376 



Reed: The mildews of the cereals 



TABLE XXVII, — Results with TriticunivuIgareVWW-Contiuned, 



4J 



127a 

 128c 



Mar. 



" 30 

 June 24 



129a 



<l 



14Tb 



<c 



143b 



cc 



148b 



Nov. 



154c 



«< 



157a 



(( 



1 60c 



<( 



162a 



<< 



183a 



(C 



185a 



<c 



Source of convdia 



Tritl 



um vutgare 



c 



O ^3 



10 

 10 



10 



9 



9 

 II 



ir 



7 

 10 



10 



6 



4 

 4 



4 

 4 



4 



5 

 5 



4 

 4 

 4 

 4 



4 



6 



6 

 6 



7 

 7 



9 

 7 

 7 

 9 



9 



6 



6 



O o 



. o 



o c 



3 



3 



2 



4 



3 



4 



3 



2* 



2 



3 



4 

 2 



3 



3 

 I 



3 

 3 

 3 



3 



2 



2 



2 

 2 



3 



3 



4 



3 



2 



2 



6 

 2 



5 



4 



O 



c 

 o 



! d 



2 

 I 

 I 



3 



2 



3 

 4 



3 



2 



I 



2 



3 



3 



2 



2 



4 



o 



2 



2 



2 



5 

 3 



3 

 2 



2 



3 



3 

 6 



I 



2 



3 



2 



3 

 I 



Results 



Date 



Inoc. 

 plants 



I 



1908 



Jan. 30 



" 30 



10 



17 



17 



29 



29 



10 



24 

 24 



10 



30 



30 

 30 

 14 



Feb. 



« 



Mar. 



May 

 it 



June 

 July 



Aug. 



CI 



Oct. 



Nov. 



<( 

 cc 

 <i 



t< 



Dec. 



I 





Controls 



I 



+ + + 



+ + + 



+ 



+ + + 



29 

 29 



s 



5 



S 



5 



5 

 26 



26 



26 



7 



7 



7 



19 



19 

 20 



21 



5 



5 



+ + + 

 + + + 



+ + + 

 + + + 



++ + 



+ + + 

 + + + 



+ + + 



+ + + 



• • • 



+ + + 

 + + + 



+ + + 

 +++ 



N 



' Triticum sativum vulgare Hackel. 



2 Two small infected areas appeared on one leaf of a control. 



*Two leaves of each plant inoculated. 



So far as tested, all species of Avena are susceptible to the 

 oat mildew. All species of Triticum are likewise susceptible to 

 the wheat mildew. We find, however, that certain varieties of 

 Triticum dicocciim are practically immune to the wheat mildew. 

 Other varieties of this same species are entirely susceptible. Some 

 species of Hordeum are immune to the barley mildew, and the 

 same seems to be true of certain species of Secale with reference 

 to the rye mildew. 



