141 

 Revised List of Indiana Plant Kusts. 



By J. C. Arthur. 



Five years ago a list of tlie plant rusts of Indiana was prepared, 

 and printed in the Proceedings for 1S9S, to show not only how many 

 and what species occur within the State, but the application of the 

 revised nomenclature, to Avhich great attention has been directed within 

 the last decade. At that time the writer had made little study of the 

 basis for the generic names, but accepted largely the conclusions an- 

 nounced by Kuntze in his Revisio genertDii pUintariiiu. Since the presen- 

 tation of the list, two other papers have been brought before the Acad- 

 emy by the writer, discussing the status of the genu& names Piiccinia 

 and Ginnnosporavgiuin, the onlj^ considerable points in controversy 

 touched by the Indiana list. 



In order to embody the latest conclusions and reaffirm those remain- 

 ing unchanged, as well as to correct a few errors and add the species 

 brought to light since that list was issued, the writer presents herewith 

 a revised list of the Indiana plant rusts. It is given in the latest 

 nomenclatiu'e to familiarize the members of the Academy with this 

 phase of scientific movement. It is not a nomenclature that can be 

 generally used at present, for the reason that no standard works of 

 reference are yet available employing the accepted names. But it does 

 not materially detract from the usefulness of a local list, like the 

 present one, and yet gives the reader a chance to see the direction 

 in which the new movement is leading. 



The present list, like the preceding one, does not include the unat- 

 tached aecidia and uredo. Some thirteen of these that have been men- 

 tioned from time to time in the Proceedings of the Academy have been 

 traced to their teleiitosporic connections since the last revised list was 

 published, and are here included as autonomous species. Besides these, 

 eleven species of rusts have been added to the State flora, having never 

 been reported in any form before. The hosts reported in this list for 

 the first time are recorded by month, county and collector. The speci- 

 mens, on which these data are based, are in the herbarium at Purdue 

 University. The references after the other hosts are to the page and 



