52 NORTH AMERICAN FLORA [Volume 10 



or elliptic scales, margin floccose, distinctly striate-plicate ; lamellae touching the collar, 

 crowded, linear, whitish or pale-stramineous; spores ovoid-ellipsoid, smooth, hyaline, uninu- 

 cleate, 7-9 X 4-5 fx ; stipe slender, strongly bulbous, increasing above, pruinose, shining-isa- 

 belline, fistulose, yellow and floccose at the base, 4 cm. long, about 3-4 mm. thick at the 

 center, the bulb 6-7 mm. thick; annulus superior, fixed, sulfur- yellow, lacerate. 



Type locality: Lincoln, Nebraska. 



Habitat: On the ground. 



Distribution : Known only from the type locality. 



IV. Squamulosae. Pileus appressed-squamulose, not conspicuously striate. 



35. Lepiota coerulescens Peck, Bull. Torrey Club 26: 63. 1899. 



Pileus thin, convex, obtuse or slightly umbonate, 1 . 5-2 cm. broad ; surface whitish, squamu- 



lose, the squamules and the center brownish, the entire surface becoming blue on drying; 



context white, becoming blue on drying; lamellae thin, free, crowded, white, becoming blue 



on drying; spores ellipsoid, smooth, hyaline, 7X5 fi; stipe equal, slender, brownish, 3-5 cm. 



long, 2 mm. thick; annulus membranous, persistent, white, externally tinged with blue when 



dry. 



Type locality: Ohio. 

 Habitat: On the ground. 

 Distribution: Ohio and Missouri. 



36. Lepiota brunnescens Peck, Bull. Torrey Club 31: 177. 1904. 



Lepiota rufescens Morgan, Jour. Myc. 12: 246. 1906. 



Pileus thin, convex or nearly plane, usually obtuse or umbonate, 2-8 cm. broad, the 



entire plant changing to brown when bruised or after 12-24 hours of drying; surface whitish, 



the cuticle soon cracking and forming chestnut-colored squamules except in the center, margin 



j}ften rosy, radiate-rimose at times; context white, taste sweet; lamellae free, at first white, 



crowded, ventricose; spores ovoid, appendiculate, smooth, hyaline, yellowish in mass, 6-8 X 



4—5 /a; stipe equal or slightly enlarged below, white, changing at first to reddish-brown and 



then to brown below the annulus on drying, fibrous to glabrous, hollow, 3-7 cm. long, 2-7 mm. 



thick; annulus median, fixed, usually ample and persistent. 



Type locality: St. Ivouis, Missouri. 



Habitat: Open woods and grassy places. 



Distribution: New York, New Jersey, Ohio, Missouri, and southern California. 



37. Lepiota fuliginescens Murrill, Mycologia 4: 236. 1912. 



Pileus convex to subexpanded, solitary, about 8 cm. broad; surface dry, finely imbricate- 



floccose-scaly, slightly rimose, white with rosy tints, becoming fuliginous on drying; lamellae 



free, distant, narrow, arcuate, white, changing to pale-latericeous on drying; spores regularly 



ovoid, smooth, hyaline, 6 X 4 /i ; stipe long and twisted owing to its struggle through the leaves, 



tapering upward, polished, hollow, colored and changing like the pileus, about 10X1 cm.; 



annulus superior, ample, fixed, white to pale-fuliginous. 



Type locality: La Honda, California. 

 Habitat: On the ground in a redwood forest. 

 Distribution: Known only from the type locality. 



38. Lepiota castanescens Murrill, Mycologia 4: 234. 1912. 



Pileus small, thin, convex to subexpanded, prominently umbonate, 2-3 cm. broad; surface 



dry, densely appressed-fibrillose, white to rose-colored, glabrous and darker-red on the umbo, 



the entire surface changing to castaneous on drying; lamellae free, crowded, narrow, plane, 



white, becoming fumosous on drying; spores ellipsoid, smooth, pointed, strictly hyaline, 



7-8X3-4 m; stipe tapering upward, slender, slightly fibrillose, hollow, about 6 cm. long and 



2-5 mm. thick, white or rose-tinted, changing to castaneous on drying; annulus superior, 



fixed, ample, persistent, white, changing to castaneous on drying. 



Type locality: Seattle, Washington. 

 Habitat: On the ground in woods. 

 Distribution: Known only from the type locality. 



