350 GEOLOGY OF OHIO. 



MUCOR RAMOSUS Bull. 



Waynesville, Thos. G. Lea (Cat.) 



118. FRANKIA Brunch. 



Frankia ceanothi Atk. 



On Ceanothus americanus, Fairfield Co., W. A. Kellerman. 



XV. CHYTRIDIACE^. 



119. SYNCHYTRIUM DeBary. 



Synchytrium decipienS Farl. 



On Amphicarpaea comosa, Nebraska (Pickaway Co.), Columbus, W. A. Keller- 

 man. 



XVI. PERISPORIACE^. 

 (ERYSIPHEiE, LeveillS. Powdery Mildew, White Mildew.) 



120. SPH^ROTHECA Lev. 



Sph-^rotheca castagnei Lev. 



On Bidens frondosa, Columbus, Aug. D. Selby ; on Erechtites, Columbus, Aug. 

 D. Selby. 



Sph^rotheca htjmtjw (EC.) Burr. Hop Mildew. 



On Agrimonia eupatoria, Lancaster, W. A. Kellerman. 



Sph^rotheca MORS-TJVyE ( Schw.) B. & C. Gooseberry Mildew. 



Reported over the state on cultivated gooseberries, particularly on English 

 varieties. 



Sph;erotheca pannosa ( Wallr.) Lev. Rose Mildew. 



On cultivated roses ; Athens Co., Aug. D. Selby. Common on cultivated ro/es 

 generally. 



Sph^erotheca phytoptophila Kell. & Swingle. Hackberry Knot Mildew. 



On Phytoptus twig-tufts of Celtis occidentalis, Lima, W. A. Kederman ; Colum- 

 bus, Aug. D. Selby. Probably all over the state, wherever the host occurs. 



121. ERYSIPHE (Hedw.) Lev. 



Erysiphe cichoracearum DC. {E. lamprocarpa) Verbena Mildew. 



The commonest of all the mildews, particularly on species of Compositae, Bor- 

 raginacese, and Verbenaceae ; also on Parietaria pennsylvanica, Columbus, 

 Aug. D. Selby; on Hydrophyllum macrophyllum, Pickaway Co.. W. A. Keller- 

 man ; Fairfield Co., Aug. D. Selby ; on Dahlia ( cult ) Fairfield Co., W. A. Kel- 

 lerman; Columbus, Aug. D. Selby; on. Phlox sp. (cult.) Fairfield Co., W. A, 

 IOIlerman. 



