JACKSON: UREDINALES OF OREGON 217 



Bailey, 1173, Nov. 4, 191 1, F. D. Bailey, 1171, June 18, 1914, F. D. 

 Bailey, 3218, July 29, 1914, 1480; Hilgard, Union Co., July 10, 1914, 

 1533^ 1535^ Glendale, Douglass Co., July 17, 1914, 1505, North slope 

 Mt. Hood, Aug. 7, 1914, 1488; Whitewater Ranger Station, West 

 slope Mt. Jefferson, H. P. Barss & G. B. Posey, 32ig; Ashland, 

 Jackson Co., Sept. 10, 1914, 3221. 



Epilobium brevistylum Barbey^ — Corvallis, July 14, 1914, G. B. 

 Posey, 3220. 



No successful culture work has been conducted with this form, as 

 here interpreted, either in Europe or America. Aecia doubtless occur 

 on species of Abies. 



From field observations it is quite evident that in western Oregon 

 at least this species overwinters in the uredinial stage. 



29. PucciNiASTRUM Pyrolae (Pers.) Dietel, in E. & P. Nat. Pfl. 



i^**: 47. 1897. 



Aecidium Pyrolae Pers. Gmel. Syst. Nat. 2: 1473. 1791. 



Uredo Chimaphilae Peck, Ann. Rep. N. Y. State Mus. 46: 33. 

 1893. 

 On Pyrolaceae: 



Chimaphila umbellata (L.) Nutt. (C occidentalis Rydb.)- — Spencer 

 Creek, Klamath Co., 5,000 ft., July 10, 1903, E. B. Copeland, 3714 

 (Sydow, Ured. 1795); Whitewater Creek along trail to Hanging Valley, 

 Mt. Jefferson, Aug. ii, 1914, H. P. Barss & G. B. Posey, 1908; North 

 slope Mt. Hood, Aug. 7, 1914, 1614. 



Pyrola secunda L., Klamath Co., July 10, 1903, E. B. Copeland 

 (Sydow, Ured. 1791). 



30. PucciNiASTRUM SPARSUM (Wint.) E. Fischcr, Beitr. Krypt. 



Schweiz 2^: 469. 1904. 



Melampsora sparsa Wint. in Rab. Krypt. Fl. i^: 245. 1881. 

 On Ericaceae: 



Arbutus Menziesii Pursh — Myrtle Creek, Douglass Co., June 8, 

 1914, F. D. Bailey, 1837; Glendale, Douglass Co., July 17, 1914, 

 1298; Ashland, Jackson Co., Sept. 10, 1914, 1838; Corvallis, April, 

 191 1, 3374; Grant's Pass, Josephine Co., Sept. 3, 1916, J. R. Weir, 

 244. 



Arctostaphylos Manzanila Parry — Grant's Pass, Josephine Co., 

 Sept. 3, 1916, J. R. Weir, 245, 247. 



Arctostaphylos nevadensis A. Gray — Northwest slope Mt. Jefferson, 



Aug. 14, 1914, H. P. Barss & G. B. Posey, 3290. 



■ No aecial collections have been referred to this species in America. 



Fischer (Cent, fiir Bakt. 46: 333. 191 6) has cultured this species. 



He used germinating telial material on Arctostaphylos alpina and sowed 



