218 BROOKLYN BOTANIC GARDEN MEMOIRS 
on species of Abies and Picea, obtaining the development of pycnia 
and aecia on Picea excelsa. This is the only case in which culture 
investigations have shown the aecia of Pucciniastrum to occur on 
Picea. 
31. UREDINOPSIS COPELANDII Sydow, Ann. Myc. 2: 34. Feb. 1904. 
Uredinopsis Atkinsoni Magn. Hedwigia 43: 123. Mar. 1904. 
Peridermium balsameum Peck, Rept. N. Y. State Mus. 27: 104. 
1875= op-p: 
On PINACEAE: I. 
Abies grandis Lind|.—Trail to Sulphur Springs, Corvallis, Benton 
Co,.; Nov. 7, 1914,,3330; Corvallis, Feb: 2; 1914, 3300. 
Abies nobilis Lindl.—Mary’s Peak, Benton Co., Feb. 7, 1914, 
F. D. Bailey, 3337, Aug. 15, 1914, 3334; 33351 3383073330: 
On PotypopiAcEséE: II, III. ’ 
Athyrium cyclosorum Rupr.—Hoover, Linn Co., Aug. 19, 1914, 
H. P. Barss & G. B. Posey, 3032; Mary’s Peak, Benton Co., Aug. 
15, 1914, 3033, 3034; Elk City, Lincoln ‘Co:, Aug: 20; 1o14tez0 ar 
Hood River Co., July 23, 1915, 303z; Grant’s Pass, Josephine Co., 
Sept. 5, 1916, J. R. Weir, 258; Yaquina, Lincoln Co., July 17, 1915, 
O35: 
There seems to be no good reason for separating U. Copelandu 
Sydow from U. Atkinsonwi. All gradations in the length of the beak 
of the urediniospores are found on the above collections. Most of the 
material has urediniospores with long beaks and some of the collec- 
tions show spores with both long and short beaks. 
Field observations as well as a study of morphological characters 
would support the view that the aecia commonly referred to Pert- 
dermium balsameum occurring on Abies grandis and A. nobilis in 
western Oregon are genetically connected. 
Fraser (Mycol. 5: 236. 1913) has cultured U. Atkinsonu by 
sowing aeciospores of Peridermium balsameum on Aspidium Thelepteris 
followed sparingly by the development of uredinia. 
32. UREDINOPSIS PTERIDIS Dietel & Holway, Ber. Deuts. Bot. Ges. 
132: 13312 $5895: 
Aecidium pseudo-balsameum Diet. & Holw. Erythea 7: 98. 1899. 
Peridermium pseudo-balsameum Arth. & Kern, Bull. Torrey Club 
332430: 1906: 
On PrInAcEAE: I. 
Abies amabilis (Loud.) Forb.—Whitewater Creek, near Mt. Jeffer- 
son, Aug. 11, 1994, H.P.Barss & G. B. Posey, 3204: 
Abies grandis Lindl.—Corvallis, Aug. 1910, 3299, May 8, 1909, 
comm. Clarence D. Learn, April 29, 1914, F. D. Bailey, 3303; Ump- 
