43 



its recidium on Euphorbia Cyparissias. For further information consult 

 Klebahn, Rostpilze 330. 1904. 



The Aecidium Euphorbia-, S. dates from 1822 and is the secidium of Uro- 

 juyces Euphorbia-, C. & P. (see Magnus, Ber. Deutsch. Bot. Ges. 14: 376. 

 28 Dec. 1896) and under this name we give all references to Aecidia on 

 different Euphorbia, since evidently the greater part relate to the aecidium 

 of Uromyccs Euphorbia, C. & P. Some references, especially those pertain- 

 ing to the Western States, may perhaps be distinct but at present their devel- 

 opment is unknown. Several species of Uromyccs are known on Euphorbia 

 in North America but some of them are believed to be destitute of an secidial 

 stage. See also Arth. Bot. Gaz. 29: 270. 20 April 1900 and Jour. Myc. 8 : 

 51. 30 June 1902 and Carl. Science II. 13 : 250. 15 Feb. 1901. 



Muhl. Cat. PI. Am. Sept. 1 ed. 104. 1813. 2 ed. 107. 1818. 



S. Syn. Car. 69 (43) no. 455. 1822. 



Lea, Cat. PI. Cin. 71. 1849. 



Cke. Handbook 537. 1871. 



Frost in Cat. PI. Amherst 84. 187s. 



Johnson, Bull. Minn. Acad. 1 : 296. 1877 and Rept. Minn. Surv. 5: 

 85. 1877. 



Pk. Rept. N. Y. Mus. 29 : 77- 1878. 



Pk. Rept. N. Y. Mus. 30 : 76. Sept. 1878. 



James, Jour. Cin. Soc. 2 : 67 (26). April 1879. 

 *Rav. Fung. Am. 484. 1881. 



Brendel, Flora Peoriana 1 ed. 362 (94). 1882. 2 ed. 69. 1887. 



Arth. Bull. Iowa Agr. Coll. 1884: 166. Jan. 1885. 



Burrill, Bull. 111. Lab. 2: 237. d. 1885 and Rept. 111. Ind. Univ. 12: 

 148. d. 1885. 

 *E11. & Ev. N. A. F. 1820. 1887. 



Cobb, Lht PI. Amherst 40. 1887. 



De Toni in Sacc. Syll. 7 : 823. d. 28 Oct. 1888. 



Bennett, Cat. PI. R. I. 89. 1888. 

 *EU. & Ev. N. A. F. 2215. Feb. 1889. 



Cockerell, Jour. Myc. 5 : 85. June 1889. 



Seymour, Proc. Boston Soc. 24 : 190. 8 Nov. 1889. 



Webber, Bull. Nebr. Exp. Sta. 1 : 331 (61). 18 Dec. 1889. 



Ell. in Cat. PI. N. J. 55- l88 9- 



Gall. Bull. U. S. Agr. Veg. Pathol. 8 : 55. 1889. 



Webber, Am. Nat. 24 : 178. Feb. 1890. 



Webber, Rept. Nebr. Agr. 1889 : 211 (71). 1890. 



Williams, Bull. S. Dak. Exp. Sta. 29 : 49. Dec. 1891. 

 *Seymour & Earle, E. F. 3S5. 1 May 1893. 



Halsted, Rept. N. J. Exp. Sta. 1892 : 349- 1893- 



Underw. Proc. Ind. Acad. 1893: 49. Aug. 1894. 

 *E11. & Ev. Fung. Columb. 338. 1894- 



Kellerm. & Werner, Geol. Ohio 7 2 : 346. Jan. 1895. 



Tracy & Earle, Bull. Miss. Exp. Sta. 34: 89. May 1895. 



Ell. & James in Holzinger, Contr. U. S. Nat. Herb. 3: 275. 23 Nov. 

 1895. 



McClatchie in Reid's Hist. Pasadena 61 5. 1895. 



McClatchie, Proc. S. Cal. Acad. 1 : 372. 5 June 1897. 



Atk. Bull. Cornell Univ. 3 : 21. 25 June 1897. 



Underw. & Earle, Bull. Ala. Exp. Sta. 80 : 209. 28 June 1897. 



Diet, in Engler & Prantl, Pflanzenfam. I 1 ** : 77. 1897. 



Snyder, Proc. Ind. Acad. 1896 : 217. 1897. 



Tubeuf-Smith, Diseases of Plants 410. 1897. 



Orton, Rept. Vt. Exp. Sta. 1 1 : 210. Sept. 1898 and Contr. Bot. Vt. 2 : 

 12. Sept. 1898. 



Hume, Proc. Davenport Acad. 7 : 252. 12 May 1899. 



