The Mycologic #lora of the Miami Valley, O. 175 
stipe 3 in. long, and + of an inch or less in thickness. Smaller than 
C. atramentarius, thinner, at first more nearly equal; the pileus 
brownish-gray; the disk reddish, not sprinkled with sparkling atoms, 
but at first somewhat pruinose. 
6. C. instenis, Peck.—Pileus campanulate, thin, sulcate-striate to 
the disk, grayish fawn-color, the smooth disk sometimes cracking into 
small areas or scales. Stipe hollow, slightly fibrillose, striate, white. 
Lamelle ascending crowded. Spores elliptic, rough, .010.007 mm. 
About the roots of trees in woods. Solitary (?) pileus 2-4 in. in 
diameter; stipe 45 in. long, and tin. thick. This species is remark- 
able for its rough spores. In size and general appearance it bears 
some resemblance to C’. atramentarius. 
B. Stipe not annulate. 
c. Pileus floccose, tomentose or villous. 
7. C. niveus, Pers.—Pileus somewhat membranaceous, oval then 
campanulate and explanate, covered with a dense, white, floccose-scaly, 
somewhat persistent villosity. Stipe hollow, equal, villous, white. 
Lamelle somewhat adnate, narrow, becoming black. Spores oval, 
.OL2.0L0 mm. 
Common on dung-heaps, especially of horse-manure. VPileus 4-1 in- 
in diameter, stipe 3-5 in. in height. Margin of the pileus very thin 
and delicate, at length rolled back. Clearly distinguished by the ad- 
nate lamella. 
d. Pileus strewn with sparkling atoms. 
8. C. micacgeus, Bull.—Pileus somewhat membranaceous, oval then 
campanulate, somewhat repand, striate, tawny-ferruginous, discoid, 
strewn with glittering fugacious granules, soon naked, rimose-sulcate. 
Stipe hollow, silky-even, whitish. Lamelle attached, lanceolate, at 
first whitish, then brown to the middle, at length becoming black. 
Spores oblique, apiculate, .0076.0066 mm. 
Upon the ground and about old stumps; very common from early 
spring till late in autumn, and even in the mild moist weather of winter, 
Pileus 3-1 in. in diameter, expanding to 1} 2 in.; stipe 2-5 in. high and 
4 of an inch or less in thickness. Pileus often more or less irregu- 
lar from the densely crowded mode of growth, the stipes from mutual 
pressure often angulate. 
9. C. semitanatus, Peck.—Pileus somewhat membranaceous, broadly 
conical, then expanded and strongly revolute, farinaceo-atomaceous, 
