70 

 Infection experitne-nts with p3 - ■p ny-f^^ y'ftfl. conidia frqm 

 Anthoxanthum odoratTO. infected orieinally vd th ascos-pores of C. purpurea 

 from rve . (248) 



Broimis sterilis 



Calarnagrostis arundinacea 



Pestuca pratensis 



Hordeum morinimi 



Hordetmi vulgare 



Poa compressa 



Poa sudetica 



It does not go to: 



Bromus erectus . 



Grlyceria f liutans 



Olyceria distans 



Lolium italicxon 



iolium perenn© 



Lolaum temolentum 

 tardus stricta 



Poa alpina 



Poa annua 



Anthoxanthum odoratum is easily infected with. 0, Tmrpuiea 

 of rye, and the conidia produced on it in turn infect the typical hosts of 

 this species, Sclerotia are, however, never or very seldom formed on 

 ■Anthoxanthum odoratum by the typical C. tforpurea of rye. A. special hiologie 

 race of the same, which we shall consider next, produces abundant sclerotia 



on the host. 



Claviceps •purr>urea . S&DtsanEitBai forming biologic race 



on Anthoxanthum odoratum (252) 



