264 NORTH AMERICAN FLORA [ VoLUME 9 
entire, concolorous, deflexed on drying: lamellae short-decurrent, very thin, narrow, inserted, 
of medium distance, whitish to pale-fuscous: spores globose, smooth, hyaline, 3.5-7 w: stipe 
firm, woody, terete; equal, smooth, finely tomentose, becoming partially subglabrous with age, 
cinereous to pale-fuscous, 5-8 em. long, 1.5-2.5 mm. thick. 
Type LocaLity: Miry, on the Jurud River, Brazil. 
Hasrtat: On decayed logs and stumps. -> ‘ 
Disrrisution: British Honduras; also in Bolivia and Brazil. 
53. Marasmius tortipes Berk. & Curt. Jour. Linn. 
Soc. 10: 298. 1868. 
Pileus campanulate, umbilicate, 12 mm. broad; surface white to plumbeous, puberulent, 
margin sulcate: lamellae concolorous: stipe subdiaphanous, glabrous, elongate, twisted, 8 cm. 
long, 2 mm. thick, clothed at the base with a weft of mycelium covering the surface of the wood. 
TYPE LOCALITY: Cuba. 
Hasitat: On rotten wood. 
DISTRIBUTION: Jalapa, Vera Cruz; Cuba. 
54. Marasmius viridifuscus Berk. & Curt. Jour. Linn. 
Soc. 10: 295. 1868. 
Pileus thin. plane, 12 mm. broad; surface pale-green, margin radiate-striate: lamellae green, 
broad, distant, decurrent: stipe blackish-brown below, glabrous, enlarged above, thin, 12 mm. 
long. 
Type LocaLtity: Cuba. 
HasiraT: On dead sticks in mountains. . 
DistRIBUTION: Known only from the type locality. 
55. Marasmius Harrisii Murrill, sp. nov. 
Pileus rather thick, of medium size, convex to plane, slightly umbonate, conspicuously 
furrowed and folded on drying, solitary, 2-3 cm. broad; surface smooth, glabrous, isabelline, 
somewhat pruinose on the umbo: lamellae broad, ventricose, inserted, rather crowded, slightly 
interveined, adnate, cream-colored: spores ellipsoid, smooth, hyaline, granular, about 5 2.5 u: 
stipe concolorous, fibrillose to glabrous, whitish-mycelioid at the base, about 3 cm. long and 
2-3 mm. thick. 
Type collected among dead leaves in woods in Troy and Tyre, Cockpit Country, Jamaica, Janu- 
ary 12-14, 1909, W. A. Murrill & W. Harris 851 (herb. N. Y. Bot. Gard.). 
DISTRIBUTION: Known only from the type locality. 
56. Marasmius cinereialbus Murrill, sp. nov. 
Pileus convex, gibbous, not fully expanding, cespitose, 2-3 cm. broad; surface subglabrous, 
faintly striate, at least when dry, grayish-white, isabelline or bay on drying, margin entire, 
concolorous, becoming strongly inflexed: lamellae adnexed or sinuate, often separating, crowded, 
narrow, arcuate, pallid to isabelline, sometimes bay in dried specimens: stipe long and slender, 
subequal, somewhat striate, especially at the apex, hollow, densely grayish-pulverulent, occa- 
sionally showing the blackish rind, mycelioid at the base, 4-8 cm. long, 1.5~2.5 mm. thick. 
Type collected in leaf-mold and sticks at Rio Piedras, Porto Rico, September 8, 1912, John R. 
Johnston 739 (herb. N. Y. Bot. Gard.). 
DistrRiBuTion: Known only from the type locality. 
57. Marasmius jalapensis Murrill, sp. nov. 
Pileus rather thick and opaque, hemispheric to subexpanded, slightly umbonate, at least 
when young, solitary, reaching 3 cm. broad; surface smooth but not polished, glabrous, some- 
times exhibiting minute cracks in the cuticle on drying, not striate, isabelline to fulvous, bay 
on the umbo, margin entire, concolorous, usually much deflexed on drying: lamellae narrow, 
crowded, adnexed, pallid to isabelline, finely pubescent under a lens: spores subglobose to 
ovoid, smooth, hyaline, 5~7 X 4 u: stipe inflated at the apex, hollow, smooth, glabrous, polished, 
light-bay above, chestnut-colored or brownish below, whitish-mycelioid at the base, sometimes 
twisted, at least when dry, reaching 6 cm. long and 2-3 mm. thick. . 
Type collected in leaf-mold on the ground in woods near Jal Mexi — 
W.A. & Edna L. Murrill 84 (herb. N. Y. Bot. Gard.). a a a 
DISTRIBUTION: Known only from Vera Cruz. 
