The Mycologic Flora of the Miami Valley, O. 117 
the apex. Lamelle adnate, broad, variegated with gray and sooty. 
Spores black. 
On dung and on manured land, in spring and summer. Pileus 1-2 
in. broad, stipe 2-4 in. long. Pileus when moist commonly sooty- 
canescent, when dry argillaceous-canescent. 
SUBGENUS XX X.—PSATHYRELLA. 
Pileus membranaceous, striate, the margin not exceeding the 
lamelle. Lamelle uniformly black-sooty, not variegated. 
a. Stipe straight, glabrous. 
144. A. Gracitis, Fr.—Pileus somewhat membranaceous, conic, 
striatulate, hygrophanous, when dry not striate. Stipe slender, 
straight, naked, pallid. Lamellze broadly adnate, rather distant, cin- 
ereous-blackish; the edge obsoletely rose-color. Spores black, elliptic. 
very large, .014.008 mm. 
In low grounds along fence-rows. Pileus 2-14 in. broad, stipe 3-5 
in. high. Pileus at first livid or brownish, then changing to ochra- 
ceous, alutaceous, pinkish or whitish. : 
6b. Stipe flecuous, pruinate at the apex. 
145, A. atomatus, Fr.—Pileus somewhat membranaceous, campanu- 
late, obtuse, striatulate, hygrophanous, when dry rugulose, entire, 
furfuraceous with shining atoms. Stipe lax, fragile, white; the apex 
white-furfuraceous. Lamellz adnate, broad, cinereous-blackish. Spores 
black, elliptic, large .011X<.008 mm, 
Among chips and rotten wood in woods. Pileus 3-1 in. in diameter, 
stipe 2-3 in. long. Pileus at length plano-expanded, ochraceous in- 
clining to pale reddish, at length cream-colored or nearly white. Stipe 
somewhat rooting, more or less cottony at the base. 
146. A, DIssEMINATUS, Pers.—Pileus membranaceous, ovate-campanu- 
late, furfuraceous, afterward naked, sulcate-plicate, entire, changing 
color. Stipe lax, somewhat flexuous, fragile, furfuraceous then 
glabrous. Lamelle adnate, broadly linear, white-cinereous, then chang- 
ing to black. Spores black, elliptic, .0076.0051 mm. 
About trunks of trees and on the ground, in woods. Gregarious and 
czespitose, sometimes in countless numbers. A very small Agaric ; 
pileus about one fourth of an inch in breadth, the stipe about 1 inch 
long. Pileus yellowish or ochraceous, at length cinereous or whitish: 
sometimes with a pearly tint toward the margin. 
[T0 BE CONTINUED. | 
