Parr 4, 1915] AGARICACEAE 281 
136. Marasmius pyrinus Ellis, Bull. Torrey Club 8: 64. 1881. 
?Marasmius capillipes Sace. Nuovo Giorn. Bot. Ital. 8: 162. 1876. 
Piles membranous, hemispheric, slightly umbilicate, minute, 1-1.5 mm. broad; surface 
sulcate-striate, rough or spiny under a lens with ovoid, pointed cells, at first pallid, becoming 
chestnut: lamellae few, distant, white: spores obovoid, 7-8 X 2.5-3; cystidia oblong- 
fusoid, narrowed to a point above, 12-13 u long: stipe filiform, pallid above, often striate, 
6-7 mm. long. 
Type LocaLiry: Probably New Jersey. 
HaBitat: Dead pear leaves. 
DrsrRIBUTION: North America; possibly also in Italy. 
Exsiccati: Ellis, N. Am. Fungi 401. 
137. Marasmius thujinus Peck, Bull. N. Y. State Mus. 67: 26. 1903. 
Pileus membranous, hemispheric or convex, often subumbilicate, 2-3 mm. broad; surface 
subglabrous, minutely pulverulent-tomentose under a lens, cinereous tinged with lilac, margin 
distantly striate: lamellae adnate, few, distant, white: spores ellipsoid, pointed, 7-8 K 3-4 uw: 
stipe capillary, inserted, pallid, dry, pellucid, glabrous, at times slightly brownish or minutely 
floccose at the base, 12-24 mm. long, scarcely thicker than a hair. 
Type LocaLity: North Elba, New York. 
Hasirat: Fallen leaves of Thuja occidentalis. 
DistrRiBuTION: Known only from the type locality. 
138. Marasmius concinnus Ellis & Ev. Proc. Acad. Phila. 1893: 
441. 1894. 
Pileus minute, convex, cespitose, 1 mm. broad; surface pruinose, smoky-brown: lamellae 
adnate, subdistant, pruinose, the edges obtuse: spores globose, hyaline, 3 u: stipe attenuate 
above, white, hairy-strigose below, pruinose-pubescent at the apex, 2 mm. long. 
TYPE LOCALITY: Mt. Cuba, Delaware. 
HaBitat: Dead Euonymus twigs. 
DistRIBUTION: Known only from the type locality. 
139. Marasmius alliatus (Schaeff.) Schrét. Krypt.-Fl. Schles. 31: 
599. 1889. 
Agaricus alliatus Schaeff. Fung. Bavar. 4: Ind. 43. 1774. 
Marasmius scorodonius Fries, Epicr. Myc. 379. 1838. 
Pileus soft, fleshy, soon expanded, 1-2 em. broad; surface at first even and rufous, soon 
becoming smooth, rugulose, crisped, and white: context having a strong odor of onions; 
lamellae adnate, crisped, white: spores.6-8 X 3-4 uw: stipe horny, hollow, equal or enlarged 
above, red or reddish-brown, glabrous, shining, 2-4 cm. long, 1-2 mm. thick. 
TYPE LOCALITY: Bavaria. 
Hasrrat: Upon decaying vegetable debris in woods. 
DISTRIBUTION: Temperate North America; also in Europe. 
ILLUSTRATIONS: Fries, Sv. Aetl. Svamp. pl. 32; Britz. Hymen. Sudb. Marasm. f. 8; Cooke. Brit. 
Fungi pl. 1079 (1125) A; Cordier, Champ. Fr. #1. 14, f. 15; Hard, Mushrooms f. 109; i. & P. Nat. 
Pfl, **: f. 113, E; Bot. Zeit. 18: ol. 14, 0 15; Pat. Tax. Hymén. 145, pl. 2; Ricken, Blatterp. Deutschl. 
pl. 25, f. 6; Schaeff. Fung. Bavar. pl. 9. 
EXSICCATI: Herpell, Prap. ied 1 12; Jacz. Fungi Rossiae 181; Krieger, Fungi Sax. 367; Rab.- 
Wint. Fungi Eur. 1803; Romell, Fungi Scand. 1; Roum. Fungi Sel. 5504; Sydow, Myc. Germ. 852; 
Sydow, Myc. Mar. 304. 
140. Marasmius delectans Morgan, Jour. Myc. 11: 206. 1905. 
Pileus subcoriaceous, convex, then expanded and depressed, 1-2 cm. broad; surface 
glabrous, rugulose, white, changing in drying to yellow or pale-alutaceous: lamellae emarginate- 
adnexed, subdistant, slightly venose-connected, moderately broad, unequal, white: spores 
lance-oblong, 7-9 X 4: stipe long, slender, slightly tapering upward, arising from abundant 
white mycelium, glabrous, shining, brown, white at the apex, 3~5 cm. long, 1-1.5 mm. thick. 
TYPE LOCALITY: Ohio. 
Hasirat: On old leaves in deciduous woods. 
DISTRIBUTION: New York to Michigan and Ohio. 
ILLUSTRATIONS: Hard, Mushrooms f. 114; Myc. Bull. f. 200. 
