J'rtrdsifir Fiitiiji ol Illinois. 207 



On A'o.sv/.- Pulaski, May 4. 4487, May '.>, 4580: .lohiisou. 

 May 12, 4()40,4()41, May 1({ 470(); McLean, May 25. 4778, May 

 2<.),"4813; Champaign, .June 10, 4V)41: LaSalle, June 15,5000. 

 June 21, 5256; JoDaviess. Sept. 16,5052: O^^le, Sept. 2H. <)i:]l ; 

 Jersey, Oct, 12, 6278. 



What has been called Uredo Diiniafa, Pers., Cwouih miniatd, 

 Schl.. or Coleosporium miMiatum^ Lev., has been considered the 

 a^cidioform of Phragmidium nut cr omit urn., Pers., with which it 

 is certainly often associated. But it is very commonly found 

 on the green leaves, in the early part of the season, with Ph. 

 speciosnm on the twigs at the same time. Sometimes, however, 

 the teleutospores of Pli. niucronatnm occur later in the season 

 oil the ra^oma-aifected leaves or on other leaves of the same 

 ])l:int. 



All the numbers except 5V)52 and ()278 were accompanied 

 l)y the al)ove mentioned form. 



Ph. rubi-idaei, (Pers.) Winter. 



Tl., IIL Hypophyllous. Uredosori small, scattered, usu- 

 ally very numerous; uredospores obovate or elliptical, epispore 

 thill, sharply echinulate. 15-18 fi; teleutosori small, scattered, 

 powdery, black: teleutospores cylindrical, ends obtusely round- 

 ed, vertex furnished with a more or less elon^^ated, conical, or 

 often somewhat cylindrical hyaline apiculus. whole surface 

 very rough-warty, almost black, about six- to eight-septate, 

 27-38 by 67-120 /*: pedicel tinted near the s})ore. otherwise hy- 

 aline. a1)out one and a half times the length of the spore, from 

 above the middle downward elongate-elliptical, roughened. 



On leaves of HiibH.^ sfrigosus: McHenry, Aug. 20, 1177, 

 Aug. 23, 1232; Boone, Sept. 2. 1422, II.: Cook, Sept. 5. 144(), 

 II.: Stephenson. Se])t. 14. 58s2. IF.. TIL: JoDaviess, Sept. 20. 

 6012, II. 



The teleutosori are surrounded by many incurved colorless 

 (dry specimens) clavate paraphyses, but a careful examination 

 of the specimens failed to reveal them with the uredosori. 

 though these were over-mature, and the spores everywhere 

 scatteiv^d aiiioui;- the matted hairs (if the leaf. 



