LEPTONIA. 253 



In Cooke's figure, copied from a drawing made by the 

 Rev. M. J. Berkeley, the pileus is 1-1 in. across, umbilicate, 

 margin vaulted, whitish with a lilac tinge, and slightly 

 sprinkled with fibrils. Stem 3-4 in. long, 1J line thick, 

 rather flexuous, whitish with lilac tinge, hollow. Gills 

 broad, adnate, salmon-colour; spores subglobose, warted, 

 5-10 p. diameter. 



This does not agree with the type form, and may prove to 

 be distinct. 



Leptonia euchroa. Pers. 



Pileus about f in. across, rather fleshy, convex, obtuse, not 

 striate, squamulosely fibrillose, at first violet then smoky- 

 purple ; gills adnate, very ventricose, plane, dark violet but 

 becoming pale, the margin remaining dark; stem about 

 H in. long, 1 line thick, equal, glabrous, naked, even, tough, 

 dark violet ; spores oblong, coarsely warted, 10 x 7-8 p.. 



Agaricus euchrous, Persoon, Syn., 343; Cke., Hdbk.,p. 130; 

 Cke., Illustr., p. 334. 



On trunks and branches of hazel, &c. 



Solitary or gregarious. Known from L. chalybea and 

 L. lazulina by growing on wood. 



Leptonia chalybea. Pers. 



Pileus about 1 in. across, flesh thin, convex, somewhat 

 umbonate, not striate, at first flocculose, then squamulose, 

 dark violet or blackish-blue ; gills adnate, crowded, broad, 

 ventricose, greyish- white, margin slightly paler ; stem li-2 

 in. long, about 1 line thick, cartilaginous, stuffed, ratner 

 firm, glabrous, even, steel-blue ; spores 10 x 6 p.. 



Agaricus cJialyleus, Persoon, Syn., p. 343 : Cke., Hdbk., p. 

 130; Cke., Illustr., pi. 325. 



Among grass, &c. 



In colour almost resembling L. lampropoda, but very dif- 

 ferent in structure, stem much more slender, &c. 



Distinguished from L. lazulina by the pileus not being 

 striate, and from L. euchroa by growing on the ground. 



Sub-gregarious. Pileus |-1 in. broad, convex, minutely 

 umbonate, scaly, dark blue or almost black, subcarnose, 

 slightly carnose on the margin; flesh dark-blue. Gills at 

 first pale then clouded lightly of the colour of the pileus. 



