38 AGARICACE^: Tricholoma 



110. T. tumidum Gill, (tumidus, swollen) a b. 



P. irregular, often cracked, ashy-livid; mid. darker. St. often 

 swollen and attenuate below, white, often red-tinged within. 



Taste and odour weak, not unpleasant. Woods, pine, moist places. Oct.- 

 Nov. 3i X 3f X f in. Var. Keithii Sacc. (after the Rev. Dr. J. Keith) 

 the whole plant becomes partially rufescent. 



111. T. myirinaeeum Gill, (from its mouse-colour; mus, a mouse) 



a b c. Ashy- or lilac-greyish. 

 P. cracked, streaked grey-silky-scaly; sc. sometimes blackish. 



St. more or less scaly like P. G. grey. 

 Taste very disagreeable, bitter ; odour strong, unpleasant, sometimes nitrous. 



Open woods and pastures ; rare. Aug.-Nov. 4^ X 3^ X f in. Must not 



be confounded with 1244. 



Ilia. T. hordum Que'l. (perhaps from hordeum, barley, on account 



of the hard substance). 



P. subumbonate, soon cracking, in dry weather squarrose, mouse- 

 grey ; mid. darker. St. glabrous, whitish, shaded greyish. G. 

 subdistant, white to greyish. 

 Taste mild ; odour none. Under beeches. 3^ X 4 x f in. 



112. T. virgatum Gill, (from the streaked pileus ; virga, a stripe) a c. 

 P. pale ashy-grey, finely-streaked black-fibrillose. St. subbulbous. 



G. crowded, becoming hoary. Flesh cinereous-whitish. 

 Usually solitary. Taste when young very bitter, becoming tasteless ; odour 

 usually none, sometimes sweet like melilot. Woods, mixed, oak, pine. 

 Aug.-Oct. 3| x 3f X \ in. 



112a. T. elytroides Karst. (from the appearance of the pileus, like 

 the wing-cases of certain beetles ; Gr. elutron^ a beetle's wing- 

 case, eidos, appearance) a b. 



P. expanded, obtuse, scabrous, with minute linear black-brown 

 scales on a yellowish or pale brown ground, caused by the 

 cracking of the cuticle. St. soft, densely brownish-fibrillose. 

 G. ashy-grey or brownish-white. Flesh white. 

 Odour faint of new meal. Oct. 3^ X 3^ X f in. Compare 104. 

 112b. T. opieum Gill, (opicus, clownish) a. 



P. somewhat thin, obtusely umbonate, even, soon squamulose, at 

 length unusually upturned and split, very dry, becoming minutely 

 squamulose, grey. St. stuffed, fibrillose, becoming almost 

 glabrous, pallid to greyish. G. arcuato-adfixed, somewhat 

 thick, hoary. Flesh greyish. 



Odour none. Woods, pine, amongst moss. l x 3 X \ in. Must not be 

 confounded with 103, which smells strongly of soap. 



d. Sericellce. 



113. T. sulphureum Quel. (from its sulphur-colour) a b c. 



P. sulphur-yellow, sometimes rufescent-clouded. St. striate, 



sulphur. G. light sulphur. Flesh sulphur. 

 Gregarious. Probably poisonous. Odour strong and penetrating of gas-tar, 



fetid, like Hemerocallis flava, sometimes pleasant. Woods, mixed ; 



common. Aug.-Nov. 3^ X 4 X in. 



