30 BULLETIN N. ¥. STATE MUSEUM. 
Synopsis of the Species. 
1 Hymenium clearly lamellate. 2. 
2 Pileus white, stem present. P. simulans, 
2 Pileus colored. Be. 
3 Stem glabrous. P. involutus. 
3 Stem densely hairy. P. atrotomentosus. 
3 Stem none. P. panuoides. 
1 Hymenium wholly porous. P. porosus. 
Paxillus simulans x. sp. 
Simulating Paxillus. 
Pileus broadly convex, expanded or subinfundibuliform, compact, 
subglabrous, even or somewhat scabrous-pustulate, whzte or whitish, 
the involute margin often tomentose-hairy, flesh white ; lamelle 
close, forked, crisped near the stem, adnate or decurrent, white, then 
ochraceous-yellow tinged with salmon color ; stem central, short, firm, 
equal, stuffed or hollow, pubescent, white ; spores pale ochraceous- 
yellow, subglobose or broadly elliptical, .0002 to .0003 in. long, .0002 
in. broad. 
Plant 1 to 3 in. high, pileus 2 to 4 in. broad, stem 6 to 12 lines 
thick. 
In thin woods. Sandlake. July. Rare. 
A large species externally resembling Lactarius vellereus, and per- 
haps hitherto confused with it, but easily distinguished from it py the 
absence of a milky juice and by the lamellz which are crisped near 
the base and which soon assume a peculiar salmon-yellow hue, which 
also appears in the spores when collected on white paper. This 
change of color begins in the crisped portion near the stem and gradu- 
ally advances toward the outer extremity. In the dried specimens the 
lamellze are ochraceous-brown and they have the edge more or less 
beaded with white granules. They are often forked near the outer 
extremity as well as toward the inner. The length of the stem some- 
times scarcely exceeds its breadth. In but a single instance was it 
eccentric, and in that case the pileus was lobed and irregular. The 
surface of the pileus is sometimes roughened with minute pustules or 
papille and sometimes has a pitted appearance. Rarely the margin 
is obscurely zonate. The taste is bitterish and unpleasant, and some 
times the plant emits a subacid odor. It is a singular species. 
Paxillus involutus 7. 
Involute Paxillus. 
Pileus compact, convex or expanded, sometimes centrally de- 
pressed, glabrous, viscid when moist, varying in color from grayish 
