i86 BRITISH Fl'XGI 



C. tumiilosa. — Cap with a fleshy disc, conico-convex, then ex- 

 panded, obtusely umbonate or obtuse, smooth, brownish umber, 

 becoming pale, edge drooping, 1-2 in. across ; gills more or less 

 decurrent or slightly emarginate, crowded, narrow, white, then 

 greyish ; stem downy, pallid, solid, 3-5 in. long. 



Readily known by the densely clustered habit and the umber cap. 

 Gills variable, decurrent or rounded behind, and then suggesting a 

 TricJioloma. 



On the ground in woods. 



C. connata. — Cap fleshy, becoming thin towards the edge, conical, 

 then expanded and wavy, lobed or deformed, smooth, moist, ob- 

 tusely umbonate, white or pallid, becoming clear grey towards the 

 edge, 3-4 in. across ; gills narrow, unequally decurrent ; stem 

 hollow, whitish, twisted. 



Usually growing in dense clusters, the many stems springing 

 from a common tuberous base. Cap sometimes shining white. 



On the ground in damp woods. 



C. pergamena. — Densely tufted. Cap convex, then plane, 

 obtusely umbonate, smooth, even, pallid or parchment-colour, 

 somewhat cartilaginous, 1-2 in. across ; gills broadly adnate, with 

 a decurrent tooth, rather crowded, white ; stem equal, with a 

 cartilaginous cuticle which often cracks up in patches, squamulose 

 at the apex, whitish, 4-5 in. long. 



Readily distinguished by the densely tufted habit, and growing 

 on wood. The cartilaginous stem suggests Omphalia, but the gills 

 are not decurrent. 



On stumps, etc. 



C. opaca. — White. Cap convex, then expanded, umbonate, often 

 depressed round the umbo, wavy, minutely flocculose, opaque ; 

 gills adnate and subdecurrent, closely crowded, white ; stem 

 unequal, somewhat fibrillose, wavy, i|-2^ in. long. 



Differing from C. cerrusata mainly in the umbonate cap. 



In woods. Solitary or tufted. 



C. occulta. — Cap i|-2^ in, across, flesh rather thick at the disc, 

 running thin towards the edge, convex, then plane or depressed, 

 even, smooth, but ^'irgate or streaked, viscid, pallid, smok}^ at the 

 disc, edge \\hitish ; gills -adnate and ver}^ slightly decurrent, 

 narrow, white ; stem i|-2 in. long, equal or slightly expanded 

 into the cap, white, fibrillosely striate, often curved, sohd. 



Known by the viscid cap") and the \'ery slightly or not at all 

 decurrent gills. 



On charred ground. Gregarious. 



C. monstrosa. — Cap rather fleshy, convex and umbonate, at 

 length waved and lobed, white, opaque as if ^\•hitewashed, edge 

 incurved, i|-2| in. across ; gills scarcely rounded behind, but not 

 truly decurrent; rather distant, white or cream-colour ; stem com- 



