(S> 



[Reprinted from Mycologia, Vol. VIII . No. 3, May. 1916.I 



249 



CULTURES OF UREDINEAE IN 1915' 



J. C. Arthur 



The present article is the fourteenth of a series of reports 2 by 

 the writer upon the culture of plant rusts, beginning in 1899 and 

 completing seventeen consecutive years. With this report it is 

 proposed to bring the series to a close. Hereafter the record of 

 such cultures as may be undertaken will be made in whatever con- 

 nection may be found advantageous. To render the work brought 

 together in the present series more readily- accessible, and to 

 make clear the changing point of view dominating the work, it 

 is proposed to prepare an index and a brief historical statement, 

 to be issued in the early future. 



During the year 191 5, little traveling was undertaken for the 

 purpose of securing culture material and information. Two trips 

 were made by the writer, the first one in April, the second in June, 

 the first one in company with Mr. H. E. Ford, in order once more 

 to explore the Kankakee marshes, in the northern part of Indiana, 

 especially to gather information about Puccinia Seymonriana on 

 Spartina. The rust was found in the greatest profusion, and 

 specimens were taken from different parts of the region. Only 

 one of these specimens showed viability, without much strength, 

 and no infection was obtained from it. It is difficult to surmise 

 what could cause such low viability, especially as the winter was 

 mild and favorable to vegetation. 



Correspondents in various parts of the country, as in previous 



ears, have sent material for cultures, of both the rusts and the 



living host plants. A number of correspondents took extra 



trouble to respond to requests for particular species, and to such 



1 Presented before the Botanical Society of America at the Columbus meet- 

 ing, December 30, 191 5. 



2 See Bot. Gaz. 29:268-276; 35:10-23; Jour. Myc. 8:51-56; 10:8-21; 

 ii : 50-67 ; 12 : 1 1-27 ; 13 : 189-205 ; 14 : 7-26 ; Mycol. 1 : 225-256 ; 2 : 213-240; 

 4: 7-33, 49-65; 7: 61-89. 



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