Part 4, 1915] AGARICACEAE 261 
37. Marasmius colimensis Murrill, sp. nov. 
Pileus convex, not fully expanded, slightly depressed at the center, very thin, subtrans- 
lucent, gregarious, rarely subcespitose, 1 cm. broad; surface conspicuously striate over the 
lamellae, pale-chestnut, rosy-avellaneous on drying, finely pruinose to glabrous, margin entire, 
concolorous, somewhat deflexed on drying: lamellae white, distant, inserted, adnate, not 
interveined, rarely forking, narrow: spores globose, smooth, hyaline, 5-6 uw: stipe slender, sub- 
concolorous, smooth, pruinose to glabrous, slightly twisted on drying, often whitish at the apex, 
whitish-mycelioid at the base, 2-3 cm. long, 1 mm. thick. 
Type collected in soil mixed with bits of leaves and sticks in an orchard at Colima, Mexico, 
January 3-4, 1910, W. A. & Edna L. Murrill 609 (herb. N. Y. Bot. Gard:). 
DISTRIBUTION: Known only from the type locality. 
38. Marasmius soliformis Murrill, sp. nov. 
Pileus convex, not fully expanding, very thin, subtranslucent, solitary, 1 cm. btoad; 
surface glabrous, dull-isabelline with bay disk and conspictiousrays, entirely changing on drying, 
the disk and rays becoming white while the remainder is rosy-brown, margin entire, deflexed 
on drying: lamellae rather narrow, distant, adnate to the much enlarged apex of the stipe, 
inserted, not interveined, whitish-brown on the edges: stipe dull-bay or brownish, more or 
less covered with minute whitish pubescence, conspicuously whitish-pubescent at the expanded 
apex, long and slender, smooth, not striate, scarcely twisted on drying, only slightly expanding 
as it enters the leaf, 4-6 cm. Jong, 1 mm. thick. 
Type collected on fallen dead leaves on Sir John Peak, Jamaica, 2000 m. elevation, January 5, 
1909, W. A. Murrill 789 (berb. N. Y. Bot. Gard.). 
DIstRIBUTION: Known only from the type locality. 
39. Marasmius atroviridis Berk. & Curt. Jour. Linn. Soc. 10: 295. 
1868. 
Pileus thin, depressed, 8 mm. broad; surface blackish-blue-green, glabrous; lamellae con- 
colorous, broad, crowded, adnexed: stipe glabrous, dilated above, 12 mm. long. 
‘Type LOCALITY: Cuba. 
Hasrrat: On rotten wood in thickets. 
DiIsTRIBUTION: Known only from the type locality. 
40. Marasmius pallescens Murrill, sp. nov. 
Pileus campanulate to subexpanded, becoming slightly umbilicate, gregarious, 5-8 mm. 
broad; surface glabrous, conspicuously radiate-sulcate over the lamellae, pale-red, fading to 
isabelline on drying, margin entire, concolorous: lamellae very few and distant, about 10 in 
ntumber, white, not inserted, broadly adnate and ventricose, tapering toward the margin, 
interspaces entirely smooth and yellowish: stipe capillary, smooth, glabrous, avellaneous, fuli- 
ginous below, whitish-mycelioid at the base, 2-2.5 cm. long, 0.5 mm. thick. 
Type collected on leaves and sticks in woods at Rio Piedras, Porto Rico, August 18, 1912, 
John R. Johnston 556 (herb. N. Y. Bot. Gard.). ; 
DistRIBUTION: Known only from the type locality. 
41, Marasmius jamaicensis Murrill, sp. nov. 
Pileus conic, not fully expanding, umbonate, membranous, gregarious, reaching 5 mm. 
broad; surface radiate-striate, becoming multisulcate on drying, unicolorous, bay, glabrous, 
not polished, margin entire, concolorous, deflexed and folded on drying: lamellae broad, rather 
crowded, adnexed, white: stipe slender, fili’--m, white or pallid, smooth, minutely pubescent 
to subglabrous, whitish-mycelioid at the base, 3-4 cm. long, scarcely 1 mm. thick. 
Type collected on fallen dead leaves at Port Maria, Jamaica, November 14, 1902, F. S. Earle 475 
(herb. N. Y. Bot. Gard.). 7 
DistRIBurion: Known only from the type locality. 
42. Marasmius Wilsonii Murrill, sp. nov. 
Pileus very thin, membranous, convex to expanded, scarcely umbonate, gregarious, about 
1 cm. broad: surface glabrous, unicolorous, light-bay, even, becoming slightly rugose on drying, 
