230 BROOKLYN BOTANIC GARDEN MEMOIRS 



Co., May 14, 1914, F. D. Bailey, 236/'; Philomath, April 26, 1914, 

 25/2; CorvalHs, April 28, 1915, 2612; Grant's Pass, Josephine Co., 

 Sept. 3, 1916, J. R. Weir, 181. 

 On Poaceae: II and III. 



Festuca confinis Vasey {Poa Kingii S. Wats.) — Steins Mts., Harney 

 Co., July 2, 1896, J. B. Leiberg, 2g45. 



Festuca idahoensis Elmer — Hilgard, Union Co., July 10, 1914, 

 1358, 1362; Redmond, Crook Co., July 2, 1914, 1424, 1430. 



Festuca rubra L.— Hilgard, Union Co., July 10, 1914, 1366; Mary's 

 Peak, Benton Co., Aug. 15, 1914, 1571, i573; Newport, Lincoln Co., 

 July 18, 1915,^207. 



Festuca siibulata Trin. — Ashland, Jackson Co., Sept. 10, 1914, 1563. 



The connection between this common western form on Festuca 

 with Aecidium abundans was shown by Arthur in 1910 (Mycologia 4: 

 27. 1912). In three trials, using telial material on F. confinis, col- 

 lected in Colorado and Utah, infection resulting in pycnia and aecia 

 on Symphoricarpos racemosus was obtained. 



60. PucciNiA AcETOSAE (Schum.) Koern. Hedwigia 15: 184. 1876. 

 Uredo Acetosae Schum. Enum. PI. Saell. 2: 231. 1803. 



On Polygonaceae : 



Rumex acetosella L. — Maples Station, Tillamook Co., Sept. 15, 

 1915, F. D. Bailey, 3102; Corvallis, Oct. 19, 1915, G. B. Posey, 3000. 



This species has been recorded previously from North America 

 only from Florida on R. hastatulus (Holway, North Am. Ured. i: 35. 

 1906). Specimens on that host referred to this species are in the 

 Arthur herbarium also from S. Carolina and Massachusetts and on 

 R. acetosella from Massachusetts, Florida, New York and Indiana. 

 All the specimens bear uredinia only. It is possible that some or all 

 of the material should be referred to Uromyces Acetosae Schroet., as 

 the two species are indistinguishable in the uredinial stage. 



61. PucciNiA AMBIGUA (Alb. & Schw.) Lagerh., in Bubak, Sitz. Ver. 



Bohm. Ges. Wiss. 1898, 28: 14. 1898. 



Aecidium Galii ambiguum Alb. & Schw. Consp. Fung. 116. 1805. 



Pnccinia difformis Kunze, Myc. Hefte i: 71. 1817. 



Allodus ambigua Arth. Result Sci. Congr. Bot. Vienne 345. 1906. 

 On Rubiaceae: 



Galium aparine L. — Wren, Benton Co., June 26, 1914, 1330; 

 Ashland, Jackson Co., Sept. 10, 1914, 3og6. 



This species possesses aecia and telia only in the life cycle. It 

 has been studied by Bubak (1. c.) who found that primary aecia were 

 followed by secondary aecia. Later Trebaux (Flora 81: 394-404. 

 1895) repeated this observation and conducted culture work con- 



