TKICHOLOMA. 213 



Agaricus arcuatus, Bulliard, Champ. FT., t. 589, f. 1 ; Cke., 

 Hdbk., p. 39 ; Cke., Illustr., pi. 218A. 



Among grass in pastures, &c. 



Colour and size variable. Allied to T. panaeolum and 

 T. melaleucum ; the former differs in the greyish gills, and 

 the latter in the white flesh. 



Tricholoma oreinum. Fr. 



Pileus about 1 in. across, flesh rather thick, white ; convex 

 then plane, obtuse, even, glabrous, fuscous then livid ; gills 

 rounded behind, free, crowded, plane, up to 1 line broad, 

 white ; stem about 1 in. long, and 1| line thick, with a slight 

 swelling at the base, otherwise equal, whitish, apex with 

 white squamules, solid. 



Agaricus ( Tricholoma) oreinus, Fries, Syst. Myc., i. p. 52 ; 

 Cke., Hdbk., p. 39; Cke., Illustr., pi. 218s. 



On heaths, &c. 



The gills are equally broad up to the margin, beyond 

 which they project, a character that separates this species 

 from T. humilum. (Fries.) 



Tricholoma album. Schaeff. 



Entirely white. Taste acrid. Pileus 3-4 in. across, flesh 

 thick ; convex then expanded, very dry, even, disc sometimes 

 yellowish ; gills emarginate, about 3 lines broad, somewhat 

 crowded, not changing colour ; stem about 3 in. long and 

 | in. thick, attenuated upwards, almost naked, elastic, solid. 



Agaricus album, Schaeffer, t. 256 (slender form); Fries, 

 Icon., p. 39, pi. 43 ; Cke., Hdbk., p. 39 ; Cke., Illustr., pi. 65 

 (too ochraceous). 



In woods. 



Size very variable, sometimes very robust, at others 

 slender. Entirely pure white, sometimes becoming yellowish , 

 especially the disc. Smell weak but taste bitter. (Fries.) 



Tricholoma leucocephalum. Fr. 

 Pure white. Smell strong, pleasant, resembling new- 

 meal. Pileus about 1| in. across, flesh thin, compact, tough ; 

 convex then plane, obtuse, even, moist, glabrous, but covered 

 with pure white silky down when young; margin acute, 

 spreading, glabrous ; gills rounded behind and almost free, 

 orowded thin, quite entire, clear white ; stem up to 2 in* 



