6o AGARICUS. 



Tricholoma. habit which is that of Clitocyhe, by their elastic stem, and by the piletis not 

 behig moist even in rainy weather, a feature which constitutes a departure 

 from the spongy Tricholomata, as well as by their ivhite colour. 



In woods. Frequent. Sept.-Nov. 



Care should be taken not to confound it with various edible species of the 

 same colour. From its acrid taste, which easily distinguishes it, it is perhaps 

 poisonous. Spores 3x6 mk. W.G.S. ; 5-6x2-3 mk. B. Name — albus, 

 white. Schceff. t. 256 (a thin form). Fr. Monogr. i. p. 91. Hy7n. Eur. p. 70. 

 Icon. t. 43. /. I. Berk. Out. p. 105. t. 4. /. 6. C. Hbk. n. 74. Illust. PL 

 65. S. Mycol. Scot. 71. 69. A. leucocephalus Bull. t. 536. Battar. t. 20./. i. 



113. A. leucocephalus Fr. — Wholly white without any yellow- 

 ish tinge. Pileus 4 cent, {i}^ in.) broad, fleshy, thin, tough, con- 

 vexo-plane, obtuse, even, moist, smooth in itself, but ivhejt young 

 covered with shifiing whitish, adpressed, silky, at length separating 

 villous dow7i; margin acute, spreading, smooth ; flesh compact, 

 watery in wet weather. Stem scarcely 5 cent. (2 in.) long, 6 mm. 

 (3 lin.) thick, hollow, fleshy fibrous, but polished externally, some- 

 what cartilaginous, rootijig at the attenuated solid base, twisted, 

 even, smooth. Gills i'ounded-free, crowded, thin, quite entire, 

 shining white. 



Strong odour of neiu meal. Plainly different from A. alhus, allied to A. 

 {Ar7nill.) const rictus, but from its somewhat cartilaginous stem inclining to 

 Colly bio;, just as A. albus does to ClitocybcB, 



In woods among leaves. Bowood, Wilts. Oct. 



Name— A.ev /cos, white, Kt^aX-f], head. Fr. Mo7iogr. i. p. 92. Hy7n. Eur. p. 

 71. Ico7i. t. 43./. 2, not Kro77ibh. B. ^ Br. 7i. 1505. C. Illust. PL 78. 



■^■^ Gills changi7ig colour. 



114. A. acerbus Bull. — Pileus becoming yellow-white, pale- 

 yellowish, then smeared with rufous or fuscous colour, fleshy, 

 convexo-expanded, smooth, moist, somewhat tiger-spotted, the 

 thin margi7i wrinkled-sulcate. Stem solid, obese, becoming light- 

 yellow, squamulose at the apex. Gills emarginate, crowded, 

 pallid then rufescent. 



Large, robust, with an unpleasant odour and bitter taste. The stem is com- 

 monly bulbous, but sometimes attenuated at the base. 



In shady woods. Frequent. Aug.-Sept. 



Margin of pileus involute. Flesh firm, snow-white. Stem squamulose or 

 roughened with small warts at the apex. Bull. Pileus 7.5-10 cent. (3-4 in. ) 

 broad. M.J.B. Spores 4 mk. W.G.S. Name — acerbus, bitter. From the 

 taste. Biill. t. 571. /I 2. Fr. Hy7n. Eur. p. 71. Be7'k. Out. p. 105. C. Hbk. 

 71. 75. Illust. PL 76. S. Mycol. Scot. 7i. 70. Saioid. 6-' S771. t. 48. f. 2, 

 Ventur. t. 38. /. 7, 8. 



