84 



21. Peronospora POLYGON! Thiiiiieii. (/'. nniiicis Aut. p. p.) 



On Polyf/onum scandens L., Johnson, 1893:33: — Hamilton. 7:1907; 

 Putnam. 8:1907. 



22. Peronospora potentillae de Bary. 



On Potentilla inonsepaletisis L. (P. norregica L. ). Hamilton. 

 7:1907; Putnam, 8:1907. 

 Upper Iowa University. 

 Fayette, Iowa. 



