Parasitic Finiyi of Illinois. _",!:> 



ularly scattered, sliort, deeply and mther coarsely split and 

 much recurved; spores subglobose or elliptical (vertical diame- 

 ter shorter), epispore 'thin, apparently smooth, contents finely 

 granular, 15-18 by 18-20 /*: spermagonia clustered above in 

 the centre of the definite spots, otherwise sparsely scattered on 

 both sides of leaf. 



On Impatiens: Union, April 29, 4396: Pulaski, May 4, 

 4483, May 8, 4559; McLean, May 31,4864, June 24, 5280, July 

 2, 2425, July 5, 2434, July 7, 2436, July 15, 5557; LaSalle. 

 June 16, 5206; Adams, July 3, 5388, 5389, July 7, 5451. 



M. ptelese, B. & C. 



Mostly hypophyllous. Spots distinct, yellow, thickened: 

 a?cidia irregularly clustered, cylindrical, rather long, becoming 

 numerously and deeply split and much recurved; spores sub- 

 globose or elliptical, large, conspicuously tuberculate, 21-25 by 

 24-30 /t; spermagonia not found. 



Spots pallid, in a hollow on the under side of the leaves ; pseudo- 

 podia crowded, short, radiated. Berkeley, Grev., Vol. Ill , p. 61. 



On leaves of Ptdea trifoliate: Adams, June 22, coll. C. A. 

 Hart; Peoria, July 10, 6516. 



There is scarcely any doubt but that the plant described 

 above is the . Ecidium ptelew of Berkeley and Curtis, though the 

 description in Grevillea is insufficient, and the original speci- 

 men in the Curtis collection is so poor that its characters can- 

 not be made out. 



.<!E. onobrychidis, Burrill. 



Hypophyllous. Spots distinct or confluent, somewhat ef- 

 fused, yellowish brown; aecidia subcircinate, crowded, short, 

 border abruptly recurved, rather coarsely dissected: spores sub- 

 globose or elliptical, epispore rather thin, studded with low, 

 obtuse tubercles, sometimes united in ridges, 19-24 /*: sperm- 

 agonia clustered in the center of spots mostly on the upper 

 surface, minute, reddish brown. 



On Psoralea Onobri/chis: LaSalle, June 20, 5249. 



M. psoralese, Peck. 



Hypophyllous. vEcidia uniformly distributed over the 



