TWO BASIDIOMYCETES NEW TO MINNESOTA: EXO- 

 BASIDIUM MYCETOPHILUM AND CAN- 

 THARELLUS RETIRUGUS. 



Daisy S. Hone. 



The above species appear rarely, not only in Minnesota but in 

 the other parts of the United States. They both exhibit interesting 

 and somewhat uncommon features in their habits. Exobasidium 

 mycetophihim (Peck) Burt has been collected in several localities 

 in the United States but this is the first collection from Minnesota. 

 As far as the writer has been able to determine, this is the first 

 collection of Cantharellus retirugus (Bull.) Fries in the United 

 States. 



Specimens of both species are in the collections of the Museum 

 of the University of Minnesota. The drawings were made with 

 the aid of an Abbe camera lucida from material preserved in for- 

 malin. Photographs of Plate XI. and XII. Fig. i, were taken by Mr. 

 C. J. Hibbard, formerly on the staff of the Minnesota Geological and 

 Natural History Survey. Photographs of Plate XII. Fig. 2, 3, were 

 taken by Mr. J. A. Gleen of Albany, New York. 



I wish to thank Dr. E. M. Freeman for his suggestions and ad- 

 vice in preparing this paper. 



Exobasidium mycetophilum (Peck) Burt. 



While collecting in Crow Wing County, Minnesota, during July 

 1904, the writer discovered a large patch of Exobasidium mycetophi- 

 lum (Peck) Burt. The collection was made on an island in "White 

 Fish Lake" in Crow Wing County in the central, northern part of 

 Minnesota. The island was covered with a heavy hardwood for- 

 est. 



The large masses, consisting of convoluted, gelatinous to fleshy 

 substance, white to yellowish in color, covered with a fine white 

 powder, were found growing upon the cap and stipe of Collybia 

 dryophila Bull. The fungus masses have very much the appearance 



[61] 



