Part 2, 1917] AGARICACEAE 87 
Pileus 2 em. broad. 
Pileus 5 cm. broad. ete iia 
Species occurring on the ground. in ; 
ae roa on ra 39. L. Earlei. 
ileus livid-purple. ads 
Pileus murinous or avellaneous. haga 
Stipe 4-5 cm. long. 41. L. murina. 
Stipe 2-3 cm. long. 
Pileus uniformly pale-avellaneous. 42. L. mexicana. 
Pileus avellaneous with fuliginous disk. 43. L. cinchonensis. 
1. Leptoniella albida Murrill, sp. nov. 
Pileus hemispheric to convex-expanded, slightly umbilicate or depressed at the center 
with a little rounded umbo, reaching 2-3 cm. broad; surface finely squamulose, dull or shining, 
white when young, very light creamy-tan at maturity, margin typically not striate, but some- 
times with low, distant ridges; context thin, soft, brittle, the taste woody and slightly bitter; 
lamellae more or less sinuate, sometimes slightly decurrent by a little tooth, about 5 mm. 
wide near the stipe, not crowded, clear-flesh-colored; spores broadly ellipsoid, irregular, de- 
cidedly angular, apiculate, rose-colored, 8-9 X 6p ; stipe smooth, finely granular above, con- 
colorous, tough, distinctly hollow, 3-6.5 cm. long, 1.5-2 mm. thick. 
Type collected in sandy soil in deep shade at Chapel Hill, North Carolina, September 12, 191 
W. C. Coker 1759 (herb. N. Y. Bot. Gard.). . ia aca a 
DISTRIBUTION: Known only from the type locality. 
2. Leptoniella albinella (Peck) Murrill. 
Leptonia albinella Peck, Bull. N. Y. State Mus: 1°: 6. 1888. 
Pileus submembranous, subconic or convex, subumbilicate, 1.2-2.5 cm. broad; surface 
furfuraceous or minutely squamulose, hygrophanous, whitish and striatulate on the margin 
when moist, white and shining when dry; lamellae narrow, crowded, adnexed, white, becom- 
ing incarnate; spores angular, 11-12.5 X 7.5-8.5 »; stipe equal, hollow, glabrous or slightly 
pruinose, whitish, 3.5—5 cm. long, about 2 mm. thick. 
- TYPE LOCALITY: Sandlake, New York. 
Hastirat: In bushy places. 
DIistRIBUTION: Known only from the type locality. 
3.. Leptoniella subserrulata (Peck) Murrill. 
Leptonia subserrulata Peck, Ann. Rep. N. Y. State Mus. 51: 288. 1898. 
Pileus thin, convex or campanulate, umbilicate, 1.5-3 cm. broad; surface grayish-white, 
darker colored and squamulose on the umbilicus, margin obscurely striate; lamellae thin, 
crowded, adnate, at first white, bluish-black and minutely denticulate on the edges; spores 
irregular or angular, 10-11 X 7.5 u, usually containing a single large nucleus; stipe slender, 
rather long, hollow, glabrous, whitish or pallid, 5-7.5 cm. long, about 2 mm, thick. . 
Typr Locality: Gansevoort, New York. 
Hasrrat: On low damp ground in woods. 
DISTRIBUTION: Maine and New York. 
4. Leptoniella assularum (Berk. & Curt.) Murrill. 
Agaricus assularum Berk. & Curt. Ann. Mag. Nat. Hist. III. 4: 290. 1859. 
Leptonia assularum Sacc. Syll. Fung. 5: 709. 1887. 
Pileus campanulate to expanded, umbonate, 4 cm. broad; surface glabrous, virgate, 
white, darker on the umbo, margin striate; lamellae seceding, white to flesh-colored; spores 
irregular; stipe flexuous, subequal, fuliginous, 8 cm. long, 3 mm. thick. i. 
Typx Locality: South Carolina. 
Hasrrat: On decayed wood. 
Distrisution: South Carolina. 
5. Leptoniella transformata (Peck) Murrill. 
Leptonia transformata Peck, Bull. N. ¥. State Mus. 116: 32. 1907. 
Pileus thin, submembranous, slightly convex or nearly plane, often umbilicate, 1-2 cm. 
broad; surface silky-tomentose, dry or slightly moist in wet weather, white, becoming blackish 
