A PRELIMINARY LIST OF MINNESOTA 

 ERYSIPHE^E. 



E. M. FREEMAN. 



The collection of fungi in Minnesota has been carried on by 

 the Geological and Natural History Survey of the state at various 

 times for the past fourteen years.* In 1 886 Prof essorj. C. Arthur 

 assisted by Prof. L. H. Bailey and E. W. D. Holway, Esq., made 

 a collection of fungi in St. Louis county especially in the region 

 about Vermillion lake. A list of the plants collected was pub- 

 lished in Bulletin No. 3 of the Geological and Natural History 

 Survey of Minnesota. Since that time numerous collections 

 have been made by Dr. A. P. Anderson, Messrs. E. P. Shel- 

 don, C. A. Ballard and others, but lists of the collected plants 

 have not yet been published. The list given below comprises 

 records of all the Erysiphese which have been collected in Min- 

 nesota up to the present time and deposited at the herbarium of 

 the University of Minnesota. 



A number of specimens had been identified by Mr. Sheldon 

 and these together with the above mentioned collection of Profes- 

 sor Arthur and his party have in every case been reexamined so 

 that the writer assumes the sole responsibility of the determina- 

 tions. The specimens have been compared with such well 

 known exsiccati as Ellis' North American Fungi, de Thiimen's 

 Mycotheca Universalis and others. For the sake of complete- 

 ness the collection made by Professor Arthur and party is incor- 

 porated in this list and where the nomenclature has been changed 

 the name published by Professor Arthur is placed in parenthe- 

 ses after the collection citation. In 18844 A. B. Seymour made 

 a few collections along the Northern Pacific Railroad. Speci- 



* A list of Minnesota fungi published by Dr. A. E. Johnson in the Bulletins of 

 the Minnesota Academy of Natural Sciences during the years 1876-1879 cannot be 

 considered authentic, since no collection is available for comparison. 



f Seymour, A. B. List of Fungi, collected in 1884 along the Northern Pa- 

 cific Railroad. Proc. Bost. Soc. Nat. Hist. 24 : 182-191. 1889. 



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