236 BROOKLYN BOTANIC GARDEN MEMOIRS 



73. PucciNiA BICOLOR Ell. & Rv. Bull. Torrey Club 27; 572. 1900. 

 On Cichoriaceae : 



Hieraciiim cinereum Howell — Hood River, July 22, 1915, 3325. 



Hieracium Scouleri Hook. — White Pine, Baker Co., June 1913, 

 J. R. Weir, 7. 



Hieracium sp.— Durfur, Wasco Co., June 30, 1914, 1338. 



This very distinct micro-form is known otherwise only from the 

 type collection made at Waitsburg, Wash., May 7, 1900, on H. Scouleri, 

 by R. M. Horner and distributed in E. & E. Fungi Col. 1370. 



74. PucciNiA Bistort AE (Strauss) DC. Fl. Fr. 6: 61. 18 15. 



Uredo Polygoni Bistortae Strauss, Ann. Wett. Ges. 2: 103. 1870. 

 On Polygonaceae : 



Polygonum imbricatum Nutt. — Oregon?, Aug. 1880, Thos. Howell. 



Polygonum Neivherryi Small — -Crater Lake, Klamath Co., Sept. 22, 

 1913, E. P. Meinecke, Cr Pk D (2) 14; N. slope Mt. Jefferson, 2,600 

 ft., Marion Co., Aug. 16, 1914, H. P. Barss & G. B. Posey, J/pj, 

 Aug. 27, 1916, H. P. Barss, 3393. 



This species may be distinguished from other North American 

 Polygonum rusts by the medium-sized teliospores (16-21 by 26-35 /i) 

 with wall of uniform thickness, without hyaline umbo. It is not 

 known elsewhere in North America on the first mentioned host and 

 otherwise only from Washington on P. Neivherryi. Aecia are un- 

 known . 



75. PucciNiA Blasdalei Diet. & Holw. Erythea i: 248. 1893. 

 On Alliaceae: 



Allium attenuifolium Kellog — Corvallis, June 2, 1915, C. E. Owens, 

 2681. 



Allium acuminatum Hook. — Hood River Co., June 10, 1917, Leroy 

 Childs. 



This rust may be distinguished from other Allium rusts by the 

 strongly developed stroma in the telial sori, and the tendency to form 

 confluent telia covering large areas on the stems and leaves. The 

 teliospores are large (16-26 by 40-61 fi), thickened to 4-10 n at the 

 apex. 



76. Puccinia Calochorti Pk. Bot. Gaz. 6: 228. 1881. 



Allodus Calochorti Arth. Result Sci. Congr. Bot. Vienne 345. 

 1906. 

 On Liliaceae: 



Calochortus macrocarpus Dougl. — Redmond, Crook Co., July 21, 

 1912, Kirk Whited, 3182; Hills near Malheur River, Harney Co., 

 June 6, 1901, W. C. Cusick, 2544; Powder River Mts., Baker Co., 

 Aug. 1896, C. V. Piper, 2460. 



