70 FUNGUS-FLOEA. 



On tlie ground under trees. - > 



Habit nearly tliat of B. ocTiroleuca,' -whidh it also yesejiibles 

 in colour, but differing in the darker and minutely granular 

 disc, as well as the mealy stem, which is not at all grey ; 

 the cuticle of the pileus is continuous from the margin for 

 some distance along the edge of the gills. (Cooke.) 



The disc is often granular in B. ochroleuca, and the present 

 species is best distinguished by the granular, persistently 

 white stem, gills narrowed behind, and with projecting 

 cystidia. B. daroflava differs in the stem turning grey and 

 the gills yellnw. Finally, B. citrma differs in the clear 

 lemon-yellow pileus and mild taste. 



Russula foetens. Fr. 



Acrid. Smell foetid. Pileus 3-6 in. across, flesh rather 

 thin, rigid and fragile, pallid ; subglobose then expanded 

 and becoming depressed, pellicle adnate, not separable, viscid 

 in damp weather, dingy ochraceous yellow, becoming pale ; 

 margin membranaceous, sulcate for a considerable distance 

 from the edge, at length tubcrculose, incurved at first ; gills 

 adnexed, crowded, connected by veins, with numerous fu:^d 

 and shorter ones, 2-3 lines broad, whitish, when young 

 exuding drops of water ; stem about 2 in. long, |-1 in. thick, 

 wlntishV stuffed then hollow; spores 8-10 /j,; cystidia 

 absent. 



Bussula foetens. Fries, Epicr., p. 356 ; Cke., Hdbk., p. 329; 

 Cke., lUustr., pi. 1046. 



In woods. 



Large, very rigid, easily known by the penetrating em- 

 pyreumatic smell; pileus at length upturned and wavy. 

 Gills (free at fiist) thin, becoming slightly tinged yellow, 

 4ingy when bruised. (Fries.) 



Smell sometimes almost none, known by the rigid, dingy 

 ochraceous pileus with a suloate, tuberculose margin. Burst- 

 ing through the ground like a ball, then expanding. 



Var. subfoetens ; Bussula suhfoetens, Smith, Journ. Bot., 

 1873, p. 337 ; Cke., Hdbk., p. 329; Cke, Illustr.,,pl..l047. 



Pileus buUate, rather viscid., disc fleshy, margin somewhat 

 membranacepus ; gills thick, distant and branched ; , stem 

 not so stout as, in U. /oeiens ; smuller, colour somewhat dis- 

 agreeable; taste slightly acrid; spores 10 x 8 ju,. 



