146 ERIKSSON, MARSBALL WARD*S RESEARCHES ON BROWN RUST. 



to the pressing need of modern histological methods in the field 

 of phytopathological research. By the fuller paper whicli 

 we are promised, we may expect that one of the gaps which 

 at present exist in our knowledge of the life-history of the 

 fungus — the period of the fungeous life as mycelium in the 

 tissues of the host plant — will be as fully filled as the 

 present stand-point of histological technics will permit. 



I cannot conclude these remarks without attracting atten- 

 tion to perhaps an unimportant question regarding a name 

 which has awakened my surprise. Marshall Ward terms 

 the fungus with which he is occupied Puccinia dispersa 

 (Eriks.). It is true that the species of fungus to which 

 Marshall Ward's form belongs, was described in the year 

 1894 under the name of Fuccinia dispersa Eriks. & Henn.,^ 

 but it should also be observed that some j^ears later (1899)^ 

 that collective species was broken up into no less than G 

 different species. Since thajb date the name Fuccinia dis- 

 persa Eriks, signifies only the brown rust which is found on 

 rye, while, on the other hand, the fungus on the Bromes ought 

 correctly to be termed Fuccinia hromina Eriks. 



Stockholm, May 7, 1903. 



^ J. Eriksson & E. Henning, Die Hanptresultate einer neuen Ihiter- 

 suchung über die Getreideroste. Sorauer's Zeitschr. f. Pfl.-Krankh., 1894, 

 p. 203. — J. Eriksson. Über die Specialisierung des Farasitismus bei den 

 Getreiderostpilzen. Ber. d. D. Hot. Ges., 1894, p. 816. 



^ J. Eriksson, Nouvelles Etudes sur la Roitille Brune des Céréales. 

 Ann. d. Sc. Nat., Bot.. T. 9, Paris, 1899, p. 271. 



Tryckt den 2Ü juni 1903. 



Stockholm 1903. Kimgl. Boktryckeriet. 



