Part 4, 1915] AGARICACEAE 205 
XXIV. PURPURINAE 
Pileus old-blood-red to reddish-old-rose and rose-pink. 
Stipe deep-red, sometimes white at the base and apex; lamellae usually 
crenulate on the edges; cystidia numerous. 103. R. purpurina. 
Stipe white or stained more or less with red; lamellae even on the edges. 104. R. uncialis. 
Pileus dark-violet, purple, or purplish-red, blackish-livid toward the center. 105. R. sericeonitens. 
Pileus varying from Vandyke-brown to brownish-drab or burnt-umber. 106. R. brunneola. 
Pileus whitish or tinged with pink, especially on the margin. 107. R. albella. 
XXV. FRAGILES 
Pileus red, nearly uniformly colored. 
Surface smooth. 
Lamellae adnexed, close; context white next to the cuticle. 108. R. subfragilis: 
Lamellae free, subdistant; context red next to the cuticle. 109. R. emetica. 
Surface rugose-tuberculate, 110. R. rugulosa. 
Pileus containing red or violet, not uniformly colored, nearly black on the 
is 
Stipe white, unchanging. 
Margin of pileus dull- dark-red, even. 112. R. nigrodisca. 
Margin of pileus incarnate to Indian-lake, greenish toward the 
disk, striate. 113. R. fallax. 
Stipe staining sordid-violaceous or dull-red where bruised; margin of 
pileus violet-colored. 114. R. parvula. 
Pileus coppery-red intermingled with pale-yellow or ocher. lil. R. bicolor. 
Pileus white or whitish. 115. R. crenulata. 
I. Compactae. Pileus without a pellicle, dry or viscid, glabrous; margin involute at 
first, even: context firm and compact as in the Piperatae group of the Lactariae, frequently 
changing color where wounded or with age, mild or tardily acrid in taste; lameilae unequal, 
shorter alternating with the longer, seldom forking, in many species becoming darker colored 
with age or in drying or where wounded; spores white. 
1. Russula compacta Frost & Peck; Peck, Ann. Rep. N. Y. State 
Mus. 32: 32. 1880. 
Pileus fleshy, broadly convex, sometimes umbilicate, becoming centrally depressed or 
infundibuliform, 7.5-15 cm. broad; surface white or whitish, becoming rusty-ochraceous; 
dry or subviscid after heavy rains, unpolished, glabrous; margin even: context compact, 
white, mild or slightly and tardily acrid, the odor in drying strong and disagreeable; lamellae 
white, becoming reddish-brown where wounded and smoky-brown in drying, unequal, occa- 
sionally forked, rather close to subdistant, adnate or slightly rounded behind; stipe white, but 
becoming stained with reddish-brown in handling or where wounded, and sometimes changing 
color like the pileus, equal or nearly so, solid, 3.5—6.5 cm. long, 1.2-2.5 cm. thick: spores white, 
globose to subglobose, nearly smooth, 7 » in diameter. 
TYPE LOCALITY: Sandlake, New York. 
Hasitat: In pine woods or mixed woods. 
DisTRIBUTION: New England, New York, and New Jersey. 
ILLUSTRATIONS: Bull. N. Y. State Mus. 116: pl. 109, f. 1-4 
2. Russula magnifica Peck, Bull. N. Y. State Mus. 67: 24. 1903. 
Pileus convex-umbilicate, becoming centrally depressed or infundibuliform, up to 25 cm. 
broad; surface whitish, becoming pale-rusty-ochraceous, viscid when young or moist, glabrous, 
but sometimes slightly rimose-squamose in the center; margin even, involute, then upturned: 
context firm, white or whitish, the odor and taste alkaline, strong and disagreeable, odor 
persisting in drying; lamellae whitish with a faint pinkish tint, becoming reddish-brown where 
wounded, and a dark-reddish-brown on drying, unequal, adnate or slightly decurrent, narrow, 
close; stipe white or whitish, staining brownish-flesh-color, equal or tapering downward, 
solid, becoming spongy or even hollow, 5-12 cm. long, 1.5-3.5 cm. thick: spores white, broadly 
elliptic, nearly smooth, slightly roughened at maturity, 6-7 X 8-9 nu. 
TYPE Loca.ity: Port Jefferson, Suffolk County, New York. 
Hasirat: Among fallen leaves in sandy woods under Kalmia. 
DIstRIBUTION: Known only from the type locality. 
ILLUSTRATIONS: Bull. N. Y. State Mus. 67: pl. N, f. 5-10. 
