Part 4, 1915] AGARICACKAE 223 
becoming cream-colored to maize-yellow, mostly equal, some forking next to the stipe, rounded 
at the outer ends, narrow at the inner, close, thin; stipe white, firm, solid, equal or tapering 
upward, 4-5 cm. long, 1-1.5 cm. thick: spores pitchpin, elliptic, very finely echinulate, 
5X 7m. 
TYPE LOCALITY: France. P 
Hasirat: In grass in thin woods of birch, maple, beech, spruce, or fir. 
DISTRIBUTION: Vermont; also in Europe. 
ILLUSTRATIONS: Bres. Funghi Mang. 71. 77; Gill. Champ. Fr. $1. 191 (616); Ricken, Blatterp. 
Deutschl. 1. 18, f. 1. 
67. Russula subolivascens Burlingham. 
Agaricus olivascens Secr. Mycogr. Suisse 1: 493. 1833. Not A. olivascens Batsch, 1783. 
Russula olivascens Fries, Epicr. Myc. 361. 1838. 
Pileus convex to plane, umbilicate, 5-8 cm. broad; surface olivaceous, pale-olivaceous, or 
reseda-green, becoming yellow on the disk, without pinkish or reddish tints, somewhat viscid 
when moist, with pellicle separable on the margin, glabrous; margin even: context white, 
rather thick, mild in taste; lamellae white at first, then yellow, deep-yellow in drying, subequal, 
some forking next to the stipe, narrow behind, broad in front, adnate, crowdéd; stipe white, 
firm, spongy within, smooth, 4~-7 cm. long, 1.5-2 cm. thick: spores pitchpin, broadly elliptic, 
slightly pointed at on end, echinulate, 7 X 8.75 u. 
TYPE LocaLity: Europe. 
HasitaT: In leafy forests. 
DISTRIBUTION: Long Island, Vermont, and Wyoming; also in Europe. 
ILLUSTRATIONS: Cooke, Brit. Fungi pl. 1035; Fries, Ic. Hymen. pl. 172; Ricken, Blatterp. Deutschl. 
pl. 18, f. 5. 
68. Russula aeruginea Lindbl.; Fries, Monog. Hymen. Suec. 2: 198. 
1863. 
Pileus fleshy, from convex to plane, slightly depressed in the center, 5-8 cm. broad; 
surface aerugineous-green, leaden-gray, or paler, the center sometimes.tinged with umber, viscid 
when wet, soon dry, dull and sometimes pruinose when dry; margin slightly striate-tuberculate, 
thin: context white, the taste mild; lamellae white, cream-colored in age or in drying, equal, 
sometimes forking next to the stipe, close to subdistant, narrow at the inner ends, rounded 
at the outer; stipe white, nearly equal, glabrous, firm, then spongy, 4-5 cm. long, 1-1.2 em. 
thick: spores whitish or tinged with cream-color, subglobose, echinulate, 7-8 u in diameter. 
TYPE LocALIty: Sweden. 
Hasitar: In coniferous or mixed woods. 
DiIstRIBUTION: New England to Michigan; also in Europe. 
ILLUSTRATION: Fries, Ic. Hymen. pl. 173, f. 3. 
69. Russula graminicolor Quél. Fl. Myc. Fr. 347. 1888. 
Pileus convex, becoming a little concave as it expands, thin, up to 7 cm. broad; surface 
grass-green, russet-green with age, bistre in the center, viscid when wet, with separable pellicle, 
glabrous; margin striate and brighter colored: context white, fragile, mild, inodorous; lamellae 
cream-white, deeper colored with age or in drying, often joined at the base, adnate; stipe 
white, then sordid-yellowish-brown, glabrous, furrowed, firm, spongy: spores citrine or pitch- 
pin, ocellate, echinulate, elliptic, 7 X 8.7 u. 
TYPE LOCALITY: Europe. 
Hasirat: Under birch trees. 
DISTRIBUTION: Vermont; also in Europe. 
ILLUSTRATION: Ricken, Blatterp. Deutschl. fl. 16, f. 2. 
XVII. Fingibiles. Pileus with pellicle somewhat separable; surface yellowish or white 
mixed with yellow, viscid when wet, glabrous; margin becoming striate: context white, un- 
changing, mild, without special odor; lamellae equal, some forked next to the stipe: spores 
white. 
