ENDOTHIA PAKASITICA AND RELATED SPECIES. 



49 



the Gulf of Mexico. There is, however, a very great difference in 

 the abundance of this species at different points. In the southeastern 

 United States that is, the region south of central Indiana and 

 southern Virginia and east of central Arkansas and Louisiana this 

 species occurs in great abundance wherever its hosts are found. 

 Broken branch stubs and exposed roots of Liquidambar, Fagus, 

 and Quercus are covered with fructifications of this fungus. This is 

 especially true of roots exposed by erosion or excavation which have 

 suffered mechanical injury through the tramping of men or cattle. 

 Farther north in Maryland, New Jersey, and Connecticut only an 

 occasional specimen is found. Three days' search in southern Con- 



FIG. 1. Outline map of the United States, showing the distribution of Endothia gyrosa. 



necticut, for example, yielded only two specimens, both on Liquidam- 

 bar, showing pycnidia only. 



Endothia singularis is known at present only on oaks in the dry 

 foothill regions of Colorado and New Mexico. Bethel, in a letter, 

 states that it is very abundant in certain localities in Colorado. 



Endothia fluens has long been known to occur in both Europe and 

 America. Recently, through the kindness of Dr. Y. Kozai, director 

 of the Central Agricultural Experiment Station, Nishigahara, Tokio, 

 Japan, the writers received four specimens of fungi on chestnut. 

 One of these, collected by S. Tsuruta on October 14, 1914, in the 

 Province of Totomi, was the pycnidial stage of an Endothia, which 

 when cultured proved to be E. fluens. Ascospore material of this 

 species has since been collected by Meyer at Nikko, Japan, on the 

 bark of Pasania sp. 



43737 Bull. 38017 4 



