OMPHALIA. 391 



more thick, round and curved, or compressed and ascending, 

 undulate, grey. 



Agaricus (OmpTialia) oniscus. Fries, Epicr., p. 123 ; Cke., 

 Hdbk., p. 94 ; Cke., lUustr., pi. 209a. 



Among damp mosses, &c. 



Distinguished by the grey colour of every part. Allied to 

 0. pyxidata ; the latter, however, differs in the yellowish- 

 brown colour. 0. rustica differs in the shorter stem, and 0. 

 striaepileus in the longer, slender stem. 



Omphalia caespitosa. Bolton. 



Pileus about J in. across, flesh thin, almost hemispherical, 

 umbilicate, sulcate almost to the centre, margin crenate, 

 smooth, pale ochraceous- white ; gills shortly decurrent, 

 distant, rather broad, whitish; stem |-j in. long, nearly 1 

 line thick, almost equal, slightly bulbous at the base, coloured 

 like the pileus, hollow. 



Agaricus caespitosus, Bolton, t. 41 ; Cke., Hdbk., p. 94 ; 

 Cke., Illustr., pi. 209b. 



On banks. 



This species has been confounded with 0. oniscus, Pr., 

 both in the " Handbook," ed. i., and by Fries himself. It is 

 exactly the plant figured in the English edition of Bolton, 

 but the German reprint is coloured quite differently. The 

 colour is entirely of a delicate ochraceous- white. (Cooke.) 



Omphalia glaucophylla. Lasch. 



Pileus up to -|- in. across, membranaceous, infundibuliform , 

 plicately striate, almost glabrous, mouse-colour, hygropha- 

 nous, becoming pale and almost even when dry ; gills de- 

 current, rather distant, lanceolate, olive ; stem stuffed, firm. 



Agaricus (OmpTialia^ glaucopliyllus, Lasch, no. 217; Cke., 

 Hdbk., p. 94. 



On the ground in woods. 



A small, and apparently distinct species, but comparativelj" 

 rare and imperfectly described . 



Omphalia rustica. Fr. 



Pileus 3-6 lines across, membranaceous, slightly convex, 



umbilicate, glabrous, striate, hygropbanous, nearly even, and 



slightly silky when dry, greyish-brown; gills decurrent, 



rather thick, equally narrowed at each end, grey, margin 



