 cm. long, wp to 1.2 em. thick: spores maize-yellow, 
subglobose, nearly smooth, 5-6 X 7 u. 
TYPE LocaLity: Albany County, New York. 
Hasitat: Woods. 
DiIstTRIBUTION: New York and Vermont. 
IV. Subvelutinae. Pileus with the pellicle separable on the margin, usually dry, but 
sometimes slightly viscid when wet, velvety-pruinose from the first, some shade of red, violet, 
or yellow; margin even; context white, unchanging, mild or tardily acrid; lamellae equal, 
some forking next to the stipe, narrow at the inner ends, rounded at the outer: spores yellow. 
21. Russula subvelutina Peck, Bull. Torrey Club 33: 215. 1906. 
Pileus fleshy, firm, convex or slightly depressed in the center, 5-11 cm. broad; surface 
dark-red or crimson, duil-carmine-lake to Indian-lake, sometimes darker in the center, dry, 
minutely pubescent or velvety, not noticeably so in the dried state except under a lens, cuticle 
adnate; margin even: context white, the taste sweet; lamellae white, becoming cream-yellow, 
the edges in the dried state grayish, sometimes forked next to the stipe, venose-connected, 
moderately close, adnate; stipe white, tinged more or less with red, equal or tapering down- 
ward, unpolished, stuffed or spongy within, 5-10 cm. long, 1-1.5 cm. thick: spores pale-yellow, 
subglobose, nearly smooth, 7-10 » in diameter. 
TYPE LOCALITY: St. Louis, Missouri. 
Hastirat: Woods. 
DISTRIBUTION: Vermont to North Carolina, and west to Missouri. 
22. Russula Mariae Peck, Ann. Rep. N. Y. State Mus. 24:74. 1872. 
Pileus convex, becoming plane or depressed in the center, up to 7 cm. broad; surface 
vinous-purple to slate-violet when growing in the open, cream-colored to maize-yellow tinged 
more or less with slate-violet when in the shade or covered with leaves, dry, pruinose or minutely 
granular or tomentose; margin even, sometimes becoming slightly striate-tuberculate when 
mature, incurved to the stipe when young, then spreading: context white, becoming sticky 
where cut or handled, the taste mild, odor where broken or bruised faint but decided: lamellae 
