Part 4, 1915] AGARICACEAE 263 
47. Marasmius troyanus Murrill, sp. nov. 
Pileus slightly eccentric from its position on a standing trunk, depressed, gregarious to 
cespitose, reaching 1-1.5 cm. broad; surface nearly white, smooth, pulverulent to glabrous, 
margin thin, striate, concolorous: lamellae very broad and irregular, not crowded, inserted, 
not interveined, white, adnate or slightly sinuate; spores ellipsoid, smooth, hyaline, granular, 
8-10 X5-7 u: stipe curved, short and rather stout, enlarged above, smooth, glabrous or minutely 
pruinose, skin-colored, hollow, reaching 1 cm. long and 2 mm. thick. 
Type collected on a dead standing palm trunk in an open field in Troy and Tyre, Cockpit 
Country, Jamaica, W. A. Murrill & W. Harris 872 (berb. N. Y. Bot. Gard.). 
DisTRIBUTION: Known only from the type locality. 
48. Marasmius subplexifolius Murrill, sp. nov. 
Pileus very thin, membranous, somewhat eccentric and irregular, deeply depressed, gre- 
garious or very slightly cespitose, 1.5-2.5 cm. broad; surface glabrous, slightly radiate-striate, 
somewhat pellucid, white, margin concolorous, irregular or slightly lobed: lamellae distant, 
adnate or rounded behind, narrow, inserted, interveined with a reticulate network, white, thin, 
becoming yellowish and somewhat undulate on drying: stipe eccentric, expanding upward, 
emooth, pruinose to glabrous, hollow, whitish to rosy-isabelline, 1.5-2.5 cm. long, 1.5-3 mm. 
thick. 
Type collected on dead wood in Grenada, 1905, W. E. Broadway (herb. N. Y. Bot. Gard.). 
DISTRIBUTION: Known only from the type locality. 
49. Marasmius albofuscus Berk. & Curt. Jour. Linn. Soc. 10: 295. 
1868. 
Pileus thin, plane, umbonate, 12 mm. broad; surface white, brownish on the disk, reticulate, 
margin striate: lamellae adnate-decurrent, few, distant, broad, interstices trabeculate: stipe 
slender, glabrous, solid, slightly enlarged above, 2.5 cm. long, 0.5 mm. thick. 
TYPE Locality: Cuba. 
Hasrrat: On logs in woods. : 
DistrRipuTIon: Known only from the type locality. 
50. Marasmius cubensis Berk. & Curt. Jour. Linn. Soc. 10: 296. 
1868. 
Pileus thin, plane, umbonate, 18 mm. broad; surface white, rugose, margin sulcate: 
lamellae concolorous, thin, distant, adnexed, interveined: stipe concolorous, pulverulent, thin, 
2.5 cm. long, 1-1.5 mun. thick. 
TYPE LOCALITY: Cuba. 
Hasrrat: On dead wood. : 
DisrriBuTION: Known only from the type locality. 
51. Marasmius hinnuleiformis Murrill, sp. nov. 
Pileus subconic or convex to sttbexpanded, variable in size, solitary to subcespitose, 0.5-2 
cm. broad; surface glabrous, whitish, ochraceous on the umbo, becoming pale-brownish and 
striate over the lamellae on drying, margin entire, concolorous, plicate on drying: lamellae 
adnate, of medium breadth and distance, twice inserted, not interveined, white, whitish- 
asperulate under a lens: spores ellipsoid, smooth, hyaline, pointed at one end, 5-63 u: stipe 
equal or slightly tapering upward, finely pruinose to glabrous, pale-brownish, conspicuously 
whitish-mycelioid at the base, 3-5 cm. long, 1-2 mm. thick. 
Type collected in humus in old acorn cups on the ground in woods at Jalapa, Mexico, December 
12-20, 1909, W. A. & Edna L. Murrill 163 (herb. N. Y. Bot. Gard.). 
DistRIBution: Known only from Jalapa, Vera Cruz. 
52. Marasmius clitocybiformis P. Henn. Hedwigia 43: 182. 1904. 
Pileus membranous, subtranslucent, dry, umbilicate to subinfundibuliform, cespitose, 
4-6 cm. broad; surface whitish, radiate-striate, entirely glabrous even under a lens, margin 
