KEY TO THE MORE IMPORTANT GENERA OF FAMILY AGARICACEAE 523 



Key to the Mostly Centrally Stipitate, Soft, Putrescent Genera of Rhodosporae 



Spores angular. Rhodophyllus'^ 



Spores not angular. 



Spores longitudinally striate. 



Stipe eccentric to central; terrestrial. Clitopilus 



Stipe lateral or lacking; not terrestrial. Octojuga 



Spores smooth, globose to ellipsoid. 



Volva well developed; annulus lacking. Volvaria 



Volva typically wanting. 



Annulus present. Annularia 



Annulus absent. 



Gills free; cap and stipe readily separable. Pluteus 



Gills attached to stipe; pileus and stipe not separable. 



Psathyrella 



Key to the Centrally Stipitate, Soft, Putrescent Genera of Ochrosporae 



Partial veil cobweb-like; spores typically with a slightly wrinkled to warty exo- 

 spore and never truncate; typically terrestrial. 



Cortinarius 



Not as above. 



Cuticle of pileus in the form of a viscid pellicle, or radially arranged as inter- 

 woven filamentous hyphae typically 1.5-5 n in diameter. 

 Stipe typically fleshy, about 4-20 (up to 40) mm. thick. 

 Typically terrestrial. 



Annulus membranous; rudimentary universal veil often evident. 



Rozites 

 Annulus not membranous, but a fibrillose zone may be present. 

 Pileus viscid. Hebeloma 



Pileus typically dry and fibrillose. Inocyhe 



Typically lignicolous. 



Annulus present or stipe conspicuously scaly or both. 



Pholiota 

 Annulus lacking; scales if present on the stipe easily obliterated. 



Flammula 

 Stipe typically cartilaginous or slender and fragile. 



Spores very pale and thin- walled ; gills typically subdecurrent to decurrent 



and pale to bright cinnamon. Tubaria 



Spores typically thick- walled and yellowish brown; gills typically adnate 

 or notched. 

 Margin of pileus straight at first. Galerina 



(Galera in part) 

 Margin of pileus at first incurved or inroUed. Naucoria 

 Cuticle of pileus formed by a palisade of pyriform cells, or if the cells are irregu- 

 larly arranged, vesiculose and nearly isodiametric (best determined 

 in young pilei) ; spores typically truncate. 

 Pileus plicate-striate; paraphyses coprinoid; more or less deliquescent. 



Bolhitius 



11 Thi.s includes the genera known as Enlnloma. Nolanea, Leptonia, and Eccilia. 



