Report of the State Botanist. 157 



tinguished by its more strigose erect scales, its short but stouter bulb- 

 ous stem, broader pileus and narrower spores. It is apparently very 

 rare, having been detected only in the locality here given. 



Agaricus alluviinus, Ph., n, sp. 



Alluvial Agaric. 



Pileus thin, convex or plane, sometimes reflexed on the margin, 

 white, adorned with minute pale-yellow hairy or fibrillose scales; lam- 

 ellae thin, close, free white or yellowish ; stem slender, fibrillose, 

 whitish or pallid, slightly thickened at the base, annulus slight, sub- 

 persistent, often near the middle of the stem; spores elliptical, -00025' 

 — 0003' long, -00016' — 0002' broad. 



Plant 1'— 2' high; pileus -5'— 1' broad; stem 1"— 1-5" thick. 



Alluvial soil, among weeds. Albany. July. 



In the fresh plant the scales are of a pale-yellow or lemon color, but 

 in drying they and the whole pileus take a deeper rich yellow hue. 

 The annulus is generally remote from the pileus, sometimes even be- 

 low the middle of the stem. 



Agaricus metul^esporus, B. and Br, 



Long-spored Agaric. 



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 close, free, white; stem slender, 

 equal or slightly tapering upward, hollow, adorned with soft loose 

 floccose scales or filaments, pallid, annulus slight, evanescent; spores 

 long, subfusiform, -00055' — 00075' long, -00025' — 0003' broad. 



Plant 2'— 3-5' high; pileus -5'— 1 -5' broad ; stem 1"— 2" thick. 



Woods. Adirondack mountains. August and September. 



This species occurs with us in the same localities as A. felinus, 

 which it very much resembles in size, shape and general characters, 

 differing only in color, the striate margin of the pileus and the character 

 of the spores. Both were at first taken to be forms of A. clypeolarius, 

 and were included in the description of that species in Report 23, p. 

 72. Judging from the published descriptions of A. clypeolarius, it is 

 probable that in Europe also it has been made to include forms which 

 will yet be considered distinct species. In Epicrisis it is said to " vary 

 wonderfully in size and color," and in the Hand-book of British 

 Fungi the pileus is said to be " white, yellow, pink, rufous, brown, 

 etc." In Icones Selectae, Fries figures what he considers the typi- 



