Part 2, 1917] AGARICACEAE 95 
phyllous; spores angular, irregular, 10-13 X 7-8 uw; stipe cylindric, glabrous, subpruinose above, 
slightly paler than the pileus, hollow, 4 cm. long, 2 mm. thick. 
TypPx LocaLity: El Yunque mountain, Cuba. 
Hasirat: On the ground in woods. 
DistRIBuTION: Known only from the type locality. 
\ 
40. Leptoniella hypoporphyra (Berk. & Curt.) Murrill, Mycologia 
3: 272. 1911. 
Agaricus hypoporphyrus Berk. & Curt. Jour. Linn. Soc. 10: 289. 1868. 
Leptonia hypoporphyra Sacc. Syll. Fung. 5: 713. 1887. 
Pileus thin, depressed, 2.5 cm. broad; surface glabrous, shining, fuscous, margin striate; 
lamellae broad, livid-purple; spores angular, 7-9 4; stipe slender, elongate, subfuscous, dilated 
at the apex, 4°cm. long, 1.5 mm. thick. 
Tyre LocALity: Cuba. 
Hasirar: In woods. 
DistRisution: Cuba, Guadeloupe, and Honduras. 
41. Leptoniella murina Murrill, sp. nov. 
Pileus small, thin, convex to subexpanded, solitary, 2 cm. broad; surface very smooth, 
glabrous, not striate, uniformly murinous, margin entire, concolorous; lamellae adnexed, 
attenuate at both ends, narrow, distant, rosy-isabelline, entire and concolorous on the edges; 
spores globose, somewhat angular, apiculate, uniguttulate, rose-colored, 7-9 u; stipe very 
slender, smooth, glabrous, slightly enlarged at the apex, murinous, 4-5 cm. long, 1-2 mm. 
thick. 
Type collected on dead wood in woods at Orizaba, Mexico, January 10-14, 1910, W. A. & Edna 
L. Murrill 811 (herb. N. Y. Bot. Gard.). 
DISTRIBUTION: Known only from the type locality. 
42, Leptoniella mexicana Murrill, Mycologia 3: 273. 1911. 
Leptonia mexicana Murrill, Mycologia 4: 332. 1912. 
Pileus convex to expanded, umbilicate, gregarious, 1.5 cm. broad; surface smooth, silky- 
fibrillose, pale-avellaneous, margin thin, fragile; lamellae adnate, broad, distant, heterophyllous, 
pale- ashy-gray with a slight rosy tint; spores polygonal, uninucleate, 7 X 4.5—-5 y; stipe slightly 
larger below, concolorous, glabrous, cartilaginous, 2.5 cm. long, 1.5 mm. thick. 
TyPE LOCALITY: Orizaba, Vera Cruz, Mexico. . 
Hasitat: On the ground in humus in a coffee plantation. 
DistRiBuTION: Known only from the type locality. 
43. Leptoniella cinchonensis Murrill, Mycologia 3: 273. 1911. 
Leptonia cinchonensis Murrill, Mycologia 4: 332. 1912. 
Pileus thin, irregular, convex, umbilicate, gregarious, 2-2.5 cm. broad, less than 1 cm, 
high; surface dry, striate, avellaneous, fuliginous at the center, margin lobed; lamellae adnate, 
rather broad and distant, pale-russet; spores angular, uninucleate, 10-12 X 7-9 y; stipe cyl- 
indric, smooth, fumosous, slightly tapering upward, 3 cm. long, 2.2 mm. thick. 
Type LocaLiry: Cinchona, Jamaica. 
Hasrrat: On the ground on a shaded bank. : 
DISTRIBUTION: Known only from the type locality. 
DovuBTFUL AND EXCLUDED SPECIES 
Leptonia aethiops (Fries) P. Karst. Bidr. Finl. Nat. Folk 32: 274. 1879. (Agaricus 
aethiops Fries, Epicr. Myc. 152. 1838.) Reported from New Jersey by Ellis. ; 
Leptonia asprella (Fries) Quél. Champ. Jura Vosg. 89. 1872. (Agaricus asprellus Fries, 
Syst. Myc. 1: 208. 1821.) Reported from New England, New York, and Ohio. ; A number 
of specimens at Albany from New York and Massachusetts have been compared with material 
from Bresadola and found to be different. ; 
Leptonia chalybea (Pers.) Gill. Champ. Fr. 413. 1876. (Agaricus chalybeus Pers. Syn. 
