Part 4, 1915] AGARICACEAE 215 
gin striate-tuberculate: context white or whitish, acrid or slowly acrid and unpleasant, 
the odor none when fresh; lamellae white, staining umber where bruised, mostly equal, many 
forking next to the stipe, narrow at the inner ends, adnate, close; stipe equal or abruptly 
contracted at the apex, sometimes tapering downward, white stained with yellowish-brown, 
especially at the base, becoming more discolored in drying, firm, spongy, 2-4 cm. long, 1.3-1.7 
em. thick: spores white, creamy-white on white paper, globose, nearly smooth, 7 » in diameter. 
Type LOCALITY: Ulster County, New York. 
Hasirat: In woods, especially under spruce trees. 
DISTRIBUTION: Vermont west to the Pacific coast. 
ILLUSTRATIONS: Ann. Rep. N. Y. State Mus. 53: pl. C, f. 1-5. 
37. Russula pulverulenta Peck, Bull. Torrey Club 29: 70. 1902. 
Pileus rather thin, convex, soon centrally depressed or subumbilicate, 3-8 em. broad; 
surface ochroleucous, then grayish-brown, pulverulent with pale-yellow, mealy scales or 
patches, viscid when wet, with separable pellicle; margin even at first, striate when mature: 
context white, the taste mild and somewhat disagyeeable, the odor somewhat fetid; lamellae 
white, equal, not infrequently forking next to the stipe, venose-connected, adnate, close; 
stipe white at the apex, elsewhere thickly beset with yellow dots or granules, subequal, spongy- 
stuffed, becoming hollow, 3-9 em. long, 0.8-2 cm. thick: spores white, globose, about 8 » in 
diameter. 
TYPE Locality: Michigan. 
Hasirat: In mixed woods. 
DISTRIBUTION: Vermont and Michigan. 
38. Russula ventricosipes Peck, Bull. Torrey Club 29: 70. 1902. 
Pileus thin, broadly convex, nearly plane or slightly depressed in the center, 5-7 cm. 
broad; surface varying in color from tawny-yellow to pale-alutaceous, becoming umber in 
drying, glabrous, viscid when wet; margin inrolled and even, thin, striate: context white; 
lamellae white or whitish, becoming umber in drying, equal, forking next to the stipe, slightly - 
sinuate, adnate, narrow, close, thin; stipe whitish above, reddish toward the pointed base, 
ventricose, firm, solid or subspongy within, nearly glabrous, 5—7 cm. long, 2.5 cm. thick: spores 
broadly elliptic, nearly smooth, 6-8 » in diameter. 
TypPE Locatity: South Yarmouth, Massachusetts.: 
Hasrrat: Sandy soil under or near pine trees. 
DristRIsution: Known only from the type locality. 
VIII. Bifidae. Pileus rather firm, broad; pellicle separable on the margin only; surface 
green or reddish-purple variegated more or less with green, viscid when wet, glabrous or 
pruinose; margin even, thin: context white, unchanging, mild or acrid, without special odor; 
lamellae white, dichotomously forked, some short ones present, narrowed toward each end: 
spores white. 
39. Russula bifida (Bull.) Schrét. Krypt.-Fl. Schles. 31: 549. 1889. 
Agaricus bifidus Bull. Herb. Fr. ol. 26. a 
Amanita furcata Lam. Encyc. 1: 106. 1783 
Agaricus furcatus J. F. Gmel. Syst. Nat. 2: 1410. 1791. 
Russula furcata Fries, Epicr. Myc. 352. 1838. 
Pileus convex, becoming plane or concave, 5~10 cm. broad; surface een: not uniform 
in color, tinged with fulvous, yellow, umber, or black in the center, the pellicle separable on the 
margin only, smooth, frosted with a slight silkiness or appearing as though moldy or mealy; 
margin even, acute, inflexed: context white, mild or insipid and nauseous, sometimes bitter 
with age; lamellae white, equal, forking twice and sometimes three times, adnate to decurrent, 
subdistant, rather broad; stipe white, solid, even, spongy or hollow with age, tapering down- 
ward, 3-7 cm. long, 1-1.6 cm. thick: spores white, globose, echinulate, 7-8 » in diameter. 
TYPE LOCALITY: France. 
Hasrrat: In woods. 
DISTRIBUTION: New York; also in Europe. 
ILLUSTRATIONS: Barla, Champ. Nice pl. 16, f. 1-9; Bull. Herb. Fr. pl. 26; Cooke, Brit. Fungi 
pl. 1036; Richon & Roze, Atl. Champ. #1. 41, f. 1-3. 
