Part 3, 1917] AGARICACEAE 187 
1. Pluteolus callistus Peck, Ann. Rep. N. Y. State Mus. 46: 140 (60). 
1893. 
- Agaricus callistus Peck, Bull. Buffalo Soc. Nat. Sci. 1: 52. 1873. 
Galera callista Sacc. Syll. Fung. 5: 865. 1887. 
Pileus thin, expanded, subumbonate, 1.2-2 em. broad; surface smooth, viscid, olivaceous 
or ochraceous, bright-chestnut on the umbo, assuming a dull-metallic-green color on drying, 
margin striatulate; lamellae thin, crowded, ventricose, attached to but easily separating from 
the stipe, yellowish, becoming bright-ferruginous, white on the edges when dry; spores 8.7 
X Ju; stipe equal, hollow, pruinose, yellow, 2.5-3.5 cm. long, 1 mm, thick. 
Types LOCALITY: Croghan, New York. 
Hazrat: Exsiccated water holes in swampy woods. 
DistRIBUTION: New York and Massachusetts. 
2. Pluteolus glutinosus Clements, Bot. Surv. Neb. 5:10. 1901. 
Pileus membranous, conic-campanulate, at length explanate and repand, umbonate, 
1,5-2 cm, broad; surface glabrous, thickly covered with a tenacious mucilage, gray-stramineous, 
fuscescent to the margin, which is striate to the middle, at length split; lamellae free, distant, 
ventricose, brown; spores ovoid or ovoid-ellipsoid, smooth, amber, 13-16 X 10-124; stipe 
graceful, hollow, shining, equal, densely fibrillose-pulverulent, pale-ochroleucous, white-striate 
toward the apex, 5-10 cm. long, 3 mm. thick. 
TYPE LocALity: Otowanie Woods, Nebraska. 
Hasrrat: Among stercorate leaves. 
DISTRIBUTION: Known only from the type locality. 
3. Pluteolus albus (Peck) Murrill. 
Galera alba Peck, Bull. Torrey Club 24: 143. 1897. 
Pileus submembranous, campanulate, very fragile, 2.5-5 em. broad; surface moist, striate, 
white, splitting on the margin; lamellae narrow, crowded, white, becoming brownish-ferru- 
ginous; spores ellipsoid, 12.5-15 X 7.5-10 y; stipe fragile, hollow, glabrous, white, 3.5-6.5 cm. 
long, 2-4 mm. thick. 
TYPE Locality: Brookings, South Dakota. 
Hasirar: On rich ground in the shade of weeds. 
DisTRIBUTION: Known only from the type locality. 
4. Pluteolus versicolor (Peck) Murrill. 
Galera versicolor Peck, Bull. Torrey Club 24: 143. 1897. 
Pileus thin, fragile, convex or subcampanulate, 3.5-6.5 cm. broad; surface moist or slightly 
viscid, glabrous, usually pale-yellow, sometimes brownish-tan-colored, margin striate; lamellae 
crowded, white or pale-yellow, becoming reddish-ferruginous; spores very unequal in size, 
12.5-20 X 7.5-12.5 pn, usually containing one to three nuclei; stipe equal, fragile, hollow, slightly 
mealy or pruinose, often tomentose at the base, white, 2.5-10 cm. long, 2-4 mm. thick. 
TYPE LOCALITY: Brookings, South Dakota. 
Hasitat: On manure and other decaying vegetable matter. 
DIsTRIBUTION: Known only from the type locality, 
5. Pluteolus coprophilus Peck, Ann. Rep. N. Y. State Mus. 46: 59. 
1893. 
Bolbitius radians Morgan, Jour. Cine. Soc. Nat. Hist. 18: 37. 1895. 
Pileus thin, submembranous, fragile, conic or campanulate, becoming nearly plane, some- 
times cespitose, 2.5-6 cm. broad; surface somewhat viscid when moist, pinkish-gray, margin 
finely striate; lamellae narrow, crowded, free, pale-cinnamon-colored; spores ellipsoid, dark- 
ferruginous, 12.5-15 X 7.5 y; stipe long, straight or somewhat flexuous, hollow, flocculose, 
white, sometimes tinged with pink, 5~8 cm. long, 2-4 mm. thick. 
TYPE LOCALITY: West Albany, New York. 
Hasrrat: In dung heaps. . 
DistRIsutION: Canada to Ohio in the eastern United States. 
Exsiccati: Ellis & Ev. N. Am. Fungi 3404. 
