400 FUNGUS-FLOEA. 



Sides of ditclies and damp places. 



Gregarious, tough, hygrophanous ; pileus lioary when dry. 

 Somewhat resembling 0. retosta, but distinguished by the 

 crowded gills. 



Omphalia fibula. Bull. 



Pileus up to ^ in. across, membranaceous, margin of pileus 

 drooping then expanded, sometimes truly conical and papil- 

 late, usually umbilicate and at length quite infundibuliform, 

 hj'grophanous, glabrous, striate when moist, pale when dry, 

 orange-yellow, but sometimes brownish or entirely white ; 

 gills deeply decurrent, distant, distinct, broad, whitish ; 

 stem 1-1 2^ in. long, very slender, coloured like the pileus, 

 stuffed then hollow ; spores elliptical, 4-5 x 2 w. 



Agaricus fibula, Bulliard, Champ. France, 186, f. 1 ; Cke., 

 Hdbk., p. 99 ; Cke., Illustr., pi. 274b. 



Damp places among moss, &c. 



Also usually abundant on ground that has been burnt. 



Very slender and delicate, but tough, very elegant. Stem 

 usually very slender and weak, but sometimes, especially in 

 Alpine districts, more robust and straight. 



Pileus 1-6 lines broad, at first hemispherical, the margin 

 inflexed, then plane ; more or less depressed, yellow or 

 tawny with a dusky centre, obscurely striated, the whole 

 minutely pilose. Gills yellowish or white, distinct, not 

 ventricose, decurrent. Spores wliite, round. 



Stem 1-1 i in. high, not a line thick, slender, 3-ellow, or 

 tawny with a violet-brown apex, the whole minutely pilose 

 like the j^ileus and obsoletely fibrillose. (Berk.) 



Var. Swartzii, Pries, Monogr., i. p.l7; Cke., Hdbk., p. 

 99; Cke., Illustr., pi. 274b. 



About the size of the typical form, but differing in the 

 almost plane, whitish pileus with a brown disc, stem whitish, 

 apex tinged with violet ; altogether firmer ; spores elliptical, 

 4x2. 



On the ground. 



Omphalia directa. B. & Br. 

 Very minute, nail-shaped, pileus rarely 1 line across, flat 

 at the apex, white; gills decurrent, white; stem rather 

 wavy, not 1 in. high, very slender, whitish with a tinge of 

 rufous, clad with long hairs at the base. 



