Aug. 27, 1917 Puccinia graminis on Cereals and Grasses 



48: 



Table XXXIII. — Results of inoculations with urediniospores of P. graminis agrostis 



Original host. 



Iimnediate host. 



Plant inoculated. 



Degree of in- 

 fection. 



Agrostis alba 



Do 



Do 



Do 



Do 



Agrostis stolonifera. 



Do 



Do 



Do 



Agrostis alba 



Do 



Do 



Do 



Do 



Do 



Do 



Do 



Do 



Do 



Agrostis stolonifera. 



Do 



Do 



Agrostis alba 



Agrostis alba 



do 



do 



do 



Avena sativa 



do 



do 



do 



Agrostis alba 



do 



do 



do 



do 



Hordeum vulgare . . 



Agrostis alba 



do 



Auena sativa 



A grosiis alba 



do 



Secale cereale 



Agrostis stolonifera . 



A grostis canina .... 



Agrostis alba 



Alopecurus gsniculatus 



Alopecurus pratensis . . 



Antlwzanthum oJora- 

 tum. 



Avena sativa 



....do 



....do 



Bromus inermis 



Bromus tectorum 



Calamagrostis canaden- 

 sis. 



Dactylis glomerata 



Holcus lanatus 



Hordeum jubalum 



Hordeum vulgare 



do 



Koeleria cristata 



Phalaris canariensis . . . 



Phleum pratense 



Poa compressa 



Secale cereale 



do 



Triticum vulgare 



do 



do 



Heavy. 



Moderate to 

 heavy. 



Weak. 



Do. 



Moderate. 



Do. 

 Heavy. 

 Moderate. 



Weak. 



Do. 

 Moderate. 



Weak. 



Summary of results of inoculations with P. graminis agrostis: 



Hosts found naturally infected: Agrostis alba L, A. stolonifera Vasey. 



Easily infected by artificial inoculation: A ^roi-^w canina L-, Alopecurus 

 geniculatus h., A. pratensis L., Brotnus tectoritm L., Dactylis glomerata L., 

 Holcus lanatus L., Koeleria cristata (L.) Pers. 



Weakly infected by artificial inoculation: Avena sativa h-, Calama- 

 grostis canadensis (Michx.) Beauv., Hordeum vulgare ly., Secale cereale h. 



