POISONOUS MUSHROOMS. 93 



CLUSTERED PINK-GILLS. 



Agaricus (Entolomcu) sinuatus. 



(Plate XII. Fig. 1.) 



There is very little difference in topo- 

 logical properties between this species and 

 Agaricus fertilis, and botanically they are 

 closely allied. The present species is the 

 most common in autumn in woods, where 

 it is found in large groups, consisting 

 probably of twenty or thirty specimens. 

 The pileus or cap is from four to six inches 

 in expanse, at first convex, then flattened, 

 with the edge split and turned up. It is 

 of a greyish-white or pale grey colour, 

 with a tinge of yellow, quite smooth, and 

 often cracked when old. When three or 

 four grow close together they are much 

 contorted by mutual pressure. The gills 

 are very broad, yellowish-pink, becoming 

 pale reddish, with pinkish spores. The 

 stem is solid, whitish, five to seven inches 

 long, and nearly an inch thick, fibrillose, 



