with a grayish down, soon splitting, radiately plicate, yellowish, disk 
tawny; gills free, few and distant, narrow, hlackish ; stipe 3"-12 11 high, 
filiform, hyaline, becoming glabrous, whitish; spores 7-8 X 5 n- On 
dung, especially on liorse-dung. 
B. Pileus glabrous. 
a. Gills attached to the stipe. — * Stipe downy or pulverulent. 
C. sclerotigenics E. & E. Microscope, 1890 : 129 with fig. Pileus ovoid 
or ovoid-oblong, then campanulate, blackish-brown, apex tinged whitish, 
about 1 cm. high and broad; gills adnexed; spores obliquely elliptical, 8- 
10 X 5~6 stipe 2.5-10 cm. high, slender, subequal, usually straight 
above and more or less flexuous below where it is downy. Springing 
from an irregularly subglobose, rugulose sclerotium, which is black exter¬ 
nally, white inside. On sheep’s dung. Montana. 
* * Stipe glabrous. 
C. congregatus Fr. Ep. 249. Pileus 6"-g" high, cylindrical then cam¬ 
panulate, finally expanded and split at the margin, smooth, viscid, mar¬ 
gin slightly striate, ochraceous; gilts about i" broad, slightly adnexed, 
white, becoming black; stipe i'-i.J' lpng, equal, smooth, hollow, whitish. 
On ground, also in hot-liouses, etc. Densely caespitose. 
C. silvaticus , Pk. Rep. N. Y. St. Mus. Nat. His. 24 : 71. PI. 4, f. 10-14. 
Pileus membranaceous, with a thin fleshy disk, convex, plicate striate on 
margin, dark brown, the depressed striae paler; gills subdistant narrow, 
attached to stipe, brownish; stipe fragile, slender, smooth, hollow, white; 
spores gibbous ovate, 12.5 p. Plant 2' high, pileus, 6"~io" broad, stipe 
.5" thick. On ground in woods. Sept. 
C. angulatus Pk. Rep. N. Y. St. Mus. Nat. His. 26 : 60. Pileus sub- 
membranaceous, hemispherical or convex, plicate-sulcate, disk smooth; 
lamellae subdistant, reaching the stipe, whitish then black; stipe equal, 
smooth, whitish ; spores compressed, angular, subovate 10 X 8 |x. ; plant 
1 '-2 1 high, pileus 6"-12" broad, stipe .5" thick. In woods. 
b. Gills free. 
C. plicatilis Fr. Ep. 252. Pileus 8"-i2 n across, membranaceous, ovate- 
cylindrical, then campanulate becoming plane, margin splitting and revo¬ 
lute, sulcate to the disk, almost glabrous, brown then grayish, the disk 
darker, broad, even, and at length depressed; gills attached to a collar, 
remote, narrow, distant, grayish-black; stipe 2 r -f long, about i n thick, 
equal, white, smooth, hollow; spores 12-14 X 8-10 |x, fugacious. 
C. deliquescens Fr. Ep. 249. Pileus i-S'-f across, ovato-campanulate 
then expanded, flesh rather thick at disk, distantly striate, glabrous, except 
the minutely papillose disk, livid gray or smoky, disk often tinged rufes- 
cent; gills free, at length remote, narrow, gray, then blackish ; stipe 3'- 
4' high, about 3" thick, whitish, glabrous, hollow, subequal or slightly 
attenuated upwards ; spores elliptical, obliquely apiculate, 8 X 5 On 
trunks, stumps, heaps of dead leaves, etc. Slightly caespitose. 
Species excluded. 
C. pulchrifolius Pk. Rep. N. Y. St. Mus. Nat. His. 29 -.41. Pileus mem¬ 
branaceous, conical or campanulate, striate to the small yellowish disk, 
cinereous, sprinkled with minute whitish scales or granules; lamellae 
narrow, crowded, free, cinnamon-brown, often with a few minute hyaline 
spine-like processes; stipe slender, fragile, hollow, white; spores elliptical, 
brown with slight rosy tinge, 7.5 jx. Plant solitary, 2 , ~3 / high; pileus 
6"-i2 n broad; stipe scarcely 1 11 thick. Ground in woods. Sept. Does 
not accord well with genus Coprinus , as spores are brown and gills 
not deliquescent, nor with Psathyra for gills are free, pileus not hygro- 
phanous, nor with Psathyrella for gills are free and spores brown. Re¬ 
sembles Coprinus most. (Massee suggests that it may be a Bolbitius.) 
