The Uredinales of Indiana IL 



H. S. Jackson, Purdue University. 



The following records of Indiana rusts are presented at this time 

 as the first supplement to the article by the writer on "The Uredinales 

 of Indiana," which was published in the Proceedings of the Academy 

 for 1915. All the unrecorded species which have come to hand since 

 the publication of that list are included, together with a few forms 

 which for one reason or another were omitted at that time. 



A large number of collections have been examined which add many 

 new localities and a number of new hosts for previously recorded 

 species. These are not included in the present list but will be recorded 

 at another time. The previous list contained records of 141 species 

 exclusive of unconnected species of Aecidium. The latter are included 

 in the present list and taken together with other accessions brings the 

 number of species known from the State to a total of 155. 



In order to avoid making new combinations the older and more fa- 

 miliar nomenclature is used. 



The writer is under great obligation to all those who have been 

 kind enough to furnish specimens for study, especially to Dr. J. C. 

 Arthur, Prof. G. N. Hoffer, Mr. C. C. Beam and Mr. J. B. Demaree, 

 who have placed their collections at his disposal. 



UREDINACEAE. 



142. Melampsora Euphorbiae-Gerardiana W. Miiller, Centr. Bakt. 

 17^:210. 1906. 



On Euphorbiaceae: 



Tithymaliis commutatus (Engelm.) K. and Garcke, West of High 

 Lake, Noble County, June 11, 1916, C. C. Beam 20083A; Wea Creek, 

 S. W. Lafayette, Tippecanoe County, April 22, 1917, E. J. Petry. 



The above are the only collections of this species from North 

 America (Mains, Phytopath. 7:102. 1917). 



^ Contribution from the Botanical Depaitment of the Purdue University Agricul- 

 tural Experiment Station. 



