Tanaka: New Japanese Fungi 



29 



poro) io 46 : 239-282. Oct. 1918, while Sawada (in Taiwan Agr. 

 Exp. Stat. Public. No. 100: 4. June 1916) and Hara (Dis- 

 course on fruit diseases p. 284. 1916) maintain their opinion 

 that this is saprophytic. The disease is now widely spread all 

 over Japan and Formosa causing annually somewhat notable 

 damage to various kinds of Citrus, especially to Satsuma orange. 

 Protective measures are also studied by local agricultural experi- 

 ment stations, for instance Wakayama-ken prefectural station 

 (see Progress Report for Fiscal Year Taisho 3, 1914, etc., etc.). 

 Dactylaria Panici-paludosi Sawada sp. nov. in Taiwan Haku- 

 butso Gakkwai Kwaiho (Journ. of Formosan Nat. Hist. Soc), 

 no. 22: 78-80. T. 4, xii, Dec. 191 5. (Japanese). 



Foliicolous ; spots at first orbicular, later forming fusiform 

 areas of 5-23 X 2-4 mm., olivaceous-brown, then producing a 

 gray or dark-colored, dusty substance which covers the lower 

 surface, finally changing from the middle, into straw color; 

 conidiophores fasciculate, simple or occasionally branched ; curved 

 near the apex, 1-3-septate, cinereous, 80-160 X 4-5 bearing a 

 few conidia, not more than 10; conidia oblong-ovoid to obclavate, 

 obtuse at the apex, rounded or rostrate at the base, 2-septate, 

 slightly constructed, hyaline or cinereous, 17-26 X 8.5-12 fx, aver- 

 age 22 X 10.2 fx, germinating in water in two hours, germ tube 

 long, 2 fx, in diam., never producing chlamydospores. 



On living leaves of Panicum paludosum. 



Type localities : Chonaihosho, Taihoku-cho, Taiwan, Apr. 5 & 

 Oct. 25, 1907, Suzuki; Aug. 13 & Nov. 16, 1908, Fujikuro; June 

 19, 1909, Sawada; Oct. 6, 1909, Fujikuro; May 16, 1910, Sawada; 

 Sept. 23, 1910 & July 6, 191 1, Fujikuro; Sept. 4, 191 1, June 20, 

 July 15, Aug. 7, 1914, & Nov. 21, 1915, Sawada: Kyuko, Shin- 

 chiku-cho, Oct. 10, 1915, Sawada: Taichu, Taichu-cho, Oct. 11, 

 1913, Fujikuro; June 1, 1907, Suzuki: Toseikaku, Taihoku-cho, 

 June 3, 1907, Suzuki: Rinkiho, Kagi-cho, May 27, 1907, Suzuki: 

 Koshiken, Tainan-cho, Nov. 8, 1909, Sawada: Bokusekikaku, 

 Kwarenko-cho, May 12, 1909, & May 30, 191 1, Sawada. 



Notes: Differs from rice blast fungus in its short and broad 

 conidia which usually have marked elongation of rostra at the 

 base, and also producing no chlamydospore on germination. This 

 fungus is unable to infect the rice plant by inoculation, just as rice 



