108 Cincinnati Society of Natural History. 
On rotten trunks of trees, sticks, etc. Solitary or ceespitose; pileus 
2-3 in. in diameter, stipe 1-14 in. high; the veil fugitive consisting of 
purple and yellow flocci. The pileus when young is-purple, it then 
changes to buff or light yellow on the margin, with the umbo purple or 
brownish-yellew. This very beautiful Agaric was first found by Mr. 
Lea, and named by his friend and correspondent, Rev. M. J. Berkeley, 
of England. 
SUBGENUS XX.—PLUTEOoLUS, Fr. 
Pileus conic or campanulate, then expanded ; the margin at first 
straight and appressed to the stipe. Stipe somewhat cartilaginous. 
Lamelle rotundate-free. 
114. A. mucipoLENSs, Berk.—Scented. Pileus a little fleshy, lobed, 
glabrous, viscid, shining, sooty. Stipe fibrillose. Lamellee free. Spores 
dull-ferruginous, somewhat cymbiform. 
“On a rotten trunk. Cincinnati, April 21, 1842.”—Lea. Pileus 2-3 
in. broad, of a dull smoky brown; stipe 2 in. or more in height, 
clothed with brownish fibres. Smell like that of decayed cheese. This 
plant is one of Mr. Lea’s new species, It is very interesting as being 
the only representative thus far known of this subgenus in North 
America. 
SupcEnus XXI.—Navcorta, Fr. 
Pileus more or less flesby, convexo-plane; the margin at first in- 
flexed. Stipe cartilaginous. Lamelle free or attached, but not de- 
current. 
115, A. vervacti, Fr.—Pileus fleshy, convexo-plane or umbonate, - 
even, glabrous, viscid, shining when dry. Stipe stuffed then hollow, 
tapering upward, glabrous, rigid, whitish. Lamelle adnate with a 
decurrent tooth, cluse, afterward ventricose, pallid then ferruginous- 
brown. Spores brown-ferraginous. . 
In meadows, pastures, etc. Pileus luteous, obtuse; stipe short, 
about.1 in. long, rather thick, tapering sometimes upward and some- 
times downward. Flesh white. 
116. A. sEMioRBICULARIS, Fr.—Pileus a little fleshy, hemispheric, 
expanded, even, glabrous, somewhat viscid, at length rivulose. Stipe 
slender, tough, almost straight, pale ferruginous, shining, with a free 
tubular pith. Lamelle adnate, very broad, close, pallid then ferrugin- 
ous. Spores brown-ferruginous, elliptic, very large, .013X.008 mm. 
