248 NORTH AMERICAN FLORA [VOLUME 9 
lamellae narrow, distant, not interveined, decurrent, white: stipe smooth, glabrous, white, 
slender, hollow, not twisted on drying, 2-2.5 cm. long, 0.5 mm. thick. 
Type collected on dead wood in British Honduras, 1906, Morton E. Peck (herb. N. Y. Bot. Gard.). 
DISTRISUTION: Known only from the type locality. 
3. Heliomyces striatus Murrill, sp. nov. 
Pileus convex to expanded or slightly depressed, translucent entirely to the center, gre- 
garious, 1-2 cm. broad; surface smooth, glabrous, shining, pallid, appearing like a thin animal 
membrane, striate over the lamellae from center to margin, the striations more conspicuous 
on drying, margin entire, not inflexed on drying: lamellae very narrow and distant, attenuate 
toward the margin, adnate, twice inserted, not interveined, white: stipe hollow, smooth, gla- 
brous, slightly tapering upward, bay to dark-chestnut, 4-5 cm. long, 1-2 mm. thick. 
Type collected on dead wood in British Honduras, 1906, Morton E. Peck (herb. N. Y. Bot. Gard.). 
DistRIBUTION: Known only from the type locality. 
4, Heliomyces subavellaneus Murrill, sp. nov. 
Pileus convex to expanded, slightly depressed, subtranslucent except at the disk, gre- 
garious, 1.5-2 cm. broad; surface smooth, glabrous, striate over the lamellae, the striations gray 
or black in dried specimens, avellaneous or with a pale-fuliginous tint, darker at the center, 
margin concolorous, entire, inflexed on drying: lamellae distant, narrow, a few short cnes 
inserted, not interveined, decurrent, white to discolored: stipe expanded and whitish-pruinose 
at the apex, glabrous and blackish-brown below, hollow, compressed on drying, 2.5 cm. long, 
1.5-2 mm. thick. 
Type collected on a mossy log near Rio Prieto, Porto Rico, 690-1035 m., August 10-15, 1914, 
J.A. Shafer 3690 (herb. N. Y. Bot. Gard.). 
DISTRIBUTION: Porto Rico and British Honduras. 
5. Heliomyces subspodoides Murrill, sp. nov. 
Pileus membranous, translucent, convex, deeply umbilicate, reaching 4 cm. broad; 
surface conspicuously striate over the lamellae, hygrophanous, pallid to discolored, margin 
entire, very thin, not incurved on drying: lamellae several times inserted, very narrow, atten- 
uate at both ends, connected by anastomosing veins, distant, pallid, decurrent, not rounded 
behind: stipe increasing below, smooth, glabrous, rather stout, hollow, pallid, about 3 cm. long 
and 3-5 mm. thick. 
Type collected on dead wood in British Honduras, 1906, Morton E. Peck (herb. N. Y. Bot. Gard.). 
DISTRIBUTION: Known only from the type locality. : 
6. Heliomyces hondurensis Murrill, sp. nov. 
Pileus convex to subexpanded, entirely translucent except at the center, not umbonate, 
at times slightly depressed, scattered, reaching 4 cm. broad; surface smooth, glabrous, striate 
over the lamellae, pallid, pale-bay on drying, margin entire, concolorous: lamellae of medium 
breadth, distant, 2 or 3 times inserted, adnate, not interveined, white to discolored: stipe slender, 
grayish-pruinose to glabrous and brownish, smooth, slightly twisted and longitudinally grooved 
on drying, 4-7 cm. long, 2-3 mm. thick. 
Type collected on dead wood in British Honduras, 1906, Morton E. Peck (herb. N. Y. Bot. Gard.). 
DISTRIBUTION: Known only from the type locality. 
7. Heliomyces Peckii Murrill, sp. nov. 
Pileus convex to plane, slightly umbonate, becoming depressed around the umbo, trans- 
lucent at the margin, gregarious, 1-2 cm. broad; surface smooth, pruinose to glabrous, striate 
over the lamellae, at least when dry, pallid, tinged with yellow on drying, margin entire, 
concolorous: lamellae rather broad, distant, twice inserted, not interveined, adnate, broad and 
rounded behind, attenuate toward the margin, white, becoming yellowish and very undulate 
on drying: stipe pruinose to glabrous, grooved and enlarged at the apex, slender and equal 
below, pallid or avellaneous, hollow, twisted on drying, whitish at the base, 3~4 cm. long, 1-1.5 
mim. thick. 
‘Type collected on dead wood in British Honduras, 1906, Morion E 
DISTRIBUTION: Known only from the type locality. Dinara tece tse nara ace De Sena 
