C. laniger Pk. Bull. Torr. Bot. Cl. 22:491. Pileus thin, conical or cam- 
panulate, with tawny, tomcntose or tloccose scales, which partly or wholly 
disappear, sulcate-striate, pallid, tawny or grayish ochraceous ; gills whit¬ 
ish then brownish-black; stipe slightly thickened at the base, pruinose, 
hollow, white; spores oblong-elliptical, 7.5-10 X 4 p. Pileus 6"-i2 n broad, 
stipe about i' long, i"-2 n thick. Caespitose, at base of cottonwood stumps. 
C. Seymouri Pk. Rep. N. Y. St. Mus. Nat. His. 28:49. Caespitose, 
fragile. Pileus thin, soon expanded, smooth, or sprinkled with minute 
granular scales, dark brown, disk sometimes with reddish tinge, strongly 
striate or subplicate, margin thin, soon revolute and splitting; gills close, 
narrow, reaching the stipe, brown then black; stipe equal, hollow, smooth 
or slightly pulverulent, white; spores broadly ovate, 6-7.5 X 5-6 p. Com¬ 
pressed, 3'-4' high, pileus S"-i2 n broad, stipe 1" thick. Clay soil. Oct. 
C. granulosus Clem. Univ. Nebr. Bot. Surv. Rep. 2:39. Pileus mem¬ 
branaceous, ovoid-oblong, at length campanulate, closely radiate-sulcate, 
furfuraceous, pale yellowish-brown, umbo prominent, translucent, flavo- 
fuscous, at first covered with more or less persistent coarse brown gran¬ 
ules ; stipe white, hollow, equal, everywhere persistently pruinose ; gills 
ventricose, brown then black, touching, at length free; spores oblong-ellip¬ 
tical, brownish-purple, 1-2 guttulate, 8-10 X 5-6 p. Wet ground in 
greenhouse. 
C. virgineus Bann. in Pk. Rep. N. Y. St. Mus. Nat. His. 44:71. Pileus 
ovate, campanulate or cylindrical, pale ochre-colored, margin thin, torn, 
tloccose; gills narrrow, close, forked, white becoming dark but never 
black, adnexed; stipe 3.5' long, stout, somewhat stuffed, attenuated at 
apex, flattened, tloccose, spores black. Caespitose or gregarious. 
b. Gills free. — * Stipe glabrous. 
C. nycthemcrus Fr. Ep. 251. Pileus 6 r, S n broad when expanded, mem¬ 
branaceous, at first conico-cylindrical, then expanded and splitting, floccose- 
mealy, radiately plicate, margin striate, striae furcate, then naked, gray, 
disk tawny; gills free, at length remote, narrow, blackish; stipe 2'-$' 
long, equal hollow, flaccid, whitish, glabrous ; spores 9 X 6 p. On dung 
and manured ground. Subcaespitose. 
C. subglobatus B. & C. Proc. Amer. Acad. Arts & Sci. 1858:118. Pileus 
hemispherical then expanding, almost even, pale brown, covered with a 
thick whitish downy veil, about 4-5 cm. across; gills free, broad, white 
then dusky-purple; spores elliptical, 7-8 p, stipe white, equal, slightly 
curved, hollow, smooth, 6-8 cm. long. On banks. 
C. arenatus Pk. Rep. N. Y. St. Mus. Nat. His. 46 : 27. Pileus thin, at 
first broadly ovate or sub-hemispherical, soon convex or campanulate, 
with small white tomentose scales, which soon disappear, striate on the 
margin, whitish or grayish-white becoming grayish-brown ; gills broad, 
crowded, free, grayish-white, soon purplish-brown, then black, with pro¬ 
jecting hyaline cystidia ; stipe short, equal, glabrous, hollow, white ; spores 
subglobose, 7.5-8 X 6-7.5 H>- Pileus I'-i' broad, stipe i / -2 / long, i"-2 'i 
thick. Solitary or gregarious, on sandy soil. May. Mycelium binds 
sand into a globular mass at base of stipe. 
C. Spragueii B. & C. Ann. Nat. His. Oct. 1859. Pileus 6 n -f broad, 
membranaceous, conical, then campanulate, becoming expanded and revo¬ 
lute, tomentose, grayish, disk tawny, margin coarsely striate ; stipe 1 •5 , -2 / 
long, about 1" thick, equal, smooth, pale cinnamon, hollow ; gills free, 
few, distant, narrow, white becoming blackish ; spores elliptical; slightly 
curved, 10 X 5 p. On the ground. 
C. rotundosporus Pk. Rep. N. Y. St. Mus. Nat. His. 31 : 35. Pileus thin, 
campanulate, whitish or pale cinereous, with thin, tloccose, subpersistent 
tomentum, even; gills free; stipe slightly tapering upwards, white ; spores 
subglobose, 7.5-8.75 p. Plant 2'-3' high, pileus about 1' broad. About 
roots of trees in woods. 
