312 Transactions. — Botany. 



convex, with the margin incurved, rather silky, whitish or 

 with a tinge of red, more or less hoary when dry, 1-1-5 cm. 

 across ; gills broad, ventricose, crowded, pale-grey, then 

 reddish ; spores pink, globose, rather coarsely warted, 5-6 fx 

 diameter. The pileus is either almost sessile or fm-nished 

 with a short lateral or sometimes almost central stem. 



On the ground, attached to moss, twigs, &c. ; also on wood. 

 Dannevirke, New Zealand Australia, Europe, United States. 



In the young condition, while the gills are yet white, the 

 present species might be mistaken for a Pleurotus : the pink 

 warted spores readily show its affinities at maturity. The 

 present species is quite distinct from Crepidotus epigceus, 

 although given as a synonym under the last-named species by 

 Cooke, in Austr. Fung., no. 299, p. 59. G. depluens has been 

 also received from Queensland. 



16. Leptonia, Fries. 



Pileus regular, thin, umbilicate, margin incurved when young ; 

 gills aduate or adnexed, but soon separating from the stem, 

 and then appearing as if free ; stem central, externally 

 cartilaginous and polished ; spores salmon-colour. 

 Leptonia, Fries, Syst. Myc, i., p. 201 (as a subgenus of 

 Agaricus) . 



Allied to Nolanea, but distinguished by the umbilicate 

 pileus having the margin incurved when young. Correspond- 

 ing in structure to Colly bia in the Leucosporcz. Earely on 

 wood ; mostly in open pastures. Tints of blue or green are 

 not uncommon in the genus. 



49. Leptonia asprella, Fvies, Epicr., p. 154; Massee, Brit. 

 Fung.-Flora, ii., p. 256 ; Sacc, Syll. v., no. 2054. 



Pileus somewhat membranaceous, convex, then expanded, 

 umbilicate, and there more especially downy, then squamulose, 

 sometimes glabrous (except the disc), sometimes fibrillose, 

 hygrophanous, at first smoke-colour, or mouse-colour, then livid 

 grey, 25-4 cm. across; gills adnate, then separating from the 

 stem and becoming free, rather distant, plane, equally narrowed 

 from the stem to the margin, greyish- white, edge quite entire 

 and of the same colour as the remainder; spores elliptical, 

 10-12 X 6-8 /x; stem 25-5 cm. long, not more than 2 mm. 

 thick, equal, straight, even, glabrous, cartilaginous, hollow, 

 livid, fuscous, green and blue mingled, &c., base with white 

 down. 



Among grass. New Zealand. Europe. 



Some specimens have the pileus squamulose everywhere, 

 some forms resemble a Nolanea ; pileus hemispherical, then 

 campanulate, disc sometimes with a minute depression, some- 

 times with a papilla (Fries). 



