CLITOCYBE. 421 



Clitocybe fumosa. Pers. 



Pileus 1-3 in. across, fleshy, margin thin ; convex, often 

 gibbous when young, regular or wavy, even, pellicle not 

 separable, glabrous, sooty-brown, soon livid or grey when 

 dry ; gills adnate in regular forms but often decurrent when 

 the pileus is irregular, crowded, distinct, greyish-white from 

 the first ; stem 2-3 in. long, 3-6 lines thick, almost equal, 

 often twisted or curved, glabrous, dingy white, apex mealy, 

 solid, fibrous; spores subglobose, 5-6 /x diam. 



Agaricus fumosus, Persoon, Syn., p. 348 ; Cke., Hdbk., p. 

 51 ; Cke., Illustr., pis. 175 and 645. 



In woods. 



Gregarious, somewhat caespitose, tough, rather cartila- 

 ginous. Known from Cl. elixa by the truly obtuse pileus, 

 which is never virgate, often regular. Smell none. (Fries.) 



Clitocybe tumulosa. Kalchbr. 



Caespitose. Pileus 1-2 in. across, disc fleshy, margin 

 thin; conico-convex then expanded, obtusely umbonate or 

 obtuse, even, glabrous, brownish-umber, becoming pale ; 

 margin drooping ; gills more or less decurrent or slightly 

 emarginate, crowded, narrow, white, then greyish ; stem 

 35 in. long, unequal, usually thicker below, minutely 

 downy, pallid, solid. 



Agaricus (Clytocybe) tumulosus, Kalchbrenner, Hym. Hung. 

 Icon., pi. 5 ; Cke., Hdbk., p. 52 ; Cke., Illustr., pi. 105. 



On the ground in woods. 



Readily distinguished by the densely clustered habit, and 

 the timber pileus. The gills are very variable, sometimes 

 distinctly decurrent, at others rounded behind, and almost 

 resembling a Tricholoma. 



Clitocybe pergamena. Cooke. 

 ensely tufted. Pi] 



Densely tufted. Pileus 1-2 in. across, flesh thick at the 

 disc, thin elsewhere ; pallid like vellum, rather cartilaginous, 

 convex then plane, obtusely umbonate, smooth, even ; gills 

 broadly adnate with a decurrent tooth, 2 lines broad, rather 

 crowded, white ; stem 4-5 in. long, 2-3 lines thick, equal, 

 ascending with a cartilaginous coating which often cracks 

 up in flaps, whitish, squamulose at the apex, solid. 



Agaricus (Clitocybe) pergamenus, Cke., Hdbk., p. 52 ; Cke., 

 Illustr., pi. 643. 



