396 FUNGUS-FLOEA. 



Agaricus (Omplialia) retostus, Tries, Bpicr., p. 125 ; Cke., 

 Hdbk., p. 96 ; Cke., lUustr., pi. 272b. 



Somewhat resembling the timber form of 0. umhelUfera, 

 but firmer, and the gills ditfer in resembling the segment of 

 a circle in outline, that is broadest in the middle, and gradu- 

 ally narrowed to each end. Like 0. umhratilis in colour and 

 form, but readily known by distant gills. 



Omphalia abhorrens. B. & Br. 



Very foetid. PUeus about | in. across, umbilicate, smooth, 

 brown, becoming pale ; gills narrow, decurrent, pale ; stem 

 about 1 in. long, slender, slightly thickened at the apex, 

 coloured like the pileus. 



Agaricus {Omplialia) abhorrens, B. and Br., Ann. Nat. Hist., 

 no. 1863 ; Cko., Illustr., pi. 272c. ; Cke., Hdbk., p. 97. 



Among short grass, on lawns, &c. 



Allied closely to 0, retosta, but clearly distinct, apart from 

 its disgusting smell ; stem sometimes pruinose when young. 

 (B. & Br.) 



Omphalia pseudoandrosacea. Bull. 



Whitish or greyish. Pileus about J in. across, flesh very 

 thin, convex or ^expanded, deeply umbilicate, and at length 

 infundibuliform, striately plicate, glabrous, margin crenu- 

 late ; gills deeply decurrent, distant, distinct, rather triangu- 

 lar ; stem about 1 in. long, not ^ line thick, equal, stuffed. 



Agaricus pseudoandrosaceus, Bulliard, t, 276 ; Cke., Illustr., 

 pi. 251a; Cke., Hdbk., p. 97. 



Among short grass. 



Allied to 0. griseo-pallida, but much more slender. Differs 

 from 0. grisea in the umbilicate or infundibuliform pileus. 



Omphalia griseo-pallida. Desmaz. 

 Pileus up to ^ in. across, flesh thin, convex then plane, 

 umbilicate, even, glabrous, somewhat shining, hygrophanous, 

 brovsmish-grey becoming hoary, often unequal and excentric, 

 margin drooping but not incurved ; gills decurrent, broadest 

 behind, distant, rather thick, colour of the pileus when moist, 

 when dry becoming not pale as usual, but darker ; stem up 

 to ^ in. long, thin, equal or slightly thickened upwards, 

 rather firm, glabrous, brown, rather hollow when old. 



