Part 4, 1915] AGARICACEAE 275 
or subalutaceous in drying: lamellae adnate or slightly decurrent, subdistant, thin, sometimes 
branched or irregular, the interspaces slightly venose, whitish: spores 7-9 X 4-5 yw: stipe 
slender, white within, solid, grayish-tawny, downy, tomentose at the base, 2-3 cm. long, 1-1.5 
mm. thick. 
TYPE LocaLtity: North Elba, New York. 
HasitatT: Damp, mossy places under spruce and balsam trees. 
DIstTRiIBuTION: Adirondack Mountains, New York. 
107. Marasmius velutipes Berk. & Curt. Ann. Mag. Nat. Hist. IIT. 4: 
294. 1859. 
Pileus submembranous, tough, plane or subumbilicate, greggrious, 8-20 mm. broad; 
surface dull-chestnut to ochraceous-brown, lighter or pallescent at the center, smooth; margin 
at first involute, thin, even, smooth, often becoming striate: context thin, tough, white or 
whitish; lamellae white, becoming yellowish, narrow, close, adnate: spores 6.5 X 44.5 u: 
stipe reddish-brown, covered above with whitish tomentum, below with tawny-yellow to 
brown hairs, flexuous, equal or swollen and spongy below, hollow, often rooting, 3-5 cm. long, 
1-2 mm. thick. 
Tyre LOCALITY: Eastern United States. 
Hasitat: Among dead leaves of deciduous trees. 
DIstRIBUTION: New England to the Carolinas and west to the Mississippi Valley. 
108. Marasmius subtomentosus Peck, Bull. Torrey Club 22: 487. 
1895. 
Pileus thin or subfleshy, subcampanulate or nearly plane, 1-2 cm. broat#l; surface smooth 
or minutely tomentose-pubescent, gray or reddish-gray, margin scarcely striate: lamellae 
free or scarcely adnexed, subdistant, broad, ventricose, concolorous: spores 10-13 X 5-6 p: 
stipe equal or thickened at the base, gray or gray-brown, white within, silky-tomentose, 2.5 cm. 
jong, 2 mm. thick. 
TYPE LOCALITY: Kansas. 
Hapitat: Grass roots. 
DISTRIBUTION: Kansas. 
109. Marasmius subpilosus Peck, Bull. Torrey Club 30:95. 1903. 
Pileus thin, convex or nearly plane, 1-2 cm. broad; surface even or rugulose at the center, 
minutely pruinose-pubescent, whitish with brown center, often tinged with yellow; margin 
striate: lamellae rather broad, ventricose, adnate, subsinuate, not close, the edges minutely 
ciliate: spores 8 X 2.5-3 yw; cystidia 30-40 7-15 uw: stipe slender, stuffed or hollow, reddish- 
brown, white at the apex, pruinose-pubescent above, gray-tomentose below, 3-5 cm. long, 
1 mm. thick. 
TYPE LOcALITy: Idaho. 
Hasirat: Upon leaves and branches in wet woods. 
DISTRIBUTION: Western states. 
110. Marasmius magnisporus Murrill, Mycologia 4: 166. 1912. 
Marasmius salignus major Peck, Ann. Rep. N. Y. State Mus. 41:85. 1888. 
Pileus thin, tough, convex, at times umbonate, cespitose or closely gregarious, 1-1.5 em. 
broad; surface glabrous, white to pale-isabelline with a pinkish tint; margin sometimes slightly 
striate: context mild; lamellae squarely adnate or decurrent, distant, broad, strongly inter- 
veined, inserted, white, entire: spores oblong, 10-12 X 4-6 uw: stipe increasing upward, tough, 
grayish-avellaneous below, paler above, minutely striate, pruinose to glabrous, 1-3 cm. long, 
2 mm. thick. 
‘Type Locatity: New Vork Botanical Garden, New York. 
Hasirat: Upon dead wood. 
DistRIBUTION: Temperate North America. 
ILLUSTRATIONS: Hard, Mushrooms f. 107; Mycologia 4: pl. 68, f. 7. 
