Parasitic Fungi of Illimois. 227 



M. grossularise, DC. 



Hypogenous. Spots distinct, swollen, yellow; aecidia 

 densely clustered, medium size, edge entire and erect or often 

 many times split and recurved; spores subglobose, epispore very 

 thin, obscurely roughened. 



On leaves and fruit of Eibes rotundifolium : McLean, May 

 22, 4730, May 23, 4758, May 29, 4814, May 30, 4836. Culti- 

 vated gooseberry: McLean, May 31, 4847, coll. C. A. Hart; 

 Champaign, coll. T. J. Burrill. 



M. epilobii, DC. 



Amphigenous. ^Ecidia scattered rather uniformly over 

 the surfaces of the leaves, sometimes more abundant beneath, 

 short, rather coarsely and deeply split and much recurved; 

 spores subglobose, epispore thin, smooth or nearly so, 15-18 p; 

 spermagonia honey-yellow, appearing before the aecidia, scat- 

 tered over both surfaces, more numerous above. 



On (Enothera biennis: Union, April 29, 5019. 



There is much reason to suppose that this is Uromyces 

 cenotherce, Burrill. The specimens on (Enothera linifolia. from 

 Jackson county, are, if not identical, exceedingly similar, as 

 may be learned by comparing the descriptions. Moreover, Mr. 

 C. A. Hart collected May 27th, 1883, in McLean county, on 

 the radical leaves of what is supposed to be (Enothera biennis, 

 a Uredo, which is undistinguishable from the uredo form of 

 this Uromyces. The sori of Mr. Hart's specimens are developed 

 on both surfaces of the leaves, but the greater number open on 

 the under side the only point of difference noted. 



M. oenotherse, Peck. 



Hypophyllous, or very sparingly produced above. Spots 

 conspicuous, usually purple, scarcely thickened; aecidia crowded 

 in a somewhat definite circle, with a small central vacant area, 

 short, deeply and rather coarsely split and much recurved; 

 spores subglobose, epispore thin, very minutely tuberculate, 

 15-18 m; spermagonia few, very inconspicuous, on the upper 

 side of the leaf in the center of the spots, honey-yellow. 



