IOWA DISCOMYCETES 69 



Pustularia vesiculosa Fuckel, Symb. Myc. 329. 1869. 



Cups large, gregarious or cespitose, at first hemispherical be- 

 coming expanded, but remaining cup-shaped, margin often con- 

 torted and undulate with age, fleshy, very fragile, furfuraceous, 

 externally whitish or often reddish-brown near the margin, with 

 the hymenium darker, yellowish, 2 to 3 cm. in diameter; asci 

 cylindrical, operculate, 8-spored; spores elliptical, smooth, 20 

 to 22 by 1CV*, granular within; paraphyses slender but enlarged 

 upwards, granular within. 



On rich ground and dung heaps, Iowa City, common. 



The plants of this species are common on manure piles which 

 are mixed with straw and on ground fertilized with such mate- 

 rial. The plants are at first hemispherical and very regular 

 becoming very much contorted with age especially when occur- 

 ring in dense clusters as they often do. In younger specimens 

 the exterior of the cups is very furfuraceous becoming more 

 nearly smooth with age. This was listed in Discomycetes of 

 Eastern Iowa as Peziza cerea Sow. which has been described as 

 a, variety of this species. 



Peziza repanda Pers., lc. Pictae 49. 1806. 



Plate 15, f. ii. 



Aleuria repanda Gill., Discom. 43. 1879. 



Plants gregarious but not crowded, with a short but distinct 

 stem; cups concave, nearly white, soon becoming repand and 

 umbilicate, when mature more or less angular, often 3-sided and 

 darker yellowish to brownish, stem obscured by the expanding 

 disc, 2 to 10 cm. in diameter; asci cylindrical, 8-spored; spores 

 ■elliptical, smooth, 15 to 18 by 10/a paraphyses clavate. 



On coal dust in basement, Mt. Pleasant, and logs, Decorah. 



This is a species concerning which there is much doubt as to 

 the real nature of the specimens originally referred to it. Speci- 

 mens collected by Mr. Holway in the northeast part of the state 

 liave been referred here. From plants collected in Mt. Pleasant 

 the illustration in this work is drawn, which plants were studied 

 {luring the entire summer. The cups are at first small with a 

 conspicuous stem and almost perfectly white. Very soon the 



