CLASSIFICATION 171 



often becoming more or less depressed, smooth, even, whitish or 

 pure white, 2-3 in. across ; gills deeply decurrent, distant, arcuate, 

 thick, not obviously connected by veins, yellow or citron-colour ; 

 stem solid, narrowed downwards, rather wavy, even, almost 

 smooth, whitish, 3-4 in. long. 



Resembling H. virgineus in size and build, l)ut differing in ha\'ing 

 yellow gills. 



On the ground in mossy pine woods. 



H. nivcus. — Entirely white. Cap thin, without a fleshy disc, 

 campanulate, then convex, and generally umbilicate, smooth, 

 striate and viscid when moist, i-i in. across ; gills decurrent, distant, 

 thin, connected by veins ; stem equal, straight, even, smooth, 

 ih-2 in. long. 



Smaller, more slender, and tougher than H. virgineus. In- 

 odorous. 



Among grass, moss, etc. 



H. nisso-coriaceus. — Entirely white, fragrant. Cap persistently 

 convex, disc very fleshy, edge thin, smooth, rather viscid, J-| in. 

 across ; gills decurrent, thick, very distant ; stem thick at the apex, 

 narrowed below, smooth, solid, up to i in. long. 



x\bout the size of H. nivens ; differing in the fleshy disc of the 

 cap, and the strong smell resembling Russian leather. 



In pastures, etc. 



H. veniricostis. — Cap very fleshy at the disc, edge thin, per- 

 sistently convex, sometimes irregular, white, 2-3 in. across ; gills 

 deeply decurrent, white ; stem ventricose or thickest at the middle, 

 solid, smooth, white, 2-3 in. long. 



Known among the white species by the very flesh}' cap and stout 

 ventricose or spindle-shaped stem. 



Among grass. 



** Gills adnate or sinuate. 



H. fornicatus. — Cap campanulate, then expanded and obtusely 

 umbonate, somewhat wavy, viscid, even, smooth, white or livid, 

 1-2 in. across ; gills almost free or slightl}' adnexed, with a de- 

 current tooth, thick, distant, projecting beyond the edge of the 

 cap, white ; stem firm, tough, equal, rather wavy, smooth, shining 

 white, 2-3 in. long. 



Among grass and moss. 



H. disians. — Cap plane or depressed, with sometimes an indica- 

 tion of an umbo, viscid, white, and with a silky sheen, here and there 

 stained brown, i-i^ in. across ; gills adnate, broad behind, very 

 distant, pure white ; stem rather narrowed and grey below, white 

 above, i-i| in. long. 



Cap very regular. Known amongst white species by the very 

 distant, adnate gills. 



In woods. 



