350 BRITISH FUNGI 



then naked and greyish white, striate ; gills blackish ; stem i J-2 in. 

 long, covered with white down, becoming smooth. 



Tufted. Smell \'ery strong and unpleasant. Otherwise diflftcult 

 to distinguish from C. nivens. 



On dung. 



C. macrocephalus. — Cap up to | in. across, cylindrical, then cam- 

 panulato-expanded, ashy grey, disc brownish sprinkled with paler 

 scales ; gills black ; stem i|— 2 in. long, whitish, fibrillose. 



Distinguished among the small grey species by the pointed 

 squamules on the cap and fibrihose stem. 



On dung. 



C. nycthemerus. — Cap up to | in. across, conico-cylindrical, then 

 expanded and splitting, grey, disc tawny, grooved, floccosely 

 mealy ; gills narrow, blackish ; stem 2-3 in. long, whitish, 

 smooth. 



On dung and manured ground. Tufted. 



C. radiatiis (PI. XXV, fig. 4). — Cap 2-3 lines across, cyhndrical, 

 then campanulate, becoming flat, soon sphtting, grooved, yellowish, 

 disc tawny, at first covered with greyish down ; gills blackish ; stem 

 ^i in. long, whitish. 



Very ephemeral. Known by its minute size and flat, split cap. 



On horse dung, often in cavities or on the under side. Very 

 common. 



C. cordisporns. — Cap cylindric-ovate, then expanded and up- 

 turned, very thin, grooved, edge crenate, whitish or tinged ochra- 

 ceous, disc scurfy and tawny, 2-3 lines across ; gills free, rather 

 narrow ; stem hair-like, smooth, even, whitish and hyahne, base 

 densely strigoso-squamulose, up to | in. long (spores heart-shaped, 

 compressed, blackish) . 



Readily distinguished amongst the \'ery minute species by the 

 compressed, heart-shaped spores. 



On dung of various animals. 



C. gibbsii. — Cap hemispherical, then expanded, striate, smooth, 

 and minutely atomate or sparkling, pale buff or pale ochraceous, 

 disc darker, 1-2 hues across ; gills adnate, few in number, 5-7 ; 

 stem hair-like, white, and pellucid, polished, 3-4 lines long (spores 

 circular, compressed). 



Probably the smallest agaric known. Differs from C. cordisporus 

 in its circular spores, and from C. radiatus in its smaller size and 

 different spores. 



On dung of horse, sheep, etc. 



C. spraguei. — Cap up to f in. across, conical, then expanded and 

 upturned, downy, greyish, disc tawny, grooved ; gills few, becoming 

 blackish ; stem i J-2 in. high, smooth, pale cinnamon. 



Known by the coloured stem. 



On the ground. 



