LEPTONIA. 24& 



but the surface undulated, pallid, with a reddish tinge 

 below, base white, downy; spores globose, smooth, 4 /*- 

 diameter. 



Agaricus (Clitopilus) stilbocephalus, Berk, (variety), Cke., 

 Illustr., pi. 599. 



On the ground. 



The present species is figured by Cke. from a drawing by 

 "Worthington G. Smith, as a var. of Clitopilus stillocephalus, 

 from which it is quite distinct in the plane pileus, coloured^ 

 stem, and quite different spores ; neither does it agree witb 

 any other known species. 



LEPTONIA. Fries, (figs. 14, 15, p. 236.) 



Pileus regular, thin, umbilicate, or with a dark disc, 

 cuticle usually becoming broken up into darker scales or 

 fibrils, margin at first incurved ; gills adnate or annexed, 

 but soon separating (or seceding) from the stem ; stem 

 glabrous, more or less polished, cartilaginous, hollow ; spores 

 smooth or rough. 



Leptonia, Fries, Syst. Myc., i. p. 201 ; Cke., Hdbk., p. 129. 



Rarely growing on wood, mostly on the ground, some in 

 dry pastures, others in swampy places. Various tints of 

 Hue are common, also yellowish green. Distinguished from 

 Xohtnea by the margin of the pileus being incurved when- 

 young, also by the umbilicate pileus. Corresponding in 

 structure to Collybia among the Leucosporae. 



ANALYSIS OF THE SPECIES. 



* Gills whitish. Pileus rather fleshy, not striate nor 

 hygrophanous. 



** Gills at first sky-blue, or with a blue tinge. 



*** Gills pallid. Pileus becoming pale, yellow or greenish.. 



**** Gills grey or dusky. 



