48 NORTH AMERICAN FLORA [Volume; 10 



smooth, hyaline, 4-5 \x long ; stipe slender, equal, concolorous, rough with a granular mealiness, 

 about 2 cm. long and 1 mm. thick; annul us 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 /z,* 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) Qu£l. Champ. Jura Vosg. 210. 1872. 



A garicus 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 fj,; 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 

 f umosous on drying ; spores oblong-fusiform, smooth, hyaline, 1 2 X 7 ju ; 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. Sci. 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 #; 

 stipe equal, whitish, minutely silky at the apex, squamulose below, narrowly fistulose, 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. Sci. 3: pi. l,f. 1. 



20. Lepiota ecitodora Atk. Jour. My c. 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 p; 



