280 BROOKLYN BOTANIC GARDEN MEMOIRS 



No aecia in America have been found which can be referred to this 

 species. There is, however, no evidence at present available for be- 

 lieving the American species different from the European. 



197. Uromyces minimus Davis, Bot. Gaz. 19: 415. 1894. 

 Nigredo minima Arth. Result Sci. Congr. Bot. Vienne 344. 1906, 



On Poaceae: 



Muhlenbergia comata (Thumb.) Benth. — ^W^allowa Valley, Wallowa 

 Co., July 28, 1900, Wm. C. Cusick. 



Muhlenhergia racemosa (Michx.) B.S.P. — ^Wallowa Valley, Wal- 

 lowa Co., July 28, 1900, Wm. C. Cusick. 



198. Uromyces OBLONGA Vize, Grev. 5 : no. 1877. 

 Uromyces minor Schrot. Krypt. F. Schles. 3^: 310. 1887. 

 Uromycopsis minor Arth. Result Sci. Congr. Bot. Vienne 345. 



1906. 

 On Leguminosae: 



Trifolium albopurpuretim T. & G.^ — Corvallis, E. R. Lake, 322Q. 



Trifolium dtihium Sibth. — Corvallis, Apr. 10, 1914, F. D. Bailey, 

 1522; Orenco, Washington Co., June 13, 19 14, 3228; Yaquina, 

 Lincoln Co., July 17, 20, 1915,3100; Gerlinger, June 22, 1914, G. B. 

 Posey, 3231. 



Trifolium eriocephalum Nutt. — Corvallis, July, 1910, iq8q. 



Trijolium Hallii Howell — Corvallis, June 6, 1899, E. R. Lake, 

 3232, May 12, 1903, A. H. Post, 3230. 



Trifolium microdon H. & A. — Corvallis, May 11, 1907, E. R. Lake. 

 1498. 



Trifolium oliganthumSteud . — Corvallis, May ii, 1914, F. D. Bailey, 



2513- 



Trifolium prociimhens L. — Corvallis, June 22, 1901, L. C. M., 

 1833, July, 1910, 1176. 



Trifolium tridentatum Lindl. — Philomath, June 24, 1914, 1345; 

 Corvallis, May 28, 1903, E. R. Lake, 3236, May 11, 1914, F. D. 

 Bailey, 3235. 



This opsis-form is very common on native Trifolium sp. The 

 original collection by Harkness was reported as occurring on " Bur 

 cloves" now considered an error for Trifolium. 



199. Uromyces occidentalis Diet. Hedwigia Beibl. 42: 98. 1903. 

 Nigredo occidentalis Arth. N. Am. Flora 7: 252. 1912. 



On Leguminosae: 



Lupinus sp. — ^Grant's Pass, Josephine Co., Sept. 3, 1916, J. R. 

 Weir, 248. 



200. Uromyces perigynius Halsted, Jour. Myc. 5:11. 1889. 

 Nigredo perigynia Arth. Result Sci. Congr. Bot. Vienne 344. 1906. 



