THE ^CIDIAL STAGE OF RUSTS. 



43 



Table tit. — Sumrnary of experiments to determine the vitality of successive uredo genera- 

 tions of various grain rusts — Coutiniied. 



PUCCINIA GRAMINIS TRITICI ON BARLEY FROM WHEAT -Continued. 



PUCCINIA GRAMINIS HORDEI ON WHEAT FROM BARLEY.^ 



ISeries sent from Washington, D. C, to Minneapolis, Minn. 



2 Extreme heat in greenhouse. 



3 Accidentally mixed with Pitccinia simplex; discarded. 

 * Notes not taken. 



5 The original material wivs obtained from barley November 14 and November 22, 1900. It was trans- 

 ferred to wheat and w;is kept on wheat continuously from that time. Notes on the inoculations from 

 November 14 and 22, respectively, to March 30, 1907, have been mislaid or lost; but six series of successful 

 inoculations were made in each "case at Washington, D. C, and on March 30 the successfully inoculated 

 plants were sent to Minnesota. The table gives the results from inoculations from this material, beginning 

 with April 17, 1907. 



« Series sent from Minneapolis, Minn., to Washington, D. C, October 8, 1907. 



216 



