Pantslfir FiiiKji of f/llwols. 227 



^. grossularise, 1 )( '. 



Iiy[)ogeii(ms. S[)ots distinct, swollen, yellow; leeidiu 

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

 many times split and recurved; spores subojlolioso, P])is])or(' very 

 thin, obscurely roughened. 



On leaves and fruit of Rihcs rotuitdifolixiii : McLean. May 

 22, 4780, May 23, 4758, May 2U, 4814, May 30, 4830. Cnlfl 

 rufed gooscbcrrij: McLean, May 31, 4847, coll. C. A. Hai-t: 

 Champaign, coll. T. J. Burrill. 



M. epilobii, DC. 



Amphigenous. ^cidia 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 /t; 

 sperm agonia honey-yellow, appearing before the tecidia. scat- 

 tered over both surfaces, more numerous above. 



On CEnothera biennis: LTnion, April 29, 5019. 



There is much reason to suppose that this is Uromi/ces 

 (enothercc, Burrill. The specimens on (Enofhera 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 CEnothera biennis^ 

 a Uredo, which is undistinguisha1)le from the uredo form of 

 this Vroniyces. The sori of Mr. Hart's specimens are develo])ed 

 on both surfaces of the leaves, but the greater number o])en on 

 the under side — the only i)oiut of difference noted. 



M. oenotherae, Peck. 



HypophyUous, or very sparingly produced above. S])ots 

 conspicuous, usually purple, scarcely thickened; iccidia crow(U'd 

 in a somcAvhat 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 .«; spermagonia few, very incons])icuous. on the upper 

 side of the leaf in the center of the spots, lioney-ycllow. 



