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. 1: 246. 1907), using 
telial material from Koeleria cristata from Colorado, obtained, as a 
result of infection experiments, the development of aecia on Berberis 
aquifolium. 
104. PUCCINIA GEMELLA Diet. & Holway, in Sydow’s Monog. Ured. 1: 
541. 1903. 
ON RANUNCULACEAE: 
Caltha biflora 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., 
Aus. 28, 1916, H. P: Barss, 3407. 
A micro-form, differing from P. Treleasiana Pazsch., which occurs 
in the Rocky Mt. region on Caltha sp., in the smooth spores. 
105. PuccINnIA GENTIANAE (Strauss) Link, in Willd. Sp. Pl. 67: 73. 
1825. 
Uredo Gentianae Strauss, Ann. Wett. Ges. 2: 102. I810. 
ON GENTIANACEAE: 
Gentiana oregana Engelm.—Sumpter, Baker Co., July 16, 1913, 
J: Re Weir, ror. 
106. PucciniA GILIAE Hark. Bull. Cal. Acad. 1: 34. 1884. 
ON POLEMONIACEAE: 
Navarettia tntertexta (Benth.) Hook.—Corvallis, Aug. 1898, Moses 
Craig, July, 1910, 7727; Umpqua Valley, Douglass Co., June, 1887, 
Thomas Howell, 7835; Hood River, Aug. 17, 1888, L. F. Henderson 
(673), 1120. 
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- 
Zenkts 4207. 1804: 
Uredo glumarum Schmidt. Allg. Oekon. Fl. 1: 27. 1827. 
Puccinia neglecta West. Bull. Soc. Bot. Belg. 2: 248. 1863. 
Trichobasis glumarum Leyv.; Cooke, Myc. Fung. 208. 1865. 
ON POACEAE: 
Elymus glaucus Buckl.—Hood River Co., May 14, 1914, 1590, 
1590, 1597, July 23, 1915, 3199. 
Hordeum Gussoneanum Parl.—Corvallis, June 4, 1914, F. D. 
Bailey, 1385. 
Hordeum vulgare L.—Moro, Sherman Co., June 11, 1915, F. K 
Ravn and A. G. Johnson. 
