26 THE WEST VIRGINIA FLORA 



SPORODINIA Link. 

 S. Aspergillus (Scop.) Schroet. 



On dead Agaricus and Boletus, Sept. lo, 1893 {Nuttall, 

 I 196). 



P E R O N O S P O R A C E AE. 



CYSTOPUS Lev. 

 C. CANDiDUS (Pers.) Lev. 



On living leaves of Dentaria diphylla, Monongalia Co., 

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

 1893 {Niittall, 1082). On Sisymbrium officinale; Raphamis 

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

 3291; 1792, 3035; 4457). 

 C. Ipomoeae-Panduratae (Schw.) Stev. & Sw. 



On I porno ea pandurata (Sheldon, 701, 706, 784, 919, 1956, 

 3159, 3246). 

 C. Tragopogonis (Pers.) Schroet. 



On Senecio aureus and Ambrosia art cmisiae folia {Sheldon, 

 2960, 3080). 

 C. Portulacae (DC) Lev. 



On Portulaeca oleracea, Julv 8, 1893 (Alittall, 1083). 

 C. Bliti (Biv.) DeB. 



On Amaranthus retrofle.xus, July 20, 1893. Spores 18 to 

 22 X 15 to 18 IX {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 macidatum (Sheldon, 651, 2967). 

 P. ribicola Schroet. 



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

 P. Halstedii (Farlow) Berl. 



On Ambrosia trifida (Sheldon, 2957). 



PHYTOPHTHORA DeBary. 

 P. INFESTANS (Mont.) DeB. 



On living leaves and tubers Solanum tuberosum, Monon- 

 galia Co., near Morgantown (Millspaugh). 



