Augnst :9.2.] S.ITO.AND K. SAWADA.-A NEW EXOBASTDIUM-DISEASE 241 



mata on a basidiitm of the blister-blight fungus are generally 

 two in number, those of the present fungus are invariably four. 

 From the foregoing statements made on the distinctness of 

 our fungus from its related species, we considered it as a new 

 species. The diagnosis of this fungus, for which we propose 

 the name Exobasidium reticulatum is as follows :— 



Exobasidium reticulatum S. Ito et Sawada. 



Spots, on leaf, mostly one or two in number, scattered, not 

 limited, 2 or 3 cm. in diam., sometimes covering the entire 

 surface, yellowish then brown to dark brown in color, at last 

 becoming dry and shrink up. Hymenium hypophyllous, 



reticulated, white ; basidia cylindrical clavate, hyaline, 100-135 

 X 3-4/i ; sterigmata on a basidium are 4 in number, 2-3/^ in 

 length. Basidiospores oblong-obovate, straight or slightly 

 curved, hyaline, continuous, granulate, 9-12x3-3.5/^ Two- 

 celled basidiospores oblong-obovate, hyaline, not or slightly 

 constricted at the septum, often with germ-tubes. 



Hab. On leaves of Tbea sinensis L. 

 Honshu :- Prov. Suruga. May 1911. T. Hanzawa. 

 Formosa :- Taihoku. Nov. 16, 1908 ; Jan. 27, 1910; April 18, 



1911. K. Sawada. 



In conclusion, we wish to express here our heartiest thanks 

 to Prof. Dr. K. Miyabe to whom we are indebted for his many 

 valuable suggestions. 



June 1912. In the Phytopathological Laboratry, 



College of Agriculture, 

 Tohoku Imperial University, 

 Sapporo, Japan. 



