112 Cincinnatt Society of Natural History. 
at the base, nearly equal above, rather slender and often gracefully 
curving. The lamellz are at length almost black, like the dark part of 
a bean flower. This is one of the elegant new species of Lea’s Catalogue. 
b. Annulus small, remote. 
127. A. campEstris, Linn.—Pileus fleshy, convexo-plane, floccose- 
silky or scaly. Stipe stuffed, even, white; the annulus in the middle, 
somewhat lacerate. Lamelle free, approximate, ventricose, somewhat 
liquescent, fleshy-brown. Spores brown, nearly elliptic, .008x.006 mm. 
In rich soil of old pastures; some years abundant. Pileus commonly 
2-3 in. broad, stipe 14-24 in. long. This is the ‘“ Common Mushroom,” 
which from the most ancient times has been highly esteemed for food; 
out of it numerous cultivated varieties have arisen. It has a faint odor 
and a pleasant taste; the flesh is firm, thick, white changing more or 
less to a reddish hue when cut or broken. It is the small, round, un- 
developed plants that are eaten. 
128. A. sitvaticus, Scheeff.—Pileus fleshy, thin, campanulate then 
expanded, gibbous, fibrillose and scaly. Stipe hollow, equal, whitish; 
the annulus simple, distant. Lamelle free, close, equally attenuate 
both ways, thin, dry, reddish changing to brown. Spores elliptic, 
.0064.0043 mm. 
In woods. Pileus about 3 in. broad, stipe 3-4 in. long. The pileus 
is a great deal thinner than in the preceding species, more fragile, 
darker, it is at first covered with brown scales which at length scale 
off, leaving at least the disk smooth; the margin is often rimosely in- 
cised. ‘The flesh is white changing a little to reddish. 
SuBGENUS XX VI.—StrRopnHaria, Fr. 
Stipe annulate. Lamellze more or less adnate. 
a. Growing on wood or on the, ground. 
129. ‘A. mrucinosus, Curt.—Pileus fleshy, convexo-plane, somewhat 
umbonate, covered with a bluish-green seceding slime, expallent. 
Stipe hollow, equal, viscid, beneath the annulus scaly or fibrillose, 
tinged with blue, Lamellz adnate, soft, brown changing to purple. 
Spores elliptic, purplish .007>.005 mm. 
Upon the earth and upon trunks of trees in woods. Pileus 1-4 in. 
broad, stipe 2-3 in. high. Gregarious; pileus dull yellow but covered 
with a bluish gluten; above this, but not always, clothed with white 
scales; stipe with various tints of blue, green or yellow, within mottled 
