CLASSIFICATION 199 



0. glaHCOphylla. — Cap thin, infundibuliform, with fold-like 

 striations, almost smooth, mouse-colour, hygi'ophanous, up to 

 J in. across ; gills decurrent, rather distant, lanceolate, olive ; 

 stem stuffed, firm. 



Becoming pale and almost even when dry. An imperfectly 

 known species, apparently distinct. 



On the ground in woods. 



0. rustica. — Cap thin, slightly convex, umliilicate, smooth, 

 striate, hygrophanous, nearly even and slightly silky when dry, 

 greyish brown, 3-6 lines across ; gills decurrent, rather thick, 

 narrowed towards each end, grey ; stem slender, equal or 

 slightly thickened upwards, polished, grey or brown, up to i in. 

 long. 



Somewhat resembling 0. iimbcUijcni, but known by the gills 

 being narrowed behind. 



Cap deeply umbilicate, edge deeply arched, in some forms 

 smooth and 'becoming brownish, in others silky and hoary; gills 

 always broadest in the middle. 



On the ground. 



*** Gills very distant, broad, usually thick. 



0. liepatica. — Cap very thin, tough, rigid, convex and umbilicate, 

 then infundibuliform, even, smooth, rufous flesh-colour, yellowish 

 tan and somewhat shining when dry, .^-i in. across ; gills decurrent, 

 distant, rather narrow, forked, rather thick, pallid ; stem slender, 

 very tough, often compressed, brownish flesh-colour, hollow, up to 

 I in. long. 



Very tough and flexible ; cap sometimes waved and lobed ; 

 gills distinctly connected by veins. Very much resembling 0. 

 pyxidata, differing in being coriaceous, edge of cap even, and 

 absence of the reddish tinge of the gills. 



On lawns, by roadsides, etc. 



0. demissa. — Cap at first convex, soon expanded and umbilicate, 

 rather fleshy, edge crenulate, reddish grey or buff, at length pale 

 and minutely mealy, about \ in. across ; gills decurrent, rather 

 thick, flesh-coloured, especially towards the edge, forked, rather 

 distant, slightly connected by veins, stem slender, wavy, coloured 

 like the cap, smooth, shining, solid, about | in. long. 



On the ground among grass, moss, etc., in exposed places. 



0. muralis. — Cap thin, pliant, umbilicate, edge arched and 

 striate and crenulate, smooth, reddish brown, |-| in. across ; gills 

 decurrent, narrowed at both ends, distant, pallicl, or white with a 

 yellow tinge ; stem slender, smooth, stuffed, coloured like the cap, 

 |-| in. long. 



Intermediate between 0. hepatica and 0. umbcUijcra, differing 

 from the former in the striate cap when moist, and by the gills not 

 being connected by veins ; from the latter by the gills being 



