30 THE AGARICACEAE OF MICHIGAN 



41. Veil present, remaining attached to margin of pileus, 



rarely forming an annulus : Hyplioloma. 



41. Veil, if at first present, quickly evanescent or none at all; 



slender-stemmed (42 ) 



42. Margin of pileus at first straight; hygrophanous : Psathyra. 



42. Margin of pileus at first incurved ; gills adnexed to adnate- 



subdecurrent : Psilocybc. 



Blaclc-Spored Agarics 



43. Gills delinquescing into a black mass when mature : Goprinus. 



43. Gills not delinquescing (44) 



44. Spores elongate-fusiform; gills decurrent; soft-waxy; 



pileus viscid: GompMdms. 



44. Spores globose to elliptical (45 ) 



45. Pileus with striate or sulcate margin, fragile: Psathyrella. 

 45. Pileus not striate, rather fleshy, exceeding the gills; gills 



variegated-dotted by the spores: Panoeolus. 



