52 AGARICUS. 



Tricholoma. with the figure of Bulliard and with Berkeley's description. The stem is fre- 

 quently twisted, slightly flattened, with deep longitudinal channels. The 

 figure in Cooke's ' Illustrations ' does not represent Bulliard's plant. Spores 

 5 x 4 ink. W.G.S. Name nms, a mouse. Mouse - coloured. Bull. t. 520. 

 Fr. Hym. Eur. p. 62. B. &= Br. n. 261. Berk. Out. p. 100. C. Hbk. n. 56. 

 Illust. PL 49. ? S. Mycol. Scot. n. 55. Sow. t, 106. 



95. A. virgatus Fr. Pileus grey-cinereous, the umbo often 

 darker, fleshy, but not thick, rigid, convex then flattened, some- 

 what umbonate, very dry even in rainy weather, smooth, becoming 

 even, but elegantly streaked with fine black lines (innate fibrils) ; 

 broken up into squamules when old ; margin straight and at the 

 first naked ; flesh thin, cinereous-whitish. Stem 7.5 cent, (sin.) 

 and more long, 12 mm. ()4 in.) and more thick, solid, firm, equal 

 or tuberous at the very base, striate, commonly smooth, sometimes 

 squamulose, 'whitish, white within. Gills broadly emarginate, 6- 

 10 mm. (3-5 lin.) broad, crowded, becoming hoary. 



Most distinct. Inodorous ; taste bitter like gall when young, but flavourless 

 when old. Var. major (in beech woods) pileus black-squamulose, the scales 

 separating. 



In mixed wood. Forres, c. Aug.-Oct. 



Spores sphaeroid or subsphaeroid, 6-8x5-6 mk. K. ; 5-7x4-5 mk. IV. P. ; 

 ellipsoid-sphaeroid, punctate, 8-10 mk. C.B.P. ; ovoid, dotted, 6-7 mk. Q. 

 Name virga, a twig or stripe. Streaked. Fr. Monogr. i. p. 75. Hym. Eur. 

 p. 62. Icon. t. 34. f. i. B. & Br. n. 1504. S. Mycol. Scot. n. 56. C. 

 Illust. PL 167. 



IV. SERICELLA. 

 * Gills broad, rather thick, somewhat distant. 



96. A. sulphureus Bull. Pileus i-io cent. (^-4 in.) broad, 

 dingy or rufescent sulphur-yellow, fleshy, at the first somewhat 

 globose, soon convexo-plane, somewhat umbonate, at length de- 

 pressed, unequal, at the first slightly silky, soon becoming smooth 

 and even. Stem 5-10 cent. (2-4 in.) long, 6-8 mm. (3-4 lin.) and 

 more thick, stuffed, somewhat equal but often curved, rather 

 smooth, striate, sulphur-yellow, of the same colour and fibrous 

 within. Gills adfixed, narrowed behind, arcuato-emarginate, rather 

 thick, distant, distinct, brighter sulphur-yellow than the pileus. 



Gregarious ; very variable in dimensions ; odour strong, stinking. 



In mixed woods. Common. Sept.-Nov. 



Odour like that of gas-tar or Hemerocallis flava. M.J.B. Probably a dan- 

 gerous species. Spores 4-5 x 2-3 mk. B. Name sulphur, brimstone. Sul- 

 phur-coloured. Bull. t. 168. Fr. Monogr. \. p. 76. Hym. Eur. p. 63. Berk. 

 Out. p. 102. t. 4. /. 4. C. Hbk. n. 62. Illust. PL 62. S. Mycol. Scot. n. 

 57. Sow. t. 44. FL Dan. t. 1910. f. i. Gonn. & Rab. t. 13. f. 2. Paul. t. 

 8S-/. 3, 4- 



