CLASSIFICATION 183 



Entirely white, inodorous ; gills never tinged yellow. 



Among heaps of dead leaves, etc. 



var. difformis. — Tufted, often very large and the cap wavy or 

 lobed, 2-7 in. across. 



C. phyllophila (PI. XVII, fig. i). — Cap rather fleshy, convex, then 

 plane, becoming umbilicate and depressed, sometimes wavy, 

 smooth and even, whitish tan, 1-3 in. across ; gills thin, subdistant, 

 white, then tinged ochre, rather broad, slightly decurrent ; stem 

 equal, whitish, tough, silky-fibrillose, soon hollow, 2-3 in. long. 



Cap becoming depressed, but never truly infundibuliform, often 

 excentric and wavy, pale tan, then pallid white. 



Among leaves in woods ; somewhat tufted. 



C. pithyophila. — White. Cap thin, more or less plane and um- 

 bilicate, often wavy and lobed, hygrophanous, smooth, shining 

 white when dry, 1^-3 in. across ; gills slightly decurrent, crowded, 

 persistently white ; stem equal, often compressed, white, smooth, 

 base downy, imperfectly hollow, about 2 in. long. 



Allied to C. phyllophila, but clearly distinguished by the per- 

 sistently white gills and cap. C. tuba is often confounded 

 with the present species, but differs in the deeplv decurrent 

 gills. 



On the ground in pine woods, etc. Gregarious or slightly 

 clustered. 



C. tornata. — White. Cap with a fleshy disc, orbicular, flattened 

 or somewhat depressed round the gibbous disc, becoming slightly 

 downy and shining, 1-2 in. across ; gills adnate or very slightly 

 horizontal, crowded ; stem equal, smooth but not polished, slightly 

 striate, tough, about i^ in. long. 



Distinguished from allies by its small size and regular shape. 



In woods, etc. 



C. candicans. — Entirely white. Cap thin, convex, then plane 

 or slightly depressed, umbflicate, regular or slightly excentric, 

 even and adpressedly silky, shining white when dry, about i in. 

 across ; gills adnate, then slightly decurrent, crowded, very thin, 

 narrow, straight ; stem even, smooth, cartilaginous and polished, 

 base downy, incurved and rooting, 1-2 in. long. 



Small, rather tough, approacliing Omphalic! in the structure of the 

 stem. Stem thin, often more or less wavy. 



Among damp fallen leaves. 



C. dealbata. — Cap thin, dry, tough, convex, then plane, becoming 

 upturned and wavy, even, smooth, somewhat shining, at lengtli 

 minutely mealy, white, i-ij in. across ; gills adnate, scarcely 

 decurrent, thin, crowded, white ; stem equal, often curved, white, 

 apex mealy, entirely fibrous, about i in. long. 



Cap orbicular or irregular and wavy. C. criceiorum differs in 

 the distant, decurrent gills 



