Part 4, 1915] AGARICACEAE 269 
80. Marasmius subcyathiformis Murrill, sp. nov. 
Pileus rather thin, convex to depressed, solitary to subcespitose, 1-1.7 cm. broad; surface 
pruinose to glabrous, not striate when moist, brownish with a violet tint, margin concolorous, 
strongly inflexed on drying: lamellae pallid, adnate, of medium distance, not interveined, 
inserted, narrow, some of them forking: stipe slender, equal, densely pruinose or finely tomen- 
tose, rarely becoming subglabrous near the middle and appearing brownish, usually twisted 
when dry, 2-4 cm. long, 1-1.5 mm. thick. 
Type collected on fallen dead sticks in an orchard at Colima, Mexico, January 3-4, 1910, W.A. & 
Edna L. Murrill 615 (herb. N. Y. Bot. Gard.). 
DISTRIBUTION: Mexico. 
81. Marasmius Johnstonii Murrill, sp. nov. 
Pileus convex to plane, thin, opaque, gregarious, reaching 1-1.5 cm. broad; surface brown, 
fading to light-brown at times on drying and often becoming paler on the disk, finely pruinose 
to glabrous, finely whitish-tomentose at times on the disk, not striate, margin entire, concolor- 
ous, scarcely inflexed on drying: lamellae very close and narrow, many times inserted, not inter- 
veined, adnate to the enlarged apex of the stipe, white to pallid, the edges whitish-pruinose: 
stipe concolorous, very slender, equal, finely whitish-pubescent, not becoming glabrous, at- 
tached to the substratum by an expanding mat of mycelium, 2-3 cm. long, 1 mm. thick. 
Type collected on fallen dead leaves at Rio Piedras, Porto Rico,May 25,1913, John R. Johnston 
912 (herb. N. Y. Bot. Gard.). 
DisTRIBUTION: Known only from a few collections in the type locality. 
82. Marasmius polyphyllus Peck, Ann. Rep. N. Y. State Mus. 51: 
286. 1898. 
Pileus fleshy, thin, convex or nearly plane, gregarious or cespitose, 2.5-5 cm. broad; 
surface smooth, whitish to pale-reddish-brown, the disk darker in dried plants: context having 
the odor and taste of onions; lamellae adnexed or nearly free, very crowded, narrow, white, 
becoming yellowish in dried plants: spores minute, 5-6 X 3-4 uw: stipe equal, hollow, 4-7 cm. 
long, 2~4 mm. thick, reddish-brown, covered with a white tomentum which is more abundant 
toward the base. 
TYPE LocaLity: New York. 
Hasitat: Shaded, damp ground. 
DISTRIBUTION: New York. 
83. Marasmius prasiosmus Fries, Epicr. Myc. 376. 1838. 
Agaricus prasiosmus Fries, Obs. Myc. 2: 153. 1818. 
Pileus submembranous, soft, campanulate, convex, expanded, obtuse, gregarious, 2-4 cm. 
broad; surface rugulose-sulcate, glabrous, whitish or yellowish, the disk darker: context having 
astrong odor of onions; lamellae attached, subcrowded, narrow, white: spores white, 12-15 
X 3-4: stipe fistulose, pallid, glabrous above, subtomentose and thickened downward, 
pallid, then rufous or fuscous, 5-8 cm. long, 2 mm. thick. 
TYPE LOCALITY: Sweden. 
Hasirat: Upon old leaves in woods. 
DISTRIBUTION: Temperate North America; also in Europe 
Truusrrations: Cooke, Brit. Fungi pl. 1120 (1074) ; Gill. Cham Fr. $1. 200 (447). 
ExsiccaTi: ?Rav. Fungi Am. 468 (as M. alliaceus Bries). 
84. Marasmius confluens (Pers.) Ricken, Blatterp. Deutschl. 72. 
1911. 
Agaricus confluens Pers. Syn. Fung. 368. 1801. 
Collybia confluens Fries, Epicr. Myc. 88. 1838. 
Pileus subfleshy, dry, broadly convex to plane, cespitose, 1.5-3.5 cm. broad; surface 
smooth, pinkish-brown, becoming yellowish-brown or almost white in dry plants; margin 
thin, often involute even in old, dried plants: lamellae narrow, crowded, free, remote, white 
or slightly discolored in age: spores 7-8 X 3-3.5 uw: stipe equal, enlarged at the apex, hollow, 
