North American Flora: Agaricales, Agaricaceae (Vol. 10 ... - MykoWeb

48 NORTH AMERICAN FLORA [VOLUME 10
smooth, hyaline, 4-5 n long; stipe slender, equal, concolorous, rough with a granular mealiness,
about 2 cm. long and 1 mm. thick; annulus wanting.
TYPE LOCALITY: Lake Pleasant, New York.
HABITAT: On the ground under bracken ferns.
DISTRIBUTION : Known only from the type locality.
ILLUSTRATIONS: Ann. Rep. N. Y. State Mus. 28: pi. l,f. 1-3.
16. Lepiota petasiformis Murrill, Mycologia 4: 232. 1912.
Pileus thin, hat-shaped, with prominent conic umbo, scattered or gregarious, 1.5-2.5 cm.
broad; surface dry, rosy-isabelline, or about the color of the back of the hand, covered with an
abundance of fine powder; lamellae free, subdistant, rather broad, white; spores ellipsoid,
smooth, hyaline, minute, 3.5X2/*; stipe slender, tapering upward, clothed with powder like
the pileus, reaching 6 cm. long and 2-3 mm. thick; veil fugacious, not forming an annulus.
TYPE LOCALITY: Seattle, Washington.
HABITAT: In humus in woods.
DISTRIBUTION: Washington.
17. Lepiota seminuda (Lasch) Quel. Champ. Jura Vosg. 210. 1872.
Agaricus seminudus Lasch, Linnaea 3: 157. 1828.
Pileus very thin, campanulate to expanded, umbonate, 2-3 cm. broad; surface floccose-
mealy, at length naked, whitish or pinkish, the margin appendiculate with the torn veil; lamel-
lae rather narrow, white, reaching the stipe; spores ovoid, 3-4X2.5 ¡i\ stipe hollow, slender,
farinaceous, 3-5 cm. long, about 2 mm. thick.
TYPE LOCALITY: Brandenburg, Germany.
HABITAT: On the ground in woods.
DISTRIBUTION: Eastern United States; also in Europe.
18. Lepiota fumosifolia Murrill, Mycologia 4: 233. 1912.
Pileus convex, not umbonate, gregarious, 3 cm. broad; surface dry, white with isabelline,
powdery scales, the center isabelline; lamellae free, broad, rather crowded, white, becoming
fumosous on drying; spores oblong-fusiform, smooth, hyaline, 12X7 M; stipe equal or tapering
upward, cylindric, smooth, white, furfuraceous, pale-avellaneous below, 6 cm. long, 6 mm. thick;
veil soon breaking into fragments which cling to the margin and stipe.
TYPE LOCALITY: Seattle, Washington.
HABITAT: On the ground in woods.
DISTRIBUTION : Known only from the type locality.
19. Lepiota cyanozonata Longyear, Rep. Mich. Acad. Sei. 3: 57.
1902.
Pileus thin except at the disk, conic-convex to expanded, broadly umbonate, 1-1.8 cm.
broad; surface cream-colored or pinkish-white with a narrow zone of light-blue near the margin,
brownish-tan when dry, fibrillose when young, soon becoming glabrous, slightly uneven on
the margin; context whitish, becoming brownish when bruised; lamellae free, scarcely crowded,
thin, soft, whitish, becoming dingy-brown on drying; spores globose, smooth, hyaline, 6-8 n\
stipe equal, whitish, minutely silky at the apex, squamulose below, narrowly fistulöse, 2-3
cm. long, 2 mm. thick; annulus delicate, fibrous, usually evanescent.
TYPE LOCALITY: Leslie, Michigan.
HABITAT: Decaying sticks on the ground in woods.
DISTRIBUTION: Known only from the type locality.
ILLUSTRATION: Rep. Mich. Acad. Sei. 3: pi. l,f. 1.
20. Lepiota ecitodora Atk. Jour. Myc. 8: 115. 1902.
Pileus convex, 2 cm. broad; surface pale-lavender, minutely scaly; context thin, white,
with fetid odor resembling that of eciton ants; lamellae rounded behind, narrow in front,
3 mm. broad, white tinged with yellow; spores cylindric, smooth, hyaline, 9-11X2-2.5 ¡i;