32 



On Capsella bursa- pastoris, Putnam, 4, 1892; Montgomery, 18!»3 (Olive). 



On Radish, Putnam, 9, 1891 ; Johnson, 8, 1890 (Fisher). 



On Sisymbrium canesceus, Putnam, 5, 189o. 



( )n Brassica nigra, Johnson, 7, 1890 (Fisher); Tippecanoe, 8, 1891 (Arthur). 



On Brassica alba, Johnson, 7, 1890 (Fisher). 



On Lepidium Virginicum, Montgomery, 189o (Olive); Putnam, 4, 1894. 



On Dentaria sp., Montgomery, 1893 (Olive). 

 Albugo iPo:Ma:.i>i"AXDUKAN.v. (Schw.) Swingle. 



On Ipomcea hederacea, Putnam, 9, 189:;. 



On Ipomoea pandurata, Johnson, 9, 1890 (Fisher). 

 Aliji-go i'Ortulac.f. (D C.) Kuntze. 



On Portulaca oleracea, Putnam, 6, 1893; Johnson, 8, 1890 (Fisher); 

 Montgomery, 1893 (Olive) ; Tippecanoe 7, 1890 (Bolley). 

 Pi.Asjioi'ARA Ai'sTRALis (Speg.) Swiugle. 



On Sicyos angulatus, Johnson, 9, 1890 (Fisher). [Herb. U.S.] 

 Plasmopaka geraxii (Pk.) Berl. et De Toni. 

 . On Geranium Carolinianum, Putnam, 5, ls92 ; Vigo, 5, 1893. 

 Plasmoi-ara Hai.stedii (Farl.) Berl. et De Toni. 



On Bidens connata, Johnson, 9, 1890 (Fisher). 



On Bidens frondosa, Johnson, 8, 1890 (Fisher). 



On Helianthus annuus, Montgomery, 1893 (Olive). 

 Pi.asmopara ohdchens Schrot. 



On Impatiens sp., Putnam, 4, 1892. 



On Impatiens pallida, Tippecanoe, 5, 1893 (Arthur). 

 Plasmopaka viticola (B. and C.) Berl. et De Toni. 



On Vitis cordifolia, Johnson, 7, 1890 (Fisher). 



On Yitis (sp. cult.), Johnson, 9, 1890 (Fisher); Montgomery, 1893 (Olive). 

 Putnam, 7, 1893; Crawford, 9, 1889 (Arthur). 

 Peroxospora alta Fckl. 



On Plantago major, Johnson, 7, 1890 (Fisher) ; Putnam, 5, 1894. 

 Peroxospora corvdalis De Bary. 



On Dicentra Canadensis, Putnam, 4, 1892; 4, 1893. 



On Dicentra cucullaria, Montgomery, 1893 (Olive). 

 Peroxospora epfusa (Grev.) Rabenh. 



On Chenopodium sp., Putnam, 9, 1891. 



On Chenopodium album, Johnson, 9, 1890 (Fisher). 

 Peroxospora ficari.i-, Tul. 



On Ranunculus sp., Putnam, 4, 1893. 



