2io BOTANICAL GAZETTE [march 



upon hosts related to Solidago. The range of both U. Solidaginis 

 and U. Junci in North America is similar, both occurring in the 



western part. 



Uromyces Junci-ejffusi Sydow resembles U. Solidaginis in the 

 telial stage; the aecial connection is not known for this form. 

 Curiously not Puccinia Solidaginis Peck, but P. Asteris Duby 

 (both are short-cycled) shows a correlation with Uromyces Solida- 

 ginis. Of the short cycle species of Puccinia upon Solidago in 

 America, one, P. Virgauriae (DC.) Lib., is more eastern, possesses 

 stromata, and has thin- walled teliospores. P. Solidaginis, although 

 a western form, has very large teliospores. P. Asteris, however, 

 is very similar to Uromyces Solidaginis in gross and microscopic 

 characters, except in the possession of 2-celled teliospores. Puc- 

 cinia Asteris is a more common rust, and while rare west of the 

 Rockies, is found over most of North America. Figs. 19-22 

 illustrate U. Solidaginis from America and Europe and P. Asteris. 



Cooke (loc. cit) reported Uromyces Solidaginis from Maine. 

 Collections from Eastern North America are not at hand; further 

 doubt may be attached to Cooke's reported collection from the 

 fact that he states that the spores are reticulated. Griffith's West 

 American Fungi 361, although issued as Puccinia Solidaginis, is 

 in reality Uromyces Solidaginis. 



9. Uromyces amoenus Sydow, Ann. Myc. 4:28. 1906. 



O. Pycnia unknown. 



III. Telia hypophyllous, densely grouped and often confluent 

 on circular purplish spots, 2-8 mm. across, the margin of the spots 

 yellow, roundish, small, o . 2-0 . 7 mm. across, early naked, compact 

 pulvinate, dark chestnut-brown, covered by the tomentose pubes- 

 cence of the host, ruptured epidermis inconspicuous; teliospores 

 globoid, obovoid, or ellipsoid, 16-23X20-30 ju, usually rounded 

 above and narrowed below; wall dark golden-brown or cinnamon- 

 brown, moderately thick, 1.5-2.5 /x, apex thicker, 4-7 ix, smooth; 

 pedicel pale yellowish, up to the length of the spore. 



On Carduaceae: Anaphalis margaritacea occidentalis Greene, Oregon; 



A. subalpina (A. Gray) Rydb. (.4. margaritacea subalpina A. Gray), Idaho, 



Oregon, Washington, Wyoming, British Columbia. 



Type locality: Washington, on "Gnaphaliunt (Anaphalis) margaritacea." 

 Distribution: Wyoming to British Columbia and Oregon. 



