Pfintslflr Finn/i of Illinoix. 187 



usiiiillv funiislu'd with puiictifoi-ni to wavt-likc itrojcctions, 

 18-25 ))y 80-45 u; jxMlict'ls liyaliiic, f'rii<4-ile. not usually lon<^er 

 than the spore. 



Uredo Jlonculosoriun, Alb. & Schw. Teredo black, sori scattered, 

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

 subcaudate. — Albertini and Schwelnitz, Conspect. Fung. p. 128. 



On (\'rs/inn discoloi-: Adams, July 0, 5425, 11. C. lancco- 

 latum: LuSalle. June lU, 5237, IT., 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, 1674,11., III.; Ogle, Sept. 23, 

 6149, II.: Fulton, Oct. 1, 1770, II., TIL, McLean, Oct. (5, 1794, 

 IT.. III.. Oct. 12, 1841, IL, IIL, 1843, II., III., Oct. 13, 1858, 

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

 III., Nov. 12, 2390. Tdraxaciini dens-Jeonis: McLean, May 

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

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

 4902.11., Nov. 7,2277, IL, IIL; LaSalle, June 19, 5229, IL. 

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

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

 phenson. Sept. 13, 5828, II. ; Rock Island, Sept. 21, 1613, IL, 

 Sept. 24, 1653, II. Hieracuun Cauadense: McHenry, Aug. 20. 

 1197; Boone, Sept. 2, 142(); Stephenson, Sept. 13, 5833, IL, 

 IIL; Ogle. Sept. 23, 6130. IL. TIL; LaSalle, Sept. 30. ()256, 1 1., 

 III. 



Under this species are included the forms that have been 

 kiu)wn on Cirsium as P. cirsii, Lasch., and P. roiiiposifannii, 

 Schl., on Taraxacum as P. rariahilis. Grev.. and on HIrran'inii 

 as J\ hier((rii, Mart. The teleutospores of American specimens 

 are ver}' minutely warty, or apparently smooth, agreeing with 

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

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

 ])resfnt both uredo- and teleutoforms. Imt on Tara.ninun teleu- 

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

 son (Xo. 2277). 



