JACKSON: UREDINALES OF OREGON 241 



This species may be distinguished from other grass rusts having 

 the teUa long covered by the epidermis primarily on the urediniospore 

 characters. They are not accompanied by paraphyses, the wall is 

 moderately thin, 1.5-2 /:, pale yellow to cinnamon brown, and the pores 

 are scattered. The telia may or may not be surrounded by stromal 

 hyphae and are rather narrow, 13-24 ix. 



86. PucciNiA Clintonii Peck, Rept. N. Y. State Mus. 28: 61. 1876. 

 On Scrophulariaceae : 



Pedicularis bracteosa Benth.? — N. slope Mt. Jefferson, Aug. 16, 

 1914, H. P. Barss & G. B. Posey, 2^45. 



Pedicularis racemosa Dougl. — N. slope Mt. Jefferson, 7,000 ft., 

 Aug. 13, 1914, H. P. Barss, 2544. 



87. PucciNiA Cnici Mart. Fl. Mosq. 226. 1817. 



Puccinia Cirsii-lanceolati Schroet., Cohii, Krypt. Fl. Schl. 3': 

 317- 1887. 

 On Carduaceae: 



Cirsium lanceolatiim (L.) Scop. — Corvallis, Oct. 21, 1911, F. D. 

 Bailey, 1963, Mar. 6, 1914, G. H. Godfrey & F. D. Bailey, 1965; Elk 

 City, Lincoln Co., Aug. 20, 1914, 1964; The Dalles, Wasco Co., 

 July I, 1914, 1334; Portland, Aug. 21, 1915, E. Bartholomew (Barth. 

 Fungi Columb. 5053). 



88. Puccinia Comandrae Pk. Bull. Torrey Club 11: 49. 1884. 

 On Santalaceae: 



Comandra umhellata (L.) Nutt. — Dufur, Wasco Co., July 30, 1914, 

 2504; Hood River, May 18, 1915, 2660, July 22, 1915, 3141. 



This micro-form, found commonly in the Rocky Mt. and Pacific 

 coast states, possesses teliospores having similar morphological char- 

 acters to those of the heteroecious rust P. pustiilata (Curt.) Arth., 

 which has aecia on Comandra and uredinia and telia on Andropogon. 

 A number of such correlations between micro-forms and the telia of 

 heteroecious forms whose aecia occur on the same host have been 

 pointed out by Travelbee (Proc. Ind. Acad. Sci. 1914: 233. 1915) 

 among species occurring in North America. Dietel (in Engler &: 

 Prantl, Die Nat. Pflanzenf. i^**: 69. 1897) was apparently the first 

 to point out this sort of correlation between P. mesneriana Thiim. 

 and P. coronata (P. Rhamni). 



89. Puccinia commutata Sydow, Monog. Ured. i: 201. 1902. 

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



On Valerianaceae : 



Valeriana occidentalis Heller — Hilgard, Union Co., July 10, 1914, 

 154I' 



