266 NORTH AMERICAN FLORA [VOLUME 9 
or pallid: stipe slender, equal, whitish-pubescent to glabrous, very pale avellaneous, smooth, 
becoming polished, yellowish-mycelioid at the base, 4-5 cm. long, less than 1 mm. thick. 
Type collected on fallen dead leaves and twigs, at Lake Cunningham, New Providence, Bahama 
Islands, September 8, 1904, Elizabeth G. Britton 611 (herb. N. Y. Bot. Gard.). 
DIstRIBUTION: Known only from the type locality. 
64. Marasmius hemileucus (Berk. & Curt.) Murrill. 
Agaricus (Collybia) hemileucus Berk. & Curt. Jour. Linn. Soc. 10: 285. 1868. 
Pileus plane, orbicular, subcespitose, 2 em. broad; surface fuscous, smooth, glabrous: 
lamellae adnate, crowded, white: stipe pulverulent, concolorous, 5-7 cm. long, 2 mm. thick. 
TYPE LOCALITY: Cuba. 
Hasirar: On dead leaves and sticks. 
DISTRIBUTION: Cuba; New Providence, Bahamas. 
65. Marasmius montanus Murrill, sp. nov. 
Pileus convex to subexpanded, umbilicate or depressed, cespitose, 2~4 cm. broad; surface 
smooth, glabrous, very distinctly striate over the lamellae, rosy-isabelline to fulvous‘or bay, us- 
ually bay at the center, margin incurved when young, undulate: lamellae white or dirty-white, 
adnate or adnexed, narrow, of medium distance: spores ellipsoid, smooth, hyaline, granular, 
5-7.5 X3-4.5 mw: stipe cylindric, equal, sometimes curved, whitish-pulverulent to subglabrous, 
rosy-isabelline to bay, paler at the apex, 1.5-4 cm. long, 1-2 mm. thick. 
Type collected on the decayed trunk of a tree-fern at Morce’s Gap, Jamaica, December 29, 30, 
January 2, 1908, W. A. & Edna L. Murrill 696 (herb. N. Y. Bot. Gard.). 
DisTRiBuTION: Blue Mountains, Jamaica, above 1500 m. 
66. Marasmius fibrosipes Berk. & Curt. Jour. Linn. Soc. 10: 293. 
1868. 
Pileus subcoriaceous, thin, depressed, 4 cm. broad; surface fulvous, glabrous, margin in- 
flexed, whitish: lamellae free, remote, rounded behind, crowded, narrow: spores hyaline: stipe 
thick, fibrous-squamose, white tinged with fuscous, solid, 2.5 cm. long, 4 mm. thick. 
TYPE LOCALITY: Cuba. 
Hasitat: On dead wood. 
DIstRIBUTION: Known only from the type locality. 
67. Marasmius subpruinosus Murrill, sp. nov. 
Pileus convex, umbonate-depressed at the center, cespitose, reaching 7 cm. broad; surface 
rugose-striate, isabelline, smooth and pale-latericeous on the disk, finely pruinose under a lens 
even in age, margin thin, splitting easily, contorted on drying: lamellae adnate, rather broad, 
crowded, scarcely interveined, isabelline: spores globose, smooth, hyaline, 4~7 yu: stipe equal, 
cylindric or compressed, griseous, finely and persistently tomentose, about 5 cm. long and 
3-5 mmm. thick. 
Type collected on a dead log in woods in Troy and Tyre, Cockpit Countr amai 
12-14, 1909, W. A. Murrill & W. Harris 947 (herb. N. Y. Bot. Gard.). lace nad 
DISTRIBUTION: Known only from the type locality. 
68. Marasmius polyporoides Murrill, sp. nov. 
Piles convex, not fully expanding, neither umbonate nor depressed, gregarious, 1-2 cm. 
broad; surface glabrous, smooth, except on the disk where it is rugose-reticulate, not at all 
striate, ferruginous, often becoming dull-bay on drying, margin thin, entire, concolorous, 
involute on drying: hymenium poroid, white, the principal lamellae being closely connected 
by transverse partitions; lamellae adnate, very thin, very narrow, arcuate, many times in- 
serted: stipe slender, smooth, glabrous, shining, equal, chestnut to blackish, 4-5 em. long, 1-1.5 
mim. thick. ‘ 
Type collected on leaf-mold in woods in British Honduras, October, 1906, Morton E. Peck (berb. 
N. Y. Bot. Gard.). 
DISTRIBUTION: British Honduras. 
