Fanisifif Finu/i'of Illinois. 163 



U. sperEQacoces,'(Schw.) Curt. 



II., III. Amphigeiious. on stems and leaves; spots, none 

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

 black, surrounded by the upturned epidermis. II. Spores 

 subglobose, yellowish, very minutely warty, 21-25 by 22-27 ,". 

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

 24-27 by 80 ,";■ pedicels persistent, _about 8-4 times the length 

 of the spore. 



On stems and leaves of Diodia /f'yr.s.-",. Union, Oct. 25, 1994, 

 Oct. 29, 2122. Nov. 1. 2199. The uredo form was collected in 

 Union Co., Aug. 1880, by C. W. Butler. 



U. Rudbeckise, Arth. & Hoi. (in lit. i. 



Hypophyllous; spots pale, then brown or black, numer- 

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

 ing, slightl}^ 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 fi: pedicel slender, hyaline, somewhat longer than the spore. 



On Rudheckia laciniata : McHenry. Aug. 24. 1278: Ste- 

 phenson. Sept. 21, 6084. 



The spots resemble some forms of Pticcinia asferis, the 

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



U. Howei, Peck. 



III. Spots none: sori hypogenous, 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 /t: pedicels about twice the length of 

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

 tached to the spore, which therefore appears to be very short- 

 pediceled. 



Hypogenous, sori scattered or subconfluent, surrounded by the 

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

 brown, subglobose, roughened with slight indentations (?), .00083 to 

 .0010 in. in diameter.— Peck, 23d Rpt. X. Y. State Museum [1873], p. 58. 



On leaves of Asclepias corn/tfi : Champaign, Aug. 11. 1016: 

 Cook. Sept. 8. 2351; Lee, Sept. 9. 5755; Stephenson. Sept. 13. 



