352 GEOLOGY OF OHIO. 



124. PODOSPHJJ3RA Kunze. 



PODOSPH.ERA OXYACANTILE (DC.) D. By. 



Quite common on plum and cherry. On cultivated cherry, Columbus, C. M. 

 Weed, Freda Detmers ; Dayton, Joseph Potts ; on Spirea tomentosa ( t-odos- 

 phcera minor Howe) Lancaster, W. A. Kellerman. 



125. MICROSPH^ERA Lev. 



Mjcrosph^Era ai.ni (DC.) Winter. Lilac Mildew. 



This species occur on a wide range of host plants. Everywhere upon Lilac ; 

 on Enonymus atropurpureus ( conidial stage only ) ; Ross Co., W. A. Keller- 

 man ; Columbus, Aug. D. Selby ; on Sambucus canadensis, Columbus, Aug. 

 D. Selby; on Platanus occidentalis (conidial stage) Columbus, Aug. D. 

 Selby; on Castanea sativa atnericana, Fairfield Co., E. V. Wilcox, E. E. Bogue, 

 C. M. Weed ; Ross Co., W. A. Kellerman. 



MlCROSPH-ERA DIFFUSA C. & P. 



On Desm odium cauescens, Columbus, C. M. Weed, Freda Detmers, Aug. D. 

 Selby. 



MicrospelEra EivEVATA Burrill. 



On Catalpa bignonoides, Columbus, C. M. Weed. 



MlCROSPH-ERA EUPHORBIA B. & C. 



On Euphorbia corollata, Columbus, E. M. Wilcox. 



Microsph-ERA QUERCINA (Schw.) Burrill. 

 General on the oaks. 



Microsph^Era ravenelii Berk. 



On Gleditschia triacanthos, Columbus, C. M. Weed, W. A. Kellerman ; Warren 

 Co., Ross Co., Fairfield Co., W. A. Kellerman. 



Microsph^Era russeixii Clint. 



On Oxalis stricta, Columbus, W. A. Kellerman, on Oxalis recurva, E. M, Wilcox. 



Microsph^Era vaccinii ( Schw.) C. & P. Huckleberry Mildew. 



On Gaylussacia resinosa, Fairfield Co., Aug. D. Selby; ou Vaccinium vacillai:s, 

 Meigs Co., P. L. Pfarr ; Fairfield Co., Aug. D. Selby. 



XVII. PERISPORIACE^). 



126. ASTERINA Liv. 



Asterina gatji/theri^E Curtis. • 



On Gaultheria procumbens, Fairfield Co., Aug. D. Selby, W. A. Kellerman. 



126a. DIMEROSPORITJM Fckl. 



Dimerosporitjm coiainsii (Schw.) Thuem. 



On Amelanchier, Fairfield Co., W. A. Kellerman. 



