BOTANY. 351 



Erysiphe communis (Wallr.) Fr. Clematis Mildew. 



On Aqnilegia canadensis, Columbus, Freda Detarers ; on Clematis virginiana 

 and Clematis sp. (cult.) Columbus, Aug, D. Selby, Freda Detmers; on Clematis 

 sp. ( cult.) Waynesville, W. A. KeHerman ; on Desmodium canescens, Colum- 

 bus, Aug. D. Selby. Quite common on other species of Ranunculacese and 

 Leguminosse. 



ERYSIPHE GAl,EOPSrDIS DC. 



On Scutellaria lateriflora, Columbus, Aug. D. Selby, Wm. C. Werner; Fairfield 

 Co., Aug. D. Selby; on Stachys aspera glabra, Columbus, W. A. Kellerman; 

 on S. palustris, Columbus, Aug. D. Selby; on Chelone glabra, Ashtabula Co., 

 Sara F. Goodrich. 



Erysiphe Graminis DC. Wheat Mildew. 



Conidial stage only seen ; on Triticum vulgare, Columbus, Freda Detmers ; Lima, 

 W. A. Kellerman; on Poa pratensis, Columbus, W. A. Kellerman; on Agro- 

 pyrum, Ashtabula Co., Sara F. Goodrich. 



Erysiphe wriodendri Schw. Tulip-tree Mildew. 



On Liriodendron tulipifera, Columbus, Aug. D. Selby; Fairfield Co., Aug. D. 

 Selby. Especially conspicuous by the dense felted mycelium. 



122 UNCINULA Lev. 



UncinulA circinata C. & P. 



On Acerrubrum, Fairfield Co., Aug. D. Selby; on Acer saccharum, Columbus, 

 C. M. Weed. 



Uncinula flexuosa Peck. 



On Aesculus glabra, Columbus, C. M. Weed, F. M. Webster. 



Uncinula macrospora Peck. 



On Ulmus Americana, Fairfield Co., W. A. Kellerman, Aug. D. Selby, Freda 

 Detmers ; Columbus, Wm. C. Werner, Aug. D. Selby ; on U. fulva, Columbus, 

 C. M. Weed, Wm. C. Werner. 



Uncinula necaTOR (Schw.) Burr. ( U. ampelopsidis Peck; U. spiralis B. & C.) 

 Grape Mildew. 



General throughout the state on species of Vitis and Ampelopsis. 



Uncinula salicis (DC.) Wiut. 

 Common on willows. 



Uncinula Columbiana Selby. 



On Scutellaria lateriflora, Columbus, Aug. D. Selby. 



123. PHYLLACTINIA Lev.. 



Phyllactinia suffulta (Rib.) Sacc. 



Common on Oak, Beech, Chestnut, Carpinus, Catalpa; also on Phlox panicu- 

 lata, Colunfbus, Aug. D. Selby. 



