278 BROOKLYN BOTANIC GARDEN MEMOIRS 



192. Uromyces Jacksonii Arth. & Fromme, Torreya 15: 260. 1915. 

 On Poaceae: 



Agrostis Hallii Vasey — Corvallis, Sept. 4, 1914, 1576. 



Agrostis maritima Lam. — Hood River Co., Aug. 26, 1915, E. 

 Bartholomew, 5Q71 (Barth. Fungi Columb. 4992). 



Deschampsia caespitosa (L.) Beauv.- — Toledo, Lincoln Co., July 

 19, 1915, jip4. 



Deschampsia elongata (Hook.) Munro- — Orenco, Washington Co., 

 June 13, 1914, 1396; Corvallis, July 6, 1914, 2658, type, July 29, 

 1914, 1438; Glendale, Douglass Co., Aug. 17, 1914, 1408. 



Hordeum juhatum L.- — Umatilla, Umatilla Co., July 11, 1914, 1376. 



Hordeum nodosum L. — Portland, May 21, 1914, F. D. Bailey, 1583. 



In addition to the above collections this species is now recognized 

 on Agrostis pallens from California and Muhlenhergia Lemmoni from 

 Arizona and New Mexico. Collections have also been made on 

 Deschampsia elongata in Washington and on Hordeum nodosum in 

 Washington and California. 



193. Uromyces Junci (Desmaz.) L. Tul. Ann. Sci. Nat. IV, 2: 146. 



1854- 



Puccinia Junci Desmaz. PI. Crypt. 81. 1825, 



Nigredo Junci Arth. N. Am. Flora 7: 238. 1912. 

 On Carduaceae: L 



Arnica cordijolia Hook. — Austin, Grant Co., Aug. 1915, J. R. W^eir, 

 190. 

 On Juncaceae: II, III. 



J uncus halticus Willd. — Redmond, Crook Co., July 2, 19 14, 1426; 

 Umatilla, Umatilla Co., July 11, 1914, 1372; Toledo, Lincoln Co., 

 July 19, 1915, jjpi. 



This species develops its aecia on various Carduaceae. In Europe 

 cultures have been conducted by various authors, according to Klebahn 

 (Die Wirtsw. Rostp. 329. 1904), showing that the aecia occur on 

 Pulicaria dysenterica {Inula dysenterica). 



In America Arthur (Mycol. 4: 22. 1912, 7: 77. 1915) has shown 

 by culture experiments that aecia occur on Carduus and Ambrosia. 

 The aecia on Arnica are referred here on morphological grounds. 



194. Uromyces Junci-effusi Sydow, Monog. Ured. 2: 290. 1910. 

 Puccinia Junci Schw. Trans. Am. Phil. Soc. II. 4: 295. 1832. 



(Not P. Junci Desmaz. 1825.) 

 Uromyces effusus Arth. Jour. Myc. 13: 193. 1907. (Not U. 



effusus DeToni. 1888.) 

 Nigredo Junci-effusi Arth. N. Am. Flora 7: 239. 1912. 



