Tanaka: Xkw Japanese Fungi 31 



base of conicHa, (2) nuich larger chlaniyclo?pores, (3) less richly 

 formed aerial hyphae in culture, and (4) when observed in cul- 

 ture distinctly more slender conidia with narrow basal cells, 

 llxphac of this species do not develop on bouillon-agar prepared 

 with the extract of Panicum paliidosinn, while the rice blast fun- 

 gus docs very well on that medium. Inoculation failed on rice 

 plant, just as the rice blast fungus has not been successfully trans- 

 ferred to Lccrsia hcxandra. 



Redcscribing this species in Noji Shikenjo Tokubctsu Hokoku 

 (Spec. Bull., Agr. Exp. Stat.), Taiwan, no. 16: 65 (June T917), 

 Sawada states that the spots are at first orbicular, 1-3 mm. in 

 diam., then becoming angular, finally resuming fusiform shape. 

 Illustration in black and white lithograph shows conidiophores, 

 conidia, and germination of conidia in detail. Leaf spots are 

 also shown in a text figure appearing on p. 21. 

 Dactvlaria Costi Sawada sp. nov. in Noji Shikenjo Tokubetsu 



Hokoku (Special Bull., Agr. Exp. Stat.), Taiwan, no. 16: 24- 



25, 66-67. T. 6, vi. June 1917. (Japanese.) 



Spots usually occurring on leaves; small, orbicular, never be- 

 coming fusiform, 1-1.5 mm. in dam.; conidiophores fasciculate 

 or solitary, simple, generally 2-3-septate, slightly swollen near 

 the base, brownish-gray, becoming lighter toward the apex; 

 conidia elongate-pyriform to clavate-fusoid, 2-septate, not con- 

 stricted, both ends obtuse, often rounded at the base, with small 

 collar cell of 1.5-1.7/x in d'am.. hyaline, 20-30 X 7.5-iOju, average 

 24X8.6//, apical cell 8.5-12/1, average io.6/t, other cells prac- 

 tically in equal length, basal cell not attenuated toward the papilla. 



On living leaves of Costiis sf^cciosus. 



Type locality: Chuho, Kagi-cho, Taiwan, Oct. 15, 1913, T. 

 Kawakami. 



Illustrations: One text figm-e (on p. 24) showing leaf spots, 

 and one black and white lithographic plate giving detailed figures 

 of conidia. 



Note: In an elaborate article of Y. Nishikado in Ohara Nogvo 

 Kenkyusho Hokoku (Report of the Ohara Agricultural Insti- 

 tute) I-: 171-218, Dec. 1917, two more species of blast fungi 

 found on Sctaria spp. and on Zingiber spp. are described which 

 are determined as spp. nov., Piricularia Sctariae and P. Zingi- 



