54 U.S. DEPT. OF AGRICULTURE MISC. PUB. 939 



International spread is possible only through shipment of infected 

 seedlings. Controls by spraying with Bordeaux mixture or other 

 fungicides are successful. 



Distribution : Japan : Kyushu, Shikoku. Formosa : Shizuoka. 



Hosts: Pinaceae. 



Susceptible: Pinus densiflora, P. thunbergii, P. massoniana (Planted 



in Japan), P. luchuensis. 

 Very susceptible: P. radiata, P. strobus, P. pinaster, P. canariensis 



(All planted in Japan) . 



Literature : 



Chupp, C. A monograph of the fungus genus Cercospora. Ithaca, 



New York. 440 pp. 1953. 

 Nukumizu, T. Needle blight of pine (Japanese). Forest Protect. 



News (Tokyo) 5 : 264. 1956. 

 Ito, K. Diseases of Pinus strobus in Japan. (Japanese). Ibid., 



10:43-46. 1961. 

 The following five diseases are listed but not described. Detailed 

 information on them will be supplied upon request to the authors. 



Virus Disease of Chestnut 



Virus (No specific name) 



Distribution: Japan (Ibaragi and Yamagata Prefectures). 



Hosts : Castanea crenata, C. mollissima. 



Gall Rust of Pine 



Cronartium quercuwm Miyabe 



Distribution: Japan, Formosa, Korea. 



Hosts: Pinus densiflora, P. thunbergii, P. sylvestris (Planted in 



Japan). 

 Alternate hosts: Quercus, Castanea, Cyclobalanopsis, Shiia. 



Needle Rust of 5-Needle Pine 



Coleosporium paederiae Diet. 

 Distribution : Japan, Formosa. 

 Hosts : Pinus strobus (Planted in Japan) . 

 Alternate host : Paederia chinensis. 



Brown Spot of Tung 



Cercospora aleuritidis Miyake syn. Mycosphaerella aleuritidis (Mi- 



yake) Ou. 

 Distribution : Japan, China, etc. 

 Host: Aleurites fordii. 



Needle Blight of Redwood 



Cercospora exosporioides Bubak. 



Distribution: Japan (Kyushu and Tokyo), etc. 



Hosts: Sequoia sempervirens (Planted in Japan). Larix leptolepis. 





