160 THIRTY-FIFTH REPORT ON THE STATE MUSEUM. 
wounded. ‘The striations of the margin vary ir different plants, being 
sometimes distinct, sometimes obscure. 
I have placed this species in the tribe Annulosi because of its rela- 
tion to -A. cepestipes. It has also a close relation to the Proceri and 
might with almost equal propriety be placed among them. The an- 
nulus both in this and the next species ceresionally loosens from the 
“stem and becomes a movable ring. 
AGARICUS NAUCINOIDES, Pk. 
Smooth Agaric. 
Pileus at first subglobose, then convex, fleshy, soft, smooth, rarely 
slightly squamulose or granular-mealy, white or smoky-white, flesh 
white ; lamelle rather broad, close, free, white, slowly changing to a 
dingy pinkish-brown or smoky-brown color with age or in drying; stem 
smooth or silky-fibrillose, equal or shghtly thickened at the base, hol- 
low, sometimes stuffed with webby filaments, white or smoky-white, 
annulus thick, persistent, white; spores subelliptical, uninucleate, 
.0003’ — .0004’ long, .0002’ — .0003’ broad. 
Plant 2’ — 4’ high; pileus 1.5’ — 3.5’ broad; stem 3" — 5” thick. 
Grassy grounds in pastures, fields and roadsides). Common. Sep- 
tember—November. 
This is a beautiful as well as a useful Agaric. It is very regular and 
symmetrical in shape and generally pure white in color. Its surface 
is usually very smooth and even, though occasionally a slight meali- 
ness or granular roughness is developed on the disk and still more 
rarely a few minute scales appear. In a single instance I have seen the 
surface cracked into rather large thick scales, a result probably of un- 
usually wet weather. The white color sometimes gives place to a dingy 
smoky-white or ashy hue. The lamelle are at first white or cream- 
colored, but when old or dried they become smoky-brown or brown- 
ish tinged with pink. The stem is hollow, but, as in many other 
hollow-stemmed Lepiotz, the cavity often contains webby or cottony 
filaments, especially when young. The plant occurs late in the season 
and is most often found in grassy pastures and in lawns, though 
sometimes it occurs in corn fields and other cultivated grounds. It is 
liable to be confused with white forms of the common edible mush- 
room, A. campestris, but in that species the lamelle at first have a 
beautiful pink or flesh-colored hue which soon changes to a blackish- 
brown color. It also bears some resemblance to A. /evis and to A. 
cretaceus, but the former has flesh-colored and the latter brown spores. 
It is, however, more nearly related to its’ white-spored allies, 
