CLASSIFICATION 351 



*** Cap with glistening particles or scurfy ; gills usually fixed 

 to a collar round the stem ; ring absent. 



C. domesticus. — Cap i|-2 in. across, ovate, then bell-shaped, 

 scurfy, pale grey, disc brown, grooved ; gills becoming blackish 

 brown ; stem 2-3 in. long, white, silky. 



Very brittle, often tufted. Gills ruddy when young. 



On wet, rotten wood, damp carpets, walls, etc. 



C. stercorarius (PI. XXV, fig. 2). — Cap i-i| in. broad when 

 expanded, densely covered with white, glistening meal, striate ; gills 

 black ; stem at first ovate, then elongating to 3-5 in., white. 



Differs from C. niveits in larger size, and in the cap being covered 

 with glistening meal, and not down. 



On dung and manured ground. 



C. ephemerus. — Cap up to | in. across, expanding and splitting, 

 groo^•ed, scurfy, disc elevated, rufescent ; gills narrow, blackish ; 

 stem up to 2h inches long, smooth, whitish, pellucid. 



Distinguished from C. plicatilis by the disc being prominent, and 

 not depressed. Very fugacious. 



On dunghills, manured ground, etc. 



C. sociatus. — Cap up to i| in. broad when expanded, grooved, 

 mealy, brown, then pale, disc umber, at length depressed ; gills 

 greyish black ; stem about 2 in. long, smooth, white. 



Damp ground, on walls, etc. 



C. plicatilis. — Cap up to i in. across, ovate-C5dindrical, becoming 

 flat, edge splitting and becoming upturned, almost smooth, brown, 

 then grey, disc dark and becoming depressed ; gills greyish black ; 

 stem 2-3 in. long, smooth, white. 



Known by the deepl}^ grooved cap becoming flat, and the brown, 

 sunken disc. 



Common among short grass. 



C. velox. — Cap obovate, striate, then grooved, scurfy between the 

 ribs, disc also scurfy and greyish, 1-2 lines broad ; gills close to the 

 stem ; stem up to i in. long, entirely covered with delicate, white, 

 floccose down, base with radiating fibrils. 



On cow dung. 



C. platypus. — Cap 2-3 lines across, convex or campanulate, then 

 expanded, white, then ochraceous flocculose ; gills free, narrow, 

 distant, becoming black ; stem about i J in. long, very slender, even, 

 whitish, base discoid. 



Remarkable for the flattened, discoid base of the stem, which 

 resembles that of some of the minute species of Mycoia. 



On a palm stem in a conservatory. In all probabilit}' an intro- 

 duced species. 



C. filiformis. — Cap 1-2 lines high, grey, cylindrical, striate, 

 atomate ; stem |-f in. high, very thin, white, sparingly fibrillose ; 

 gills linear. 



