316 NORTH AMERICAN FLORA [VoLuUME 9 
spores globose or broadly ellipsoid, 5-7 » long: stipe subcylindric, pruinose, white, solid, 2 cm. 
long, 3—4 mm. thick. 
Type collected on dead bamboo at Moore Town, Jamaica, November 22, 1902, F. S. Earle 546 
(herb. N. Y. Bot. Gard.). ; 
DISTRIBUTION: Known only from the type locality. 
25. Omphalopsis convexa Murrill, sp. nov. 
Pileus convex, not depressed at the center, cespitose, 1 cm. broad; surface glabrous, 
striate, dull-brownish-white, reddish-brown on the disk, margin entire, appressed when young: 
lamellae decurrent, arcuate, broad, subdistant, white: spores narrowly ovoid, pointed at one 
end, smooth, hyaline, 5 X 2 u: stipe slender, equal, curved, smooth, glabrous, dull-reddish- 
brown, 1 cm. long, scarcely 1 mm. thick. 
Type collected on a mossy log in Castleton Gardens, Jamaica, 200 m. elevation, December 14, 
15, 1908, W. A. & Edna L. Murrill 59 (herb. N. Y. Bot. Gard.). 
DisTRIBUTION: Known only from the type locality. 
26. Omphalopsis petasiformis Murrill, sp. nov. 
Pileus hat-shaped, with a large and prominent umbo, solitary, 2 cm. broad, 1 cm. high; 
surface pure-white, glabrous, faintly striate, the umbo faintly straw-colored: lamellae decur- 
rent, distant, broad, thin, ventricose, pure-white: stipe cylindric, equal, smooth, glabrous, 
pure-white, 3 cm. long, 2-3 mm. thick. 
Type collected on the ground under tree ferns at Morce’s Gap, Jamaica, 1500 m. elevation, 
December 29, 30, January 2, 1908-9, W. A. & Edna L. Murrill 706 (herb. N. Y. Bot. Gard.). 
DISTRIBUTION: Jamaica, at elevations of about 1500 m. 
27. Omphalopsis euspeirea (Berk. & Curt.) Murrill. 
Agaricus (Mycena) euspeiveus Berk. & Curt. Jour. Linn. Soc. 10: 285. 1868. 
Agaricus (Omphalia) subpellucidus Berk. & Curt. Jour. Linn. Soc. 10: 286. 1868. 
Agaricus (Omphalia) anthiceps Berk. & Curt. Jour. Linn. Soc. 10: 286. 1868. 
Hiatula caespitosa Berk. & Curt. Jour. Linn. Soc. 10: 293. 1868. 
Omphalia paraguariensis Speg. Anal. Soc. Ci, Argent. 16: 245. 1883. 
Pileus thin, convex, more or less umbilicate, densely cespitose, 1-2.5 em. broad; surface 
glabrous, white, subfuscous at the center, margin striate-sulcate, depressed, often elevated 
with age: lamellae adnate-decurrent, distant, broad, white: spores ellipsoid, smooth, hyaline, 
5 X 34: stipe slender, glabrous, white, pellucid, hollow, dilated at the apex, strigose at the 
base, 2.5-3 cm. long. 
TYPE LOCALITY: Cuba. 
Hasitat: On decayed logs in woods. 
DisTRIBUTION: Cuba, Porto Rico, and Jamaica; also in Paraguay. 
28. Omphalopsis citricolor (Berk. & Curt.) Murrill. 
Agaricus (Mycena) citricolor Berk. & Curt. Jour. Linn. Soc. 10: 285. 1868. 
Mycena citricolor Sacc. Syll. Fung. 5: 263. 1887. 
Pileus small, thin, pellucid, convex, gregarious, 5 mm. broad; surface lemon-yellow: 
lamellae decurrent, few, concolorous: stipe glabrous, filiform, concolorous, 6 mm. long. 
TYPE LocALItTy: Cuba. 
Hawirat: On dead leaves. 
DisTRIBUTION: Cuba and Jamaica. 
29. Omphalopsis myceniformis Murrill, sp. nov. 
Pileus thin, convex, not expanding, solitary, 12 mm. broad ; surface glabrous, dry, stramine- 
ous with a grayish tint, margin striate, satiny, deflexed, entire: lamellae short-decurrent, 
inserted, ventricose, broad, subdistant, white: spores globose, smooth, hyaline, 5-7 p: stipe 
long, tough, curved, smooth, glabrous, pale-reddish-brown, 3 cm. long, 1 mm. thick. 
Type collected in humus in a moist virgin forest in the Tepeite Valley, near Cuernavaca, Mexico 
2100 m. elevation, December 28, 1909, W. A. & Edna L. Murrill 463 (herb, N.Y. Bot. Gard.). : 
DistTRiBuTion: Known only from the type locality. 
