46 



Mycologia 



side. The paper was well illustrated by lantern slides showing 

 the microscopic details. 



Owing to the lateness of the hour, the writer failed to hear the 

 reading of the last two or three papers. The meeting was well 

 attended and considerable interest was manifested in the subjects 

 under discussion. 



At the Saturday morning session of the Phytopathologists, in 

 addition to the strictly pathological papers, several papers were 

 offered which were of interest mycologically. 



One paper which deserves special mention was that by L. H. 

 Pennington on Boleti and mycorrhiza upon forest trees with 

 special reference to those of white oak. It was suggested that 

 some of the mycorrhiza might be strictly parasites rather than 

 mutualistically associated with the host. Attention was also 

 called to the observation of certain sclerotia which appeared to 

 belong to the Boleti and it was thought that possibly the Boleti 

 wintered over in this form. In the discussion that followed, Pro- 

 fessor R. A. Harper mentioned the finding of numerous sclerotia 

 in Wisconsin in oak clearings. 



F. D. Fromme called attention to root rot of apples caused by 

 species of Xylaria. While this fact has been frequently observed, 

 it is almost new to literature. The symptoms and amount of 

 loss were considered and illustrated by a number of lantern slides. 



Dr. Arthur read parts of a paper on a key to the aecia of the 

 Carex rusts prepared by F. D. Kern which would enable the 

 botanist to identify these rusts by the aecial stage. It was re- 

 ferred to as a clever scheme and the first key of its kind ever 

 undertaken. 



E. W. Olive called attention to a rare rust from Porto Rico. 

 This has been classed as an insect gall by local botanists and in 

 fact somewhat resembles one. While it shows certain rust char- 

 acters, its position with this group is a little uncertain. In the 

 discussion that followed, Professor R. A. Harper suggested that 

 it might be an intermediate form between the smuts and the rusts. 



Fred J. Seaver. 



