Parasitic, Fungi of Illinois. 187 



usually furnished with punctiform to wart-like projections, 

 18-25 by 30-45 ^; pedicels hyaline, fragile, not usually longer 

 than the spore. 



Uredo fiosculosorum, Alb. & Schw. Uredo black, sori scattered, 

 minute, subrotund, pulvinate, powder rather loose, spores unequal, 

 subcaudate. Albertini and Schweinitz, Conspect. Fung. p. 128. 



On Cirsium discolor: Adams, July 0, 5425, II. C. lanceo- 

 latum: LaSalle, June 19, 5237, II., Sept. 29, 6241, II., III.; 

 Tazewell, July 22, 2410, II., Lee, Sept. 8, 5718, II.; Stephen- 

 son, Sept. 14, 5890, II.; JoDaviess, Sept. 18, 5986, II., III.; 

 Rock Island, Sept. 21, 1608, II., III., Sept. 24, 1645, II., III., 

 Sept. 26, 1663, II., III., Sept, 27, 1674, II., III.; Ogle, Sept. 23, 

 6149, II.; Fulton, Oct. 1, 1770, II., III., McLean, Oct. 6, 1794, 

 II., III., Oct. 12, 1841, II., III., 1843, II., III., Oct. 13, 1858, 

 II., III., Oct. 18, 1890, II., III.; Champaign, Nov. 9, 2389, II., 

 III., Nov. 12, 2390. Taraxacum dens-leonis: McLean, May 

 25 ; 4776, II., May 20, 4828, II., July 6, 2391, II., July 16, 2392, 

 II., July 25, 2393, II., Oct. 11, 1835, II.; Champaign, June 8, 

 4902, II., Nov. 7, 2277, II., Ill; LaSalle, June 19, 5229, II., 

 Sept. 14, 1540; Adams, July 7, 5447, II., July 11, 5501, II. ; 

 McHenry, Aug. 22, 1218, II.; Boone, Sept. 2, 1419, II.; Ste- 

 phenson, Sept. 13, 5828, II.: Rock Island, Sept. 21, 1613, II., 

 Sept. 24, 1653, II. Hieracium Canadense: McHenry, Aug. 20, 

 1197; Boone, Sept. 2, 1426; Stephenson, Sept. 13, 5833, II., 

 III.; Ogle. Sept. 23, 6130, II., III.; LaSalle, Sept. 30, 6256, IT., 

 III. 



Under this species are included the forms that have been 

 known on Cirsium as P. cirsii, Lasch., and P. compositantiti. 

 Schl., on Taraxacum as P. variaUlis, Grev., and on Hieracnnn 

 as P. hieracii, Mart. The teleutospores of American specimens 

 are very minutely warty, or apparently smooth, agreeing witli 

 Winter's remarks on this species in Hedwigia, XIX., p. 20. 

 Nearly or quite all the specimens on Cirsium (except No. 2410) 

 present both uredo- and teleutof orms, but on Taraxacum teleu- 

 tospores are found only in specimens collected late in the sea- 

 son (No. 2277). 



