288 



Mycologia 



Type locality: T6ky6-fu (prefecture) Nakano-cho, May, 1915, 

 I. Miyake. 



Illustrations : Two black and white lithographic figures showing 

 pycnidia and pycnospores. 



Found nowhere else, parasitic ; mycelium intercellular and with 

 haustoria entering the host cells. 



Dimerosporium mori Y. Endo sp. nov. in Dainippon Sanshi 

 Kwaisho (Journal of the Sericultural Association of Japan), 

 26 303 : 300, fig. B on p. 288, Apr. 1, 1917. (Japanese.) 



Perithecia large, ellipsoid, 110-120^ high, 130-140 /x across, 

 without appendages, dark-brown ; perithecial wall consisting of 

 large cells containing several oil globules in each cell ; asci nu- 

 merous, clavate, thin-walled, 60-70 X 12— 15 /x, 8-spored ; asco- 

 spores almost definitely biseriate, oblong, subacute at both ends, 

 7-8 X 5-7 as yellowish-brown, uniseptate, with 1-2 shining oil 

 globules in each cell. 



Epiphytic on leaves of Morus alba (mostly on variety Nezumi- 

 gaeshi), occurring with a species of Meiiola. Catenulate hyphae, 

 unicellular microconidia, multicellular macroconidia, gemmae, 

 spermogonia, and pycnidia were observed, but it was not deter- 

 mined to which species they belong. 



Locality : Ueda, Chiisagata-gun, Nagano-ken, Japan, nursery 



ground of Ueda Sericultural College, and mulberry fields of To- 



kida section east of the college grounds. 



Bureau of Plant Industry, 

 Washington, D. C. 



