30 THE CHICAGO ACADEMY OF SCIENCES 



Stem somewhat equal, stuffed or hollow, white above the an- 

 nulus, adorned like the pileus below it; annulus slight, evanescent. 



Spores elliptical, 4 to 5 x 3 to 4 /A. Pileus 2.5 to 6 cm. broad; 

 stem 2.5 to 6 cm. long, 2 to 6 mm. thick. 



Woods, frequent. August, September. The stem in our speci- 

 mens is often grayish-flesh-color, contrasting sharply with the 

 white, slightly adnexed lamellae. 



Lepiota metulaespora B. & Br. 



Pileus thin, campanulate or convex, subumbonate, at first 

 with a uniform pallid or brownish surface, which soon breaks up 

 into small brownish scales, the margin more or less striate, often 

 appendiculate with fragments of the veil. 



Lamellae pure white, close, free. 



Stem slender, equal or slightly tapering upward, hollow, 

 adorned with soft floccose scales or filaments, pallid; annulus 

 slight, evanescent. 



Pileus 1.5 to 4 cm. broad; stem 5 to 9 cm. high, 2 to 4 mm. 

 thick. 



Ground in woods, Glen Ellyn. August, September. Spores 

 fusiform, often pointed at one or both ends, 10 to 12 x 4 //,. 



Lepiota americana Pk. 



Pileus rather fleshy, at first ovate then convex or expanded, 

 umbonate, more or less striate on the margin, the cuticle breaking 

 up, except on the umbo, into reddish or reddish-brown appressed 

 scales, white; flesh white. 



Lamellae rather broad, close, free, white, narrower toward the 

 stem and there sometimes anastomosing. 



Stem tapering upward, enlarged at or a little above the base, 

 hollow, white; annulus rather large, but thin and flabby, some- 

 times separating from its attachment to the stem, occasionally 

 evanescent. 



Spores subelliptical, uninucleate, 7.5 to 10 x 5 to 7.5 p, Pileus 



4 to 10 cm. broad; stem 7.5 to 12 cm. high, 4 to 10 mm. thick. 



In grassy places near, Chicago. Sometimes cespitose. 

 Harper. 



Lepiota caepestipes Sow. 



Pileus campanulate or convex, even, save the margin which is 

 usually striate or sulcate, pure white or very slightly brownish 

 only at the disk, covered with large, loose, floccose white scales 

 which are easily rubbed off. 



Lamellae free, pure white, rather broad; flesh thin, white. 



Stem thickened at the base, tapering upwards, slightly en- 

 larged at the insertion in the pileus, white-farinose but with a 

 slight yellowish tint when the mealiness is rubbed off. 



Spores subelliptical, 6 x 8 p. Often cespitose. Pileus 2.5 to 



5 cm. broad; stem 5 to 10 cm. high, 4 to 6 mm. thick. 



