165 



THE UKEDINALES OK IMHANA III.' 



II. y. .T.\CKS().\, Purdue Univcrsily. 



The following report on the rusts of Indiana is suplcnientary to lists 

 l)ul)lished in the Proceedings of the Indiana Academy of Science for 1915 

 and for 1917.= 



The present paper is divided into two parts. In the first part an attempt 

 has hoon made to list all the unrecorded hosts for si">ecies included in the 

 101.") and 1D17 lists. Most of these host records represent new collections. 

 Some of them, however, are corrections to previous determinations, while 

 others represent collections which were overlooked. In a few cases the 

 (Ictormination of the rust has heen found to he incorrect and corrections 

 (pf sucli have also heen made. No attempt has heen made to list the large 

 inuubcr of collections which have been made on hosts already recorded. 

 The number preceding the species name in this paper is the same used 

 lor that species in previous lists. The nomenclature, however, is not the 

 same. In the 19in list the nomenclature used was that proposed by Dr. J. 

 ('. Arthur and based largely on life histories. In the present list the more 

 familiar generic names Pucclnia and Uromyces are retained. In each 

 case, however, the name used in the 191") list is given as a synonym. 



In the second part, twelve rust species which are new to the flora of 

 Indiana are recorded. These are numbered consecutively with the two 

 previous lists and bring the total number of species for the state to 167 

 (Xos. :Ui and 70 are to be dropped so that the real total Is 1G.5). 



In order that the series may be more useful to collectors a complete host 

 index has been prepared by Miss Evelyn Allison and is appended. 



Acknowledgment is gratefully made to all those who have contributed 

 siH'cimens. The name of the collector is given for each collection except 

 where made by the writer. Special acknowledgment is due Mr. C. C. Deam 

 wild through his keen observations and knowledge of the state flora has 

 made many notable additions. Mrs. Agnes Chase. Mr. K. K. Mackenzie 

 .ind ;\Ir. Paul ('. Standley have determined many of the hosts. 



All of the collections recorded are represented in the Arthur lierbarium 

 at the Pui'due University Agricultural Experiment Station. 



ADDITIONS AND rOKRErTIONS TO PREVIOT'S LISTS, 

 (i. ("oi.Kosi'OKiu.M Soi.TUAOiMs (Sfliw.) Thiirii. 



On Soi.IUAfiO BICOLOR L. 

 Two miles east of C<)ry<loii. Harrison Co.. Oct. G. lOl'd. C. C. Do; 



:;:;4."m. 



o.v somdago erecta pursif. 

 North of St. Joe, Clarke Co., Oct. 2."), 1910, C. C. Deam, 22408. 



On Solidago juncea Ait. 

 One-half mile south of West Lafayette, Tippecanoe Co.. Oct. .''.0. 1920. 



^Contribution from tbe Department of Botanv. Purdue University Agricultural 

 Experiment Station. 



-.Ia<:lJson, II. S. The Uredinales of Indiana. Ind. Acad. Sci. I'n.c I'.if: 



4L".t 47.">. lltlG. The Uredinales of Indiana II. Ind. Acad. .Sci. I'roe. i:!:!l.!7 



