Report of tee Botanist. 77 



Agaricus (Pluteus) sterilomarginatus Peclc. 



Pileus broadly convex or expanded, with a slight oppressed 

 tomentnm, white with a faint pinkish tin^e, the thin margin 

 exceeding the kmelhTe ; lamellae close, subventricose, free, minutely 

 eroded on the edge, tapering outwardly, pale flesh-color ; stem 

 short, equal, solid, smooth, sometimes curved, whitish ; spores sub- 

 globose, angular, with a central nucleus, .00025'' in diameter. 



Plant 1' high, pileus 6"-12" broad, stem .5" thick. 



Rotten logs and sticks in woods. Portville. September. 

 The pileus is sometimes cracked, and then it has the appearance 

 of being coated with a thin, scaly paste. 



Agaricus (Pholiota) albocrenulatus Peck. 



Pileus fleshy, Arm, convex or campanulate, subumbonate, viscid, 

 rough with dark-brown or blackish floccose scales, yellowish- 

 brown ; lamellse broad, subdistant, emarginate, white-crenulate on 

 the edge, grayish, then ferruginous ; stem firm, equal or slightly 

 tapering upward, sometimes curved, stuffed or hollow, squamose 

 and pallid below the evanescent ring, white and slightly furfurace- 

 ous above ; spores subelliptical, .00045' long, .00025' broad. 



Plant 3-5' high, pileus 2-3' broad, stem 3"-5" thick. 



Mossy base of maple trees in woods. Adirondack Mts. July 

 and August. 



This is a large species, quite rare and somewhat variable. I 

 have never been able to find more than one or two plants in a 

 place. The scales of the pileus sometimes disappear, leaving the 

 surface mottled with dark-colored spots. The spores are subacute 

 at each end and the curvature of one side is greater than that of 

 the other. Under a lens the lamellae appear to be beaded on the 

 edge with minute milky globules. 



Agaricus (Pholiota) Acericola Peck, 



Pileus thin, except on the disk, broadly convex, glabrous, rugose- 

 reticulated or corrugated, hygrophanous, yellow ; lamellae close, 

 emarginate, grayish, then ferruginous-brown ; stem equal or tliick- 

 ened at the base, hollow, fibrillose-striate, white; annulus large, 

 membranaceous, persistent, deflexed, usually stained by the spores 

 which are elliptical, .00035' long, .00025' broad. 



Plant 3'-4:' high, pileus 2-3' broad, stem 3'-5" thick. 



Mossy trunks of maple trees in woods. ^N^orth Elba. August. 



The large flabby annulus and lacunose pileus enable this species 

 to be easily recognized. 



