Fungi with Gills 



GENUS STROPHARIA 



There are about seven species of this genus in America. The 

 spores are brown, there is no volva, the stem has a collar, and 

 the lamellae are united with the stem. They have no special 

 economic importance. 



GENUS PS A THY RA 



Two American species are reported for this genus. The 

 spores are dark brown, there is no volva, the veil is inconspicu- 

 ous or wanting, and the lamellse attached to the stem or notched 

 at the inner extremity. The margin of the cap in the young 

 plant and mature plant is always straight. 



GENUS PSILOCYBE 



Eleven American species are reported for this genus. The 

 spores are dark brown. There is no volva, the veil is incon- 

 spicuous or wanting, and the lamellae are attached to the stem 

 or notched at the inner extremity. In the young plant the cap 

 curves in at the margin. 



GENUS PI LOS ACE 



This genus has but one American species recorded. The 

 spores are dark brown. There is no volva, and the veil is incon- 

 spicuous or wanting. The lamellae are free from the stem. 



GENUS DECONICA 



But one American species is reported. This has dark brown 

 spores, and the lamellae growing down on the stem. The veil 

 is inconspicuous or wanting, and there is no volva. 



Str6ph-a'-ri-a Psa-thy'-rS PsM6-9y'-be 



Pi-Io-sa'-9e De-c6n'-l-ca 



82 



