LEUCOSPORI. 51 



93. A. tumidus Pers. Pileus 7.5 cent (3 in.) broad, cinereous- Tricholoma. 

 livid, variegated with tiger-spots, fleshy, irregularly shaped, bid- 

 late, then undulated when expanded, and at length rimosely in- 

 cised, moist in rainy weather, somewhat shining when dry ; margin 



thin, at first bent inwards, somewhat lobed ; flesh white. Stem 

 7.5 cent. (3 in.) long, 18 mm. (^ in.) thick, solid, fleshy-fibrous, 

 stout, sometimes swollen, smooth, striate, shining white, often at- 

 tenuated into a root at the base. Gills emarginate, 12 mm. (% 

 in.) broad, thicker at the base, somewhat distant, shining white, at 

 length cinereoits-rufescent. 



Somewhat cartilaginous, at length rigid-fragile. Odour and taste weak, not 

 unpleasant. Its dimensions vary very much ; sometimes among the taller 

 mosses the stem is elongated, slender, and the pileus much smaller. Allied to 

 ClitocybcB difformes. 



In moist pine woods. Coed Coch, <Scc. Oct. 



Spores 4x6 mk. W.P. Name tumidus, swollen. Pers. Syn. p. 350. 

 Fr. Monogr. i. p. 74. Hym. Eur. p. 62. S. Mycol. Scot. Supp. Scot. Nat. vi. 

 p. 213. Krombh. t. 72. f. 1-5. C. Illust. PL 93. 



Var. Keithii Phill. & Plow. This differs from the type in its 

 cinereo-rufescent pileus, less turgid, dirty-white stem, which has 

 brownish innate fibres, and in being tinged with red, especially 

 near the base. 



In some of its characters it agrees with A. sudus Fr. , from which it differs 

 in its undulating pileus, distant gills and often rooting stem. The whole plant 

 is fragile, the gills have a cinereous tinge, usually at length becoming rufescent. 

 It frequently has a powerful odour of new meal, and is intermediate between 

 A. sudus and A. tumidus, but is nearer the latter. Grevillea, vol. x. p. 65. 



94. A. murinaceus Bull. Wholly becoming cinereous. Pileus 

 fleshy, thin, campanulate then expanded, silky, rimosely scaly and 

 streaked. Stem stuffed, stout, variegated with minute squamules. 

 Gills broad, distant, undulated, cinereous. 



Strong-smelling, large, robust, but fragile. Formerly referred to Hygrophorus 

 nitrosus, from which it is very different, although both species agree in the 

 alkaline odour. 



In open woods and pastures. Rare. Aug.-Sept. 



Pileus ii cent. (4^ in.) across, at first campanulate, slightly umbonate, 

 then expanded, thin, firm, but very brittle, mouse-coloured, cracked and vir- 

 gate, silky, not the least viscid; flesh white. Stem.y.s cent. (3 in.) high, 2.5 

 cent, (i in.) thick at the top, cracked and streaked, silky, with minute black 

 scales, solid but fibrous, not the least stuffed or hollow. Gills very broad, un- 

 dulate, distant, having a tendency to become forked and anastomosing, brittle, 

 often marked with raised lines, cinereous, powdery, interstices slightly veined, 

 edge at length black. Taste bitter, unpleasant; odour not nitrous. M.J.B. 

 The plant which I have gathered during several seasons corresponds exactly 



