1920] BISBY— UROMYCES 211 



Exsiccati: Ellis and Ev., Fungi Columbiani 1795; Barth., N.Am. Ured 



1385, 1584. 



Monog 



21:570. 1912 



Several collections of this rust are in the Arthur herbarium. 

 Although the hosts of some collections are labeled Anaphalis 

 margaritacea, it would appear that the name A. subalpina should 

 be used for almost all collections in hand (compare Coulter and 

 Nelson, New Manual of the Botany of the Central Rocky 

 Mountains, p. 537). 



Ellis and Everhart's Fungi Columbiani 17Q5 was issued as 

 Uromyces Gnaphalii Ellis and Ev., but is U. amoenus. U. Gnaphalii 

 has been found to be a synonym of U. iniricatus Cooke. 



10. Uromyces Rudbeckiae Arth. and Holw. Bull. Iowa 



Agric. Coll. 1884. 154- 1885. — Caeomurus Rudbeckiae Kuntze, 

 Rev. Gen. 3 3 :45o. 1898; Telospora Rudbeckiae Arth., Result. 

 Sci. Congr. Bot. Vienne 346. 1906. 



O. Pycnia unknown. 



III. Telia hypophyllous, occasionally also epiphyllous, densely 

 gregarious upon brownish spots, paler below, 1-10 mm. across, 

 rather circinate, small, 0.2-0.8 mm, in diameter, early naked, 

 compact, pulvinate, cinnamon brown, soon cinereous from germina- 

 tion, surrounding epidermis not noticeable; teliospores ellipsoid, 

 obovoid, or pyriform, 11-17X19-32 ju, rounded, acute, or obtuse 

 at the apex, narrowed below; wall yellowish or very pale chestnut- 

 brown, thin, 1 /x, apex thicker, 5-8 ju, smooth; pedicel hyaline, 

 twice as long as the spore or less. 



On Carduaceae: Rudbeckia laciniata L. (R. ampla A. Nels.), Colorado, 

 Illinois, Indiana, Iowa, Michigan, Minnesota, Missouri, Montana, Nebraska, 

 New Mexico, North Dakota, Pennsylvania, Wisconsin, Wyoming, Ontario; 

 Rudbeckia sp., Texas. 



Type locality: Decorah, Iowa, on Rudbeckia laciniata. 



Distribution: Ontario and Pennsylvania to Montana and Texas. 



Illustration: Arth. and Holw. Ured. Exs. Ic. 1: pi. i.fig. 1. 



Exsiccati: Arth. and Holway, Ured. Exs. Ic. 1: Barth., Fungi Columb. 

 4394; Barth., N.Am. Ured. 299, 1099, 1397; Brenckle, Fungi Dak. 274; El] 

 and Ev., Fungi Columb. 2097; Ellis, N.Am. Fungi 1439; Rab.-Wint., Fungi 

 Eur. 3412; Sydow, Ured. 1305, 1962. 



