G3 



The decay of ihis which follows is accomplished by- 

 other agents, such as the ubiquitous '■'■Bacterium tcrmo.'''' 



The facts here given supply reason for the methods of 

 treatment most relied on by growers for checking the pro- 

 gress of the fungus. These are pulling off the plants or 

 haulm and high hilling up or ridging of the roots. Dry 

 weather, also b}'^ killing the conids and zoospores or hinder- 

 ing their entry into the ground is very helpful. 



Had I reached the above conclusion early enough in the 

 season I would have tried a crucial experiment by carefully 

 covering the ground around some of the plants close up to 

 the stem and thus preventing access of conids to the tubers. 

 But it was too late then and no opportunity has since oc- 

 curred, the fungus being of comparatively rare occurrence 

 here. 



ADDITIONS TO OHIO FUNGI. 



F. L. STEVENS. 



No species of the following genera have hitherto been 

 reported from the state: Actinonema; Apospha^ria, Cicino- 

 bolis, Cylindrosporium,Marsonia, Rhamphospora, and Asco- 

 chyta. 



The following eighty-seven species are new to the state: 



Actinonema rosae, Fr. on Rosa Columbus 



A scochyta lycopersici, Brun. on Solanum dulcamara " 



Aposphaeria sp., on Fragaria " 



Cercospora armoracine, Sacc. on Nasturtium armoracia, Franklin Co 



C. heucliera;, E. & M. on Heuchera, Franklin and Erie Cos 



C. lippai, E. & E. on Lippa Franklin Co 



C. oculata, E. & K. on Vernonia Highland Co 



C. avicularis. West, on Polygonum Pickaway Co 



C. dubia, (Reiss) Wint, on Chenopodium and Atriplex 



Oxford and Columbus 



