COPRINUS. 77 



Gills, broad, adnate, very broad, varying tints of black. 

 Stem, equal, whitish, white pulverulent at apex. 

 Common in grassy lawns. 



P. fimicola. Fr. 



Pileus, campanulate, convex, obtuse, smooth, marked near 



the margin with a narrow brown zone. 



Gills, adnate, variegated with brown and greyish. 



Stem, pale, fragile. 



This is the dung agaric, growing only on dung. Common during the 

 summer. 



Genus XXVIII. PSATHYRE)I,I,A. 



Pileus membraneous, small and fragile, striated, margin not 

 exceeding the gills. Gills dark but not deliquescing. 



P. disseminatus. Pers. 



Pileus, ovate, campanulate, furfuraceous, sulcate, striated, 

 ochraceous at first, then white. 



Gills, pinkish, adnate, cinereous, black when old. 

 Stem, tender, white, fistulose, pubescent at the base. 



The scattered psathyrellus is a tiny little toadstool growing around trees 

 and stumps. It grows in clusters two to three feet in extent ; ver}^ deli- 

 cate. They seem to melt away as soon as picked. 



In lawns near or surrounding stumps of trees. 



Genus XXIX. COPRINUS. Persoon. 



Hymenophore confluent with or free from the stem. 

 Gills membranaceous, at first closely pressed together and 

 cohering, at length melting away into a black fluid. Spores 



