476 



Journal of Agricultural Research 



Vol. X. No. 9 



It is noteworthy that the stemrust of rye and the stemrust of wheat 

 have so manv hosts in common, especially since wheat is practically 

 immune to P. graminis secalis and rye is very highly resistant to P. 

 graminis tritici. 



Table XXXI. — Results of inoculations with urediniospores of P. graminis avenae 



Original host. 



Dactylis glomeraia 



Do 



Do 



Do 



Do 



Do 



Do 



Do 



Do 



Do 



Agrostis exarata 



Dactylis glomeraia 



Avena saliva 



Agrosiis exarata 



Panicularia pauciflora . 



Dactylis glomerata 



A grostis exarata 



Dactylis glomerata 



A grostis exarata 



Dactylis glomerata 



Do 



Do 



Do 



Do 



Do 



Avena saliva 



Immediate host. 



Avena sativa. 



....do 



....do 



. . . .do 



.... do 



....do 



....do 



do 



do 



do 



do 



do 



do 



do 



do 



do 



do 



de 



do 



.QO. 



....do 



Avena faiua . 

 Avena sativa. 

 Avena fatua. 

 Avena sativa. 

 do 



Plant inoculated. 



A gropyron caninum .... 

 Agropyron cristatum. . . . 

 A gropyron desertorum . . 

 Agropyron elangatum . . . 

 Agropyron imbricatum. . 

 Agropyron intermedium 



Agropyron re pens 



A gropyron smiihii 



Agropyron ienerum 



Agrostis alba 



do 



Agrostis stolontfera 



do 



do 



do 



Alopecurus geniculatus . 



do 



Alopecurus pratensis . . . 



do 



Antkoxanikum odoraium 

 Arrhenatherum el alius . . 



do 



Avena fatua 



do 



Beckmannia erucaefor- 

 mis. 



.do. 



Trials. 



Re- 

 sult. 



480 

 7 



Des.'^ee of in- 

 fection. 



Moderate. 

 Light. 

 Strong flecks 



