Parasitic Farif/i of TJJimols. 227 



^. grossulariaB, DC. 



Hypogenous. Spots distinct, swollen, yellow; tiecidia 

 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 Ribes rofundifoliuui : McLean, May 

 22, 4730, May 23, 4758, May 29, 4814, May 30, 4830. Culfi- 

 rated c/ooseberrij: McLean, May 31, 4847, coll. C. A. Hart; 

 Champaign, coll. T. J. Burrill. 



^. epilobii, DC. 



Amphigenous. vEcidia scattered rather uniformly over 

 the surfaces of the leaves, sometimes more abundant ]>eneatli, 

 short, rather coarsely and deeply s})lit and much recurved; 

 spores subglobose, epispore thin, smooth or nearly so, 15-18 /j.; 

 spermagonia honey-yellow, appearing before the iecidia. scat- 

 tered over both surfaces, moi'e numerous above. 



On (Efwfhera biennis: LTnion, Ajiril 29, 5019. 



There is much reason to suppose that this is Urotui/res 

 amothera'. Burrill. The specimens on (Enofheya lini/oIi((. from 

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

 may be learned l)y comjiaring the descriptions. Moreover, Mr. 

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

 the radical leaves of Avhat is supposed to be (Enofhefa biennis^ 

 a Uredo, which is undistingnishable from the uredo form of 

 this T^roiinjccs. The sori of Mr. Harts specimens are developed 

 cm Ijoth surfaces of the leaves, but the greater numl)er open on 

 the under side — the only point of difference noted. 



M. oenotherse, Peck. 



Hypophyllous, or very sparingly produced above. Spots 

 conspicuous, usually })ur})le, scarcely thickened; tecidia crowded 

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

 short. dee])ly and rather coarsely split and much recurved; 

 spores subglobose, epispore thin, very minutely tuberculate, 

 15-18 ,a; spermagonia few, very inconspicuous, on the u])])er 

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



