The Mycologic Flora of the Miami Valley, 0. 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 reldish, not sprinkled with sparkling atoms, 

 but at first somewhat pruinose. 



6. C. iNSiGNis, 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 flbrillose, striate, white. 

 Laraellse ascending crowded. Spores elliptic, rough, .OlOX-007 mm. 



About the roots of trees in woods. Solitary (?) pileus 2-4 in. in 

 diameter; stipe 4 5 in. long, and :^ in. thick. This species is remark- 

 able for its rough spores. In size and general appearance it bears 

 some resemblance to 0. atramentarius. 



B. Stipe not annulate. 



c. Pileus Uoccose, tomentose or villous. 



7. C. NivEUS, Pers. — Pileus somewhat membranaceous, oval then 

 campanulate and explauate, covered with a dense, white, floccose-scaly, 

 somewhat persistent villosit3^ Stipe hollow, equal, villous, white. 

 Lamellae somewhat adnate, narrow, becoming black. Spores oval, 

 .012X.0L0 mm. 



Common on dung-heaps, especially of horse-manure. Pileus |-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 lamellae. 



d. Pileus strewn loith sparkling atoms. 



8. C. MiCACEUs, Bull. — Pileus somewhat membranaceous, oval then 

 campanulate, somewhat repand, striate, tawny-ferrugiuous, discoid, 

 strewn with glittering fugacious. granules, soon naked, rimose-sulcate. 

 Stipe hollow, silky-even, whitish. Laraellse attached, lanceolate, at 

 first whitish, then brown to the middle, at length becoming black- 

 Spores oblique, apiculate, .0076X-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 fl in. in diameter, expanding to 1^ 2 in.; stipe 2-5 in. high and 

 ^ 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. SEMiLANATUS, Peck. — Pileus somewhat membranaceous, broadly 

 conical, then expanded an I strongly revolute, farinaceo-atomaceous, 



