Part 4, 1915] AGARICACEAE 249 
8. Heliomyces rubritinctus Murrill, sp. nov. 
Pileus convex to plane, slightly umbonate when young, entirely subtranslucent, gregarious, 
1-2 cm. broad; surface smooth, glabrous, striate over the lamellae, pallid with a latericeous 
tint which becomes very pronounced on drying, margin entire, concolorous: lamellae distant, 
twice inserted, not interveined, adnexed, of medium breadth for the genus, latericeous when 
dry: stipe smooth, glabrous, pallid or grayish, slender, equal, twisted on drying, at times 
reddish-tinged, 2-3 em. long, 1 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. 
9. Heliomyces decolorans Berk. & Curt. Ann. Mag. Nat. Hist. 
ITT. 4: 295. 1859. 
Pileus slightly irregular, convex to expanded, solitary to gregarious, 2-3 cm. broad; 
surface white, changing to reddish or brownish when dried, deeply sulcate-striate, glabrous, 
rugose: lamellae adnexed to-slightly decurrent, rather broad, distant, unequal, white, changing 
like the surface on drying: stipe central, very slender, horny, glabrous, white, discolored, 2.5-5 
em. long. 
TYPE LocaLity: Alabama. 
Hapirat: On fallen dead branches and leaves, 
DistTRIBUTION: Alabama and Mississippi. 
Exsiccati: Rav. Fungi Car. 5: 7. 
10. Heliomyces angustifolius Murrill, sp. nov. 
Pileus convex to subexpanded, slightly depressed on the disk, subtranslucent except at the 
center, solitary, 3 cm. broad; surface smooth, glabrous, multistriate over the lamellae, pallid 
with darker center, becoming bay or chestnut on drying, margin entire, white to pallid, not 
inflexed on drying: lamellae adnate, narrow, crowded, twice inserted, not interveined, white to 
discolored: stipe cylindric, enlarged at the apex and base, grayish-pruinose, not glabrescent, 
compressed and rigid when dry, 4 cm. long, 1.5-2.5 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. 
11. Heliomyces multifolius Murrill, sp. nov. 
Pileus convex to plane, usually umbilicate, entirely translucent, densely cespitose, 1.5-2 
em. broad; surface smooth, glabrous, multistriate over the lamellae, pallid with a yellowish 
tint, slightly darker at the center, margin very thin, becoming eroded with age: lamellae ex- 
ceedingly numerous, narrow and crowded, interveined, many of them forked, slightly decurrent, 
white: stipe slender, smooth, glabrous, equal, hollow, compressed on drying, 3~4 cm. long, 1-2 
mim, 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. 
12. Heliomyces foetens Pat. Jour. de Bot. 3: 337. 1889. 
Pileus thin, membranous, orbicular, umbonate, cespitose, 1.5-3 cm. broad; surface gla- 
brous, reddish, margin pellucid, lacerate: lamellae adnexed, numerous, very narrow, equal, 
not anastomosing: spores ovoid, smooth, hyaline, 64 u: stipe central, slender, rigid, enlarged 
at the apex, glabrous, slightly striate, 6-8 cm. long, 1-2 mm. thick. 
TyPE LocaLity: Martinique. 
Hasirat: On dead Wood of Prunus occidentalis. 
DIstRIBUTION: Known only from the type locality. 
DOUBTFUL SPECIES 
Agaricus (Hiatula) crenulatus Fries, Nova Acta Soc. Sci. Upsal. III. 1:27. 1851. Col- 
lected by Oersted on the island of San Lucas, on the west coast of Costa Rica. A good 
sketch is to be seen at Copenhagen, but no specimens. 
