Part 4, 1915] AGARICACEAE 265 
58. Marasmius obsoletus Murrill, sp. nov. 
Pileus conic to convex, with prominent hemispheric umbo, thin and much worn in ap- 
pearance, which is more pronounced on drying, gregarious or subcespitose, reaching 2 cm. 
broad; surface cinereous to pale-isabelline, uneven, multistriate from the prominent umbo, which 
is considerably darker in moist weather, glabrous, margin very thin, soon becoming split or 
torn: lamellae adnate, narrow, of medium distance, arcuate, not interveined, white to pale- 
yellowish: stipe fuliginous when moist, grayish when dry, equal, densely and finely tomentose, 
yellowish-mycelioid at the base, twisted on drying, 5-7 cm. long, 1.5-2 mm. thick. 
Type collected on dead wood at Rio Piedras, Porto Rico, December 25, 1911, John R. Johnston 131 
(herb, N. Y. Bot. Gard.). 
DISTRIBUTION: Porto Rico. 
59. Marasmius putredinis Berk. & Curt. Jour. Linn. Soc. 10: 295. 
1868. 
Pileus plane, thin, 1.5-2.5 cm. broad; surface fulvous or gray, glabrous: lamellae white, 
adnate, narrow: spores hyaline: stipe glabrous, concolorous, equal, solid, 18 mm. long, 1] mm. 
thick. 
TYPE LOCALITY: Cuba. 
Hasitat: On rotten wood in forests. 
DisTRIBUTION: Known only from the type locality. 
60. Marasmius coracicolor Berk. & Curt. Jour. Linn. Soc. 10: 294. 
1868. 
Piletts depressed or umbilicate, thin, soft, 18 mm. broad; surface fulvous, margin rugose- 
sulcate: lamellae concolorous, adnexed, crowded: spores gray in mass, reniform, minute: stipe 
rufescent, glabrous, sulcate, cartilaginous, 2.5 cm. long. 
TYPE LOCALITY: Cuba. 
Hasirat: On logs in woods. . 
DistrRrBuTION: Known only from the type locality. 
61. Marasmius pruinosifolius Murrill, sp. nov. 
Pileus convex, slightly umbilicate, opaque, solitary, 1.7 cm. broad; surface smooth, gla- 
brous, isabelline, margin entire, incurved when young, lilac-colored: lamellae free, separating, 
attenuate at both ends, very narrow and crowded, cinereous with a rosy tint, many times in- 
serted, not interveined, the edges distinctly pruinose: spores ellipsoid, smooth, hyaline, slightly 
curved on one side, 5-6.5 X3-4.5 wu: stipe equal, compressed, somewhat distorted and twisted, 
cinereous with a rosy tint, finely pruinose, 3 cm. long, 5 mm. thick. 
Type collected in soil in woods at Cinchona, Jamaica, December 25—January 8, 1908-9, W. A. & 
Edna L, Murrill 506 (herb. N. Y. Bot. Gard.). : 
DisTRIBUTION: Known only from the type locality. 
62. Marasmius cervinicolor Murrill, sp. nov. 
Pileus thin, depressed, cespitose, 1-2 cm. broad; surface glabrous, striate, fawn-colored, 
margin entire, concolorous: lamellae very narrow, crowded, subfree, pallid to subconcolorous: 
spores ellipsoid to slightly ovoid, smooth, hyaline, 7-8 X4-5 wu: stipe slender, equal, concolorous 
or somewhat darker, finely and densely velvety-pruinose, slightly expanded at the base, 3-5 
em. long, 1-2 mm. thick. 
Type collected on fallen decayed leaves at Castleton Gardens, Jamaica, October 28, 1902, F. S. 
Earle 223 (herb. N. Y. Bot. Gard.). : 
DISTRIBUTION: Known only from the type locality. 
63. Marasmius bahamensis Murrill, sp. nov. 
Pileus thin, opaque, convex to plane, gregarious to cespitose, 7-15 mm. broad; surface 
smooth, glabrous, radiate-rugose on drying, isabelline, slightly darker at the center, margin 
entire, concolorous: lamellae crowded, of medium breadth, adnexed, not interveined, white 
