418 FUNGUS-JfLOIiA. 



II. DIFFOEMES. 



Clitocybe decastes. Fr. 



Densely caespitose. Pileus 5-12 in. across, soon almost 

 plane, disc gibbous or obtuse; margin at first shortly in- 

 curved, then expanded, very much waved and often lobed, 

 even, glabrous, dingy-brown or livid when moist, pale clay- 

 colour when dry ; flesh exceedingly thin except at the disc, 

 whitish; stem 4-7 in. long, J-H in. thick, usually slightly 

 thinner upwards, rather soft, entirely fibrous, solid, white, 

 usually curved and ascending, coalescent into a solid mass 

 at the base; gills adnato-decurrent, or often more or less 

 adnexed, up to in. broad, rather narrowed towards the 

 the margin, often wavy; spores globose, smooth, 4 /x. 

 diameter. 



Agaricus (Clytocybe) decastes, Fries, Epicr., p. 65; Cke., 

 Hdbk., p. 51 ; Fries, Icon., t. 52. 



On the ground. 



In open grassy places on the ground, forming dense tufts 

 containing in some instances as many as 40 individuals. 

 The stalks are entirely fibrous and easily split into longi- 

 tudinal shreds. The pileus reaches up to 1 foot in diameter, 

 flesh very thin, margin much waved and often distorted 

 from mutual pressure, glabrous, smoky-brown, or livid, 

 shining as if oiled. The stems are usually more or less 

 grown together at the base. The tufts are usually much 

 smaller when growing in woods. 



Clitocybe subdecastes. Cke. & Mass. 



Clustered. Pileus l|-2^ in. high and broad, flesh rather 

 thin; campanulate or convex, very obtuse, even smooth, 

 pale ochraceous at the disc, becoming paler and whitish 

 towards the more or less lobed margin ; gills slightly rounded 

 behind, adnate, 2-3 lines broad, narrower in front, rather 

 crowded, white; stem 4-5 in long, ^ f- in. thick, equal, 

 fibrillose, whitish, base smooth; spores globose, 4-5 p 

 diameter. 



Agaricus (Clitocybe) subdecastes, Cke. and Mass., Cke., 

 Hdbk., p. 36d ; Cke, Illustr., pi. 958. 



On the ground. 



