JACKSON: UREDINALES OF OREGON 247 



The aecia of this species have often been confused with those of 

 P. graminis (cf. 151). Arthur in 1908 (Mycol. i: 246. 1907), using 

 teHal material from Koeleria cristata from Colorado, obtained, as a 

 result of infection experiments, the development of aecia on Berheris 



aquijolium. 



104. PucciNiA GEMELLA Diet. & Holway, in Sydow's Monog, Ured. i: 



541. 1903. 

 On Ranunculaceae : 



Caltha hifiora DC. — N. slope Mt. Jefferson, 6,000 ft., Aug. 13, 

 1914, H. P. Barss & G. B. Posey, 1624; foot of Mt. Jefferson, 5,000 ft., 

 Aug. 28, 1916, H. P. Barss, J407. 



A micro-form, differing from P. Treleasiana Pazsch., which occurs 

 in the Rocky Mt. region on Caltha sp., in the smooth spores. 



105. PucciNiA Gentiaxae (Strauss) Link, in Willd. Sp. PI. 6-: 73. 



1825. 



Uredo Gentianae Strauss, Ann. Wett. Ges. 2: 102. 1810. 

 On Gentianaceae : 



Gentiana oregana Engelm. — Sumpter, Baker Co., July 16, 1913, 

 J. R. Weir, igi. 



106. Puccinia Giliae Hark. Bull. Cal. Acad, i: 34. 1884. 

 On Polemoniaceae : 



Navarettia intertexta (Benth.) Hook. — Corvallis, Aug. 1898, Moses 

 Craig, July, 1910, 1121; Umpqua Valley, Douglass Co., June, 1887, 

 Thomas Howell, 1835; Hood River, Aug. 17, 1888, L. F. Henderson 

 {673), 1 120. 



This is a hemi-form distinct from P. plumbaria (cf. 150) which 

 is an opsis-form. In P. Giliae the telia are early naked and the spores 

 smooth. In P. plumbaria the telia are long covered by the cinereous 

 epidermis and the spores are finely and closely verrucose. 



107. Puccinia glumarum (Schmidt.) Erikss. & Henn. Zeits. Pflan- 



zenkr. 4: 197. 1894. 



Uredo glumarum Schmidt. Allg. Oekon. Fl. i: 27. 1827. 



Puccinia neglecta West. Bull. Soc. Bot. Belg. 2: 248. 1863. 



Trichobasis glumarum Lev.; Cooke, Myc. Fung. 208. 1865. 

 On Poaceae: 



Elymus glaucus Buckl. — Hood River Co., May 14, 1914, 1590, 

 1596, 1597, July 23, 1915, 3199. 



Hordeum Gussoneanum Pari. — Corvallis, June 4, 1914, F. D. 

 Bailey, 138$. 



Hordeum vulgare L. — Moro, Sherman Co., June 11, 1915, F. K 

 Ravn and A. G. Johnson. 



