AGAEICUS. 413 



Agaricus (Psalliota) arvensis, Schaeffer, t. 310, 311; Cke. r 

 Hdbk., p. 193; Cke., Illustr., pi. 523. 



Agaricus Georgii, Sow., t. 304. 



In pastures, &c., often in rings. Smell strong and not 

 pleasant as in A. campestris. 



Pileus 4-18 in. broad, white stained with yellow, convex, 

 very thick, firm and tough, quite smooth or clothed with 

 broad tawny more or less concentric adpressed scales ; flesh 

 yellowish when cut, juice yellow. Gills adnate (free, Grev.), 

 broad, numerous, white or very pale flesh-colour, at length 

 dark purplish-brown. Stem 2-5 in. high, 1-2 in. thick, 

 firm, the centre loose and web-like ; when bruised yellow, 

 especially below. Distinguished from A. campestris by the 

 almost white gills and the yellow stains when bruised. It 

 grows to an enormous size. (Berk.) 



Flesh white, unchangeable, gills for a long time pallid 

 dry, not becoming reddish during the middle stage, not 

 deliquescent. (Fries.) 



Far. villaticus, Brond. 



Grows to a very large size, pileus covered with brownish 

 scales. Cke., Illustr., pi. 585. 



Far. purpurascens, Cke. 



Much smaller and more slender than the typical form ; 

 pileus even, smooth, tinged with purple that is deepest at 

 the disc. Cke., Illustr., pi. 584. 



Agaricus silvaticus. Schaeff. 



Pileus 3-4 in. across, campanulate, then expanded, gibbous, 

 the margin sometimes upturned, fibrillose or squamulose, 

 brownish in the centre becoming paler towards the margin, 

 flesh thin, whitish or tinged with brown; gills free, crowded, 

 about ^ in. broad, rather thin, dry, reddish, then brown ; 

 stem 46 in. long, ^- in. thick, equal, straight or curved 

 towards the base, smooth, even, whitish, distinctly hollow, 

 ring superior, simple, persistent ; spores brownish tinged 

 with purple, elliptical, apiculate, 7 x 4 p., 



Agaricus silvaticus, Schaefier, Icon., t. 242; Cke., Hdbk., 

 195; Cke., Illustr., pi. 530. 



In woods. Distinguished from all the varieties of Agaricus 

 campestris by the elongated hollow stem and the brownish 



