182 FUNGUS-FLORA. 



stem 3-4 in. long, very hard and solid, base ovately bulbous 

 and 3-4 in. thick, brick-red, apex constricted, 2 in. thick, 

 whitish ; spores broadly elliptical, 6 X 4 /*. 



Agaricus (Tricholoma) colossus, Fries, Epicr., p. 38; Cke., 

 Hdbk., p. 26 ; Cke., Illustr., pi. 87. 



In fir woods. 



Inodorous. Eeadily known by its large size, and by the- 

 flesh becoming red when broken. 



The following form or variety is published by Berkeley 

 and Broome, Ann. Nat. Hist,, 1871, p. 3, no. 1190. 



Pileus about 4 in. across, irregularly lobed and undu- 

 lated, minutely scaly, grey ; stem about 2 in. high, thicker 

 upwards, buff, yellow at the base ; gills rather wide, 

 pallid. Smell strong, like that of cheese. Under an elm. 

 (B. & Br.) 



Tricholoma acerbum. Bull. 



Taste bitter. Pileus 3-4 in. across, flesh thick in the 

 centre, thin elsewhere, margin at first strongly involute, 

 rugulose or pitted, becoming straight with age, viscid when 

 moist, smooth, convex, then almost plane, whitish then pale 

 testaceous with yellow tinge ; gills rather narrow, crowded, 

 emarginate, creamy then pale rufous ; stem 2-3 in. long, 

 | in. thick, solid, pale, apex squamulose ; spores subglobose, 

 56 //. diameter. 



Agaricus (Tricholoma} acerbus, Bull., t. 571, f. 2; Cke., 

 Hdbk., p. 26 ; Cke., Illustr., t. 76 (poor). 



In woods. Taste bitter. Distinguished in the young 

 stage by the strongly involute margin of pileus and squamu- 

 lose apex of stem, later by the plane pileus, rusty gills and 

 stem as before. 



Tricholoma nictitans. Fr. 



Pileus 1|-2| in. across, flesh thin, white; convex then 

 expanded, obtuse, even, glabrous, viscid, yellowish, disc 

 darker ; gills rounded behind and adnexed, but not with a 

 decurrent tooth, crowded, rather broad, somewhat ventricose, 

 yellow, spotted with reddish spots when old; stem about 

 3 in. long, in. thick, dry, slightly scaly at the apex, pale 

 yellow, solid, equal or attenuated upwards, base truncate ; 

 tpores elliptic, 7-8 X 5 p.. 



