4 FUNGUS-FLORA. 



Inocybe. Stem fleshy not cartilaginous ; cuticle of pileus 

 fibrillose or silky ; gills sinuato-adnexed. 



Bolbitius. Pileus membranaceous ; gills soon deliques- 

 cent. 



Pluteolus. Gills free. 



Stem furnished with a volva or ring. 



Pholiota. Ring present ; volva absent. 

 Acetabularia. Volva present, ring absent. 



PAXILLUS. Fries. 



Pileus symmetrical, excentric, or conchiform ; margin invo- 

 lute, more or less fleshy; stem central, excentric, lateral, or 

 absent, expanding at the apex without differentiation into 

 the flesh of the pileus; gills decurrent, usually separated 

 from the flesh of the pileus by a thin differentiated horny or 

 cartilaginous layer, hence easily separated from the latter : 

 spores dirty white or pale ferruginous. 



Paxillus, Fries, Gen. Hymen., p. 8 ; Cke., Hdbk., p. 285. 



The most pronounced characteristics of the present genus 

 are : the strongly involute pileus, the decurrent gills easily 

 removable from the flesh of the pileus, and the dingy or 

 ferruginous spores. 



ANALYSIS OF THE SPECIES. 



I. LEPISTA. Pileus entire, central ; spores dirty white 

 (rather ferruginous in P. panaeolus). 



II. TAPIKIA. Pileus usually excentric or resupinate ; 

 spores ferruginous. 



