89 Mycologia 



as was discovered by a forest inspector, so immediate treatment 

 is desirable. 



For the purpose of washing off the fungus, concentrated wood- 

 ash solution (30-50 per cent.) is recommended. 



Cercospora pini-densiflorae Hori et Nambu sp. nov. ex Vis- 

 count N. Nambu in Byochu-gai Zasshi (Journ. Plant Protec- 

 tion, Tokyo, 5': 353-354- T. 6, v, May 1917. (Japanese.) 



Acervuli punctiform, minute, black; conidiophores projecting 

 from stromata, grouped, dark-brown, about 44 ix high, 4.4 /x 

 across; conidia filiform or long-obclavate, slightly curved or 

 straight, pale-yellow, 4-5-, sometimes 6-septate, 41.49-50.7 X 



1.23-4.6 IX. 



Hyphae pale-amber, intercellular; spots yellowish-brown, 

 usually occurring on the upper half of the leaf; disease first 

 starts from the- upper part of the plant, gradually coming down, 

 finally causing the death of all that portion of the plant above 

 ground. 



On leaves of young plants of Piiius dcnsiflora. 



Type locality: Nursery of Makago, Kagoshima-ken, Major 

 Forest Office, September 20, 191 5. 



A great many young plants, mostly two years old, were fatally 

 injured in the nursery above mentioned, which is located in the 

 southern part of Kyushu Island. The occurrence of this disease 

 so far as reported seems to be only local but it seems likely to 

 prove dangerous if it is not controlled by treatment of seedlings 

 with Bordeaux mixture, as suggested by the writer. 



Helicobasidium tanakae Miyabe, ex K. SaAvada in Shokubutsu- 

 gaku Zasshi (Bot. Mag.) Tokyo, 26''«*: 102-105, 2 figs., AI. 45- 

 iv, Apr. 1912 (Japanese) ; in J. Matsumura, Index Plantarum 

 Japonicarum (Teikoku Shokubutsu Meikwan) i : 146, Mar. 

 1904. (Nom. nud.). 

 StypincUa Tanakae Miyabe, in K. Saida, Naigwai Futsii Shoku- 



butsushi (Common flora of Japan and Foreign Lands) i: 315. 



Aug. 1910 (Nom. nud.) 



Septohasidium sp. M. Shirai in Saikin Shokubutsu Byorigaku 



(Latest Plant Pathology), 3d ed., p. 356, Aug. 1907. 



