/'(H'dslflc Fn)i(/f of fllinoix. 105 



The teleutoform occasionally occurs on tlie midribs of the 

 leaves and (in No. 2152) even on the blade. 



In 1797 Persoon (Disp. Meth. ) named this plant Puccinia 

 poli/goiti, but afterwards wrote P. Polygon/ Aviculnrife (Syn. 

 Fung. [1801], p. 227.) SchrJiter in 1869 (Rost u. Br. Pilze 

 Schlesiens) adopted the name [Iromi/ces Avicnlarice. Fuckel 

 l)ublished the name as Uromyces Polyyoni in 1869 (Syml>. 

 Myc, }). 64). 



U. euphorbise, C. P. 



11., 111. Amj)hi<j^(Mious; spots purple or yellowish; sori 

 scattered, round, small. 1 1. Sori distinguished by their lighter 

 brown color, spores globose, minutely roughened, pale brown, 

 15-21 M in diameter. III. Spores subglobose, oval or obovate. 

 slightly apiculate, warty, 15-18 by 18-25 ^, interspersed with 

 numerous slender paraphyses; pedicels about twice the length 

 of the spore, slender, hyaline, very fragile and deciduous, leav- 

 ing a small portion attached to the spore. 



Leaves generally stained with red or purple; soriani])higenous, sub- 

 rotund, slightly convex, surrounded by the ruptured epidermis, ferru- 

 ginous-brown or blackish-brown; spores subglobose, rough, often with a 

 large nucleus, about .0008 in. in diameter; peduncle short, hyaline. — 

 Peck, XXX Rep. N. Y. Mus. p. 90. 



On leaves of Euphorhia macuhifa : McLean, July 16. 2352; 

 McHenry, Aug. 22, 1221, Aug. 25, 1301: LaSalle, Sept. 16. 

 1548 and 1550; Lee, Sept. 8, 5712; Rock Island, Sept, 21, 1616; 

 Jersey, Oct. 14, 6316. E. hypericifolia : Adams, July 6, 5481, 

 II., III.; McLean, July 7, 2353, Oct. 6, 1802; Tazewell, July 22. 

 2354; Piatt, Aug. 15, 1064, Aug. 17, 1104; Rock Island, Sept. 21, 

 1615; Ogle, Sept. 23, 6143; Union, Oct. 21, 1840. E. dentuta : 

 Adams, July 6, 5427, II., III., 5428. II., III.; Jersey, Oct. 12, 

 6263, II., III. E. heterophylh: Ogle, Aug. 28, 5641. II., III., 

 Sept. 23, 6144, Sept. 28, ()182, II., III.; Lee, Sept. 9, 5754, II.. 

 III. Euphorhia sps.: McHenry. Sept. 1, 1409. 



The pedicels are deciduous, as are those of ( '. Iloini. Peck, 

 and the surface of the spore is similarly roughened. yEcidiidti 

 eiipIiorhi((', Pers.. accompanies the Proniya'S in Nos. 1064, 1548. 

 1616, and 2353, but it is believed by most l)otanists to have no 

 connection with this Croinyccs. 



