264 NATURAL HISTORY BULLETIN. 



This specimen has not been collected in Iowa, but is des- 

 cribed here as a representative of this genus which is distin- 

 guished from Lachnea by the fact that the cups are buried or 

 partly buried in the ground. The margin of the cup is at 

 first even but splits irregularly as the plant matures. The 

 cups are about one inch broad and when removed from the 

 soil are found to be flattened. 



Genus V— P E Z I Z A Dillenius. 



Receptacle at first closed, spherical, then opening becoming 

 more or less cup-shaped, stipitate or sessile, externally smooth, 

 furfuraceus, or covered with flexuose, soft hairs, never clothed 

 with sharp pointed ones, fleshy, brittle. Asci 8-spored; spor- 

 ida elliptical fusiform, smooth, asperate, or reticulate. Para- 

 physes slender, clavate, or curved at their apices. Plants vary- 

 ing in color, growing on earth, wood, or other decaying 

 materials. 



The genus Peziza is separated into several groups which 

 are treated as subgetiera by Lindau and the most of these 

 groups are included here as separate genera as they are treated 

 by Saccardo in Sylloge Fungorum. 



A large number of specimens have been collected several of 

 which are described here, distributed through the different 

 genera. 



Subgenus I— A LEURU Fckl. 



Receptacle borne on a short stem or stem-like base and col- 

 ored by the red granules contained by the paraphyses. The 

 spores are marked on the outside by net-like reticulations. 



Two species have been collected which show very distinctly 

 the net-like markings on the surface of the spores which are 

 given as a characteristic of this subgenus. 



KKY TO THE SPECIES. 



a — Plants large more than 1 inch in diameter, spores 



2-guttulate ....... P. aurantia. 



a — Plants much smaller, stipitate, spores reticulate, 



1-guttulate ....... P. rulilans. 



