JACKSON: UREDINALES OF OREGON 215 
3247; Odell, Hood River Co., Aug. 5, 1914, 1618; Crater Lake, 
Klamath Co., Sept. 21, 1913, E. P. Meinecke, Cr Pk D (2) 2; Portland, 
Aug. 24, 1915, E. Bartholomew (Barth., N. Am. Ured. 1482). 
This species is separated from P. pustulatum largely on the basis 
of culture investigations. All of the culture work has been conducted 
with the above host species or other members of the same genus or 
section of Epilobium. European investigators have amply demon- 
strated the connection of this form with aecia on Abies (Klebahn, 
Die Wirtsw. Rostpilze 393. 1904). In America, Fraser, working in 
Nova Scotia (Mycol. 4: 176. 1912), was the first to conduct culture 
experiments. He obtained, in three trials, the development of aecia 
on Abies balsamea, from sowings with teliosporic material from C. 
angustifolium. With the aecia thus obtained he sowed back to 
Chamaenerion and obtained uredinia. Weir & Hubert (Phytopath. 
6: 373. 1916) conducted similar work with Idaho material and suc- 
ceeded in obtaining the development of aecia on Abies lasiocarpa. 
The aecia thus obtained were sown back on the telial host (Phytopath. 
7: 109. 1917), with the result that uredinia were developed in 
abundance. 
25. PuUCCINIASTRUM GALII (Link) Fischer, Ured. d. Schweiz 471. 
1904. 
Caeoma Galu Link, in Willd. Sp. Pl. 6?: 21. 1825. 
ON RusiAceEseE: II. 
Galium triflorum Michx.—Corvallis, April 29, 1914, F. D. Bailey, 
1992, May 9, 1914, 1991, July 5, 1914, H. P. Barss, 1996, June 29, 
1914, G. B. Posey, 13173, July 10, 1915, 3104; Oregon City, Clackamus 
Co., Aug. 20, 1915, E. Bartholomew, 5934 (Barth. N. Am. Ured. , 
1679); Grant’s Pass, Josephine Co., Sept. 3, 1916, J. R. Weir, 287. 
This species is known to the writer from North America only from 
the above collections and a specimen collected by J. W. Macoun in 
British Columbia in 1915, one from Palmer Lake, Colorado, Sept. 6, 
1913, by E. Bethel, both in the Arthur Herbarium, and a collection 
made by Dr. H. Fitzpatrick and the writer at Michigan Hollow Swamp 
near Ithaca, N. Y., July,1916. All are on G. triflorum. ‘The species 
is evidently common in western Oregon and if aecia are developed, 
doubtless occur on Abies grandis. Field observations made by the 
writer, however, would indicate that this rust winters over in the 
uredinial stage. 
26. PUCCINIASTRUM GOODYERAE (Tranz.) Arth. N. Am. Fl. 7: 105. 
1907. 
Uredo Goodyerae Tranz. Trudi S. Peterb. Obshch. Est. Otd. Bot. 
235/255) L693: 
