26 THE WEST VIRGINIA FLORA 



SPORODINIA Link. 

 S. ASPERGILLUS (Scop.) Schroet. 



On dead Agaricus and Boletus, Sept. 10, 1893 (Nuttall, 

 1196). 



PERONOSPORACEAE. 



CYSTOPUS Lev. 

 C. CANDIDUS (Pers.) Lev. 



On living leaves of Dentaria diphylla, Monongalia Co., 

 at Little Falls (Millspaugh). On Brassica nigra, July 8, 

 1893 (Nuttall, 1082). On Sisymbrium oincinalc; Raphanus 

 sativus and Lepidium Virginicum (Sheldon, 686, 1577, 3020, 

 3291; 1792, 3035; 4457). 

 C. IPOMOEAE-PANDURATAE (Schw.) Stev. & Sw. 



On Ipomoea pandurata (Sheldon, 701, 706, 784, 919, 1956, 

 3159, 3246). 

 C. TRAGOPOGONIS (Pers.) Schroet. 



On Senecio aureus and Ambrosia artemisiae folia (Sheldon, 

 2960, 3080). 



C. PORTULACAE (DC) Lev. 



On Portulacca oleracea, July 8, 1893 (Nuttall, 1083). 

 C. BLITI (Biv.) DeB. 



On Amaranthus rctronexus, July 20, 1893. Spores 18 to 

 22 x 15 to 18 ju (Nuttall, 1615). 



PLASMOPARA Schroet. 

 P. VITICOLA (B. & C.) Berl. & De Ton. 



On fruit of Vitis Labrusca, Monongalia Co., near Morgan- 

 town (Millspaugh). 

 P. CUBENSIS (B. & C.) Humphrey. 



On cucumbers, Mason, near Elwell, and on Musk Melons, 

 Ohio, near Elm Grove (Sheldon, 1018, 2009, 2097). 

 P. OBDUCENS Schroet. 



On Impatiens sp. (Sheldon, 2297). 

 P. GERANII (Pk.) Berl. & DeToni. 



On Geranium maculatum (Sheldon, 651, 2967). 

 P. RIBICOLA Schroet. 



On Ribes sp. (Wild gooseberry) (Sheldon, 2446). 

 P. HALSTEDII (Farlow) Berl. 



On Ambrosia trinda (Sheldon, 2957). 



PHYTOPHTHORA DeBary. 

 P. INFESTANS (Mont.) DeB. 



On living leaves and tubers Solanum tuberosum, Monon- 

 galia Co., near Morgantown (Millspaugh). 



