LEPTONIA. 251 



Agaricus (Leptonid) lappula, Fries, Epicr., p. 152; Cke., 

 Hdbk., p. 129; Fries, Icones, pi. 97, f. 2. 



Among beech leaves, &c. 



Stem distinctly and widely hollow, l|-2 in. long, 1-2 lines 

 thick, equal, toiighish ; striate and blackish punctate at the 

 apex under a lens, brownish-lilac or dark purple, base with 

 white down. Pileus slightly fleshy, hemispherical, convex 

 then plane and umbilicate, 1-1 J in. broad, not striate, at first 

 softly flocculose, then with short erect fibrils at maturity, 

 crowded and blackish at the disc, hence the pileus appears 

 grey and with black points. Gills at first adnate with a tooth, 

 usually more or less separating from the stem at maturity, 

 very broad, crowded, distinct, greyish-white. (Fries.) 



Leptonia lampropoda. Fr. 



Pileus about 1 in. across, flesh thin, convex then expanded 

 (not campanulate), obtuse, becoming depressed, almost even 

 when young, never striate, at length more or less squamu- 

 lose, mouse-colour or sooty-grey with a blue tinge, becoming 

 paler but not hygrophanous ; gills adnate, readily seceding 

 and becoming almost free, ventricose, whitish then rosy ; 

 stem 1-lh in. long, rather thick, up to 2 lines, entirely 

 cartilaginous, glabrous, even, not punctate upwards, usually 

 bluish- violet, hollow; spores irregular, 10-11 X 6-7 /x. 



Agaricus (^Leptonia) lampropus. Fries, Epicr., p. 152 ; Cke., 

 Illustr., pi. 129 ; Cke., Hdbk., p. 331. 



Among grass, &c. 



Eesembling L. asprella, but known by the stout stem, 

 absence of striae on the pileus, also absence of an umbilicus. 

 (Fries.) 



Leptonia aethiops. Fr. (figs. 14, 15, p. 236.) 

 Pileus J-1 in. across, flesh thin, plane then depressed, not 

 striate, fibrillosely virgate, glabrous, shining, sooty-black, 

 not hygrophanous, but young specimens are black and 

 shining when dry ; gills adnexed or adnate, straight or 

 ventricose, whitish, edge same colour and quite entire ; stem 

 lJ-2 in. long, hardly a line thick, glabrous, blackish-brown, 

 having black points near the top; spores irregular, 10 X 7 /x. 

 Agaricus (Leptonia) aethiops, Fries, Epicr., p. 152 ; Cke., 

 Hdbk., p. 130 ; Cke., Illustr., pi. 332a. 



