368 



Mycologia 



Phyllosticta citric ola Hori ex K. Hara in Nippon Engei Zasshi 

 (Journ. of^Hort. Soc. Japan), 29 s : 11, illus. (p. 9, figs. 7-9). 

 T. 6, iii, Mar. 191 7. (Japanese.) First published by Hori as 

 Phyllosticta citricola Hori sp. nov. in Engei no Tome (Friend 

 of Horticulture), 0/ : 627, T. 2, vii, July, 1913, but with no 

 description of the fungus, symptoms alone being given. 



Pycnidia punctiform, black, first immersed then slightly raised 

 and disclosing the upper end, gregarious or scattered, globose 

 or depressed-globose, 100-130 in diam. ; perithecial walls mem- 

 branaceous, cells about 4-7 fi, dark-brown, carbonaceous ; ostiola 

 terminal, papillate or even; openings round, about 10-12 /x across; 

 pycnospores globose, ovoid, or short-ellipsoid, 1 -nucleate at the 

 middle and very much granulated all over, colorless and hyaline. 

 6-1 1 X 6-9 fx ; the spore mass does not seem to form the thread- 

 like protrusion covered with mucilaginous matter. 



On leaves of Citrus. 



Type locality : Toyoda-mura, Abe-gun, Shidzuoka-ken, coll. by 

 Okada, July 6, 191 4. 



Japanese name of disease : Kasshoku O-maruboshibyo (large, 

 brown, round-spot disease). 



This disease is reported to have caused great injury to Natsu- 

 daidai (Japanese summer orange) in the province of Toyoda-gun, 

 Hiroshima-ken, and also in Abe-gun, Shidzuoka-ken. Hori re- 

 ported it as also attacking the Unshu (Satsuma) orange. 



Bureau of Plant Industry, 

 Washington, D. C. 



