JACKSON: UREDINALES OF OREGON 263 



Beckniannia erucaeformis (L.) Host. — Corvallis, Aug. 8, 1915, 

 J 026a. 



Dactylis glomerata L. — Cottage Grove, Lane Co., July 14, 1914, 

 i6yo; Corvallis, July 6, 1914, 1666; Clatsop, Clatsop Co., Nov. 3, 



1913, iijS>' Philomath, Jan. 6, 1914, 1084. 



Deschampsia elongata (Hook.) Munro — Glendale, Douglass Co., 

 July 17, 1914, 1410; Ashland, Jackson Co., Sept. 10, 1914, 1566, 1568; 

 Wren, Benton Co., June 26, 1914, I32g; Garden Home, Multnomah 

 Co., July 20, 1915, 3157, 3158. 



Elymns glaucus Buckl. — Philomath, Jan. i, 1914, 1152; Bend, 

 Crook Co., Sept. 11, 1916, J. R. Weir, 211. 



Festuca elatior L. — Wren, Benton Co., June 26, 1914, 1324; Cottage 

 Grove, Lane Co., July 14, 1914, 1348; Corvallis, July 29, 1915, jipo. 



Festuca megalura Nutt. — Corvallis, June 24, 1914, 1390, Aug. 13, 



1914, jjpi. 



Festuca myuras L. — Cottage Grove, Lane Co., July 14, 1914, i^Si- 



Festuca pacifica Piper — Corvallis, July 6, 1914, 1434, July 29, 1914, 

 1416. 



Hierochloe macrophylla Thurb. — Glendale, Douglass Co., July 17, 

 1914, 1411 (type of Uredo quinqueporula) . 



Hordeum distkhon L. — Corvallis, Aug. 20, 1915, H. P. Barss, 3184. 



Hordeum vulgare L. — Corvallis, Oct. 5, 1914, 3165. 



Lolium multiflorum Lam. — Cottage Grove, Lane Co., July 14, 

 1914, 134Q; Corvallis, Sept. 20, 1914, 1551; Tualatin, Washington 

 Co., July 10, 1914, F. D. Bailey, 135/. 



Lolium subulatum Vis. — Corvallis, March 22, 1915, 32//'. 



Phleum pratense L. — Cottage Grove, Lane Co., July 14, 1914, 1668; 

 Hood River, June 19, 1914, 1665; Springbrook, Yamhill Co., June 

 22, 1914, F. D. Bailey, 3136; Briton, Lincoln Co., July 17, 1915, 

 VanGundia, 3086, 308/; Corvallis, Aug. 13, 1914, 1662; Philomath, 

 Jan. I, 1914, 1151; Gresham, Multnomah Co., Aug. 7, 1913, F. D. 

 Bailey, 1140; Sumpter, Baker Co., June, 1913, J. R. Weir, 97; Grant's 

 Pass, Josephine Co., Sept. 2, 1916, J. R. Weir, 246. 



Triticum compactum Host. — Moro, Sherman Co., June 11, 1915, 

 F. K. Ravn & A. G. Johnson. 



Triticum vulgare L.^ — ^Corvallis, July 29, 1914, 1684; Hood River, 

 Aug. 5, 1914, 1669; Ashland, Jackson Co., Aug. 28, 1913, 1125; 

 Union, Union Co., Aug. 13, 1915, F. D. Bailey, 3133; Albany, Linn 

 Co., Aug. 22, 1900, E. B. Townsend, 3384. 



Since the classic researches of DeBary, who first demonstrated 

 heteroecism in rusts by showing that this species has aecia on Berberis, 

 this rust has received more attention on the part of investigators than 

 any other species. (Klebahn, Die Wirtsw. Rostp. 205-235. 1904.) 



