NATURAL HISTORY SURVEY 99 



On dung heaps in a wooded pasture, River Forest. June. 

 When young, tan-flesh-color, globose, afterwards parabolic- 

 hemispherical, strongly umbonate and cinereous, the umbo 

 darker. Spores large, fusiform, 15 to 18 x 9 to 12 p. 



Panaeolus digressus Pk. 



Pileus hemispherical or convex, glabrous, bay-red. 



Lamellae very broad, plane, distant, adnate, purplish-black 

 with a white edge. 



Stem short, floccose-flbrillose towards the base, striate at 

 the apex, hollow, a little paler than the pileus. 



Spores broadly ellipsoid, 12 to 15 x 10 ft. Pileus 8 to 12 mm. * 

 broad; stem about 2.5 cm. long, 2 mm. thick. 



Growing in manure near a barn. Wheaton. September, 

 1904. 



Our plants agree with the description except that the stem is 

 2.5 to 4 cm. long, and the spores 12 x 7 to 8 /w,. 



The pileus, which is bay-red when moist, becomes paler as the 

 plants part with their moisture. It is smooth, not polished, 

 not striate and the edge is here and there dotted with flecks of 

 the white veil. The lamellae extend to the margin of the pileus, 

 a peculiarity that has been noted in only one other American 

 species. The stem is rigid, gome what tough, not polished. Re- 

 ported heretofore only from California. 



Panaeolus papilionaceus Bull. 



Pileus subhemispherical, sometimes subumbonate, smooth, or 

 with the cuticle breaking up into scales, whitish-gray, often 

 tinged with yellow. 



Lamellae very broad, attached, becoming black. 



Stem slender, firm, hollow, pruinose above, whitish, sometimes 

 tinged with red or yellow, slightly striate at the top. 



Pileus 12 mm. to 3.5 cm. broad; stem 7.5 to 12.5 cm. high. 



On dung and rich soil. Chicago. June, 1889. Wyrick. The 

 species is said to be poisonous. 



Panaeolus fimicola Fr. 



Pileus fuliginous-gray when moist, becoming clay-hoary when 

 dry, slightly fleshy, campanulate then convex, obtuse, even, 

 smooth, opaque, marked round the margin with a narrow fuscous 

 zone, and inside this with a white one; flesh thin, grayish. 



Lamellae adnate, slightly rounded, somewhat ventricose, 

 broad (almost semi-ovate), variegated gray and fuliginous. 



Stem fistulose, soft, fragile, equal, becoming dingy-pale, 

 obsoletely slightly silky-striate r white-pruinose at the apex. 



Pileus 2 to 4 cm. broad; stem 5 to 10 cm. high. 



On horse dung in a barnyard. Wheaton. June. 



