I*iiriisif/r FiiDi/i of niinois. KiH 



U. spermacoces, (Sehw. ) Curt. 



TI., in. Aini)hi<j;enous. on stems and leaves; spots, none 

 observed: sori numerous, scattered, very prominent, rounded, 

 black, surrounded by the upturned epidermis. [T. Spores 

 subi<lobose, yellowish, very minutely warty, 21-25 by 22-27 /u. 

 III. Spores subglobose, smooth, uniformly very dark colored, 

 24-27 by 80 /*: [)edicels ])ersistent, about 8-4 times the len^rth 

 of the spore. 



On stems and leaves of D/'odia feres: Union, Oct. 2'"), lUVM, 

 Oct. 29, 2122. Nov. 1, 21U9. The uredo form was collected in 

 Union Co., An^r. 1880, by C. W. Butler. 



U. Rudbeckiae, Arth. & Hoi. (in lit. ). 



Hyp()j)liyllous; spots pale, then l)rown or black, numer- 

 ous, scattered; sori small, densely clustered, somewhat circinat- 

 ing, slightly raised, clusters plane, epidermis at length vanish- 

 ing with no remains around the cinnamon-colored sori: spores 

 oblong-obovate, obtuse or obtusely pointed, pallid, about 12 by 

 20 ju ; pedicel slender, hyaline, somewhat longer than the spore. 



On Riidheckia lac'iniaid : McHenry. Aug. 24. 1273: Ste- 

 phenson, Sept. 21, 6084. 



The spots resemble some forms of Fucci)tla ((sferi.s, the 

 leaf soon breaking away, leaving holes as if eaten by an insect. 



U. Howei, Peck. 



III. Spots none: sori liypogenous, scattered, indefinitely 

 clustered, often confluent, surrounded by the remains of the 

 ruptured epidermis, blackish purple; spores oval or subglobose, 

 warty, 18-21 by 21-25 .u; pedicels about twice the length of 

 the spore, very fragile, breaking off. leaving a small portion at- 

 tached to the spore, which therefore ap])ears to be verv short- 

 pediceled. 



liypogenous, sori scattered or subconfluent, surrounded by the 

 ruptured epidermis, from one-half to one line in diameter; spores 

 brown, subglobose, roughened with slight indentations {?), .OOOHo to 

 .0010 in. in diameter.— Peck, 2?A Rpt. N. Y. State Museum [1873], p. 58. 



On leaves of Asclepins conuifi: (^hampaign, Aug. 11. IOKk 

 Cook. Sept. 8. 2851: Lee, Sept. U. 5755; Stephenson. Sept. 18. 



