Tanaka : New Japanese Fungi 



83 



Sawada gives (on p. 864) five more species of fungi attacking 

 the jute , plant in Formosa, among w^hich two are new, that is, 

 Phyllosticta Corchori Sawada sp. nov., Hymenula nigra Sawada. 

 sp. nov., Hypochnus centrifiigus (Lev.) Tul., Sphaeroptheca 

 fuliginea (Schlecht) PoUacci, and Rhisoctonia Solani Kuehn. 

 Peronospora CHENOPODii-FiciFOLii Sawada sp. nov. in Taiwan, 

 Sotokufu Noji Shikenjo (Agr. Exp. Sta. Formosa) Circular. 

 Publication No. loi, p. 9-10, 15, figs. 6-10, June, 1916 (Japa- 

 nese) : in Taiwan Nojiho (The Formosan Agr. Review) No. 

 I55> P- 29, 32, figs. 6-10. June 20, 1916. (Japanese.) 

 Hypophyllous, forming a pale-purplish-gray growth on the 

 under surface of leaves, discoloration rather prominent, pale- 

 yellow, round or irregular, about 1-27 mm. in diam., sometimes 

 covering entire under surface ; hyphae intercellular, colorless, 

 aseptate, 7-12 yu, across haustoria simple or branched at the tips, 

 mostly more or less spiral, 10-20X3-4/^; conidiospores caespi- 

 tose from stromata, 240-500 X 8-14 4/i, 3-6-rarely 7-times dicho- 

 tomously branching, all branches extremely curved, average of 

 main stem and branches first to fifth orders measuring respectively 

 310.4 X 10.5, 33-9X6.5, 27.6X5-9, 24.1X4.5. 16.4X3-8, and 

 10.2 X 3.4/x ; conidia oblong or somewhat ellipsoid, papillate at the 

 basal ends, fuliginous or cinereous, 26-36 X 17-25 (average 30.6 

 X 20.9), germinate with germ tubes ; germ tubes not conspicuously 

 swollen at the base, 4-7 ^. 

 Oogonial stage not known. 



On Chenopodium ficifolium, parasitic, Taiwan (Formosa), 

 common. 



Peronospora effusa (Grev.) Ces. var. minor Casp.) on 

 Spinacia oleracea (spinach: Horenso in Japanese) and Perono- 

 spora Chenopodii Casp. (=p. effusa var. major Casp.) on Cheno- 

 podium album are also studied, and inoculation experiments 

 proved the independence of all of these three species. Morpho- 

 logically, this species differs from P. effusa in having (i) spots 

 more intensely colored, (2) hyphae in host tissues thicker with 

 more or less spiral haustoria, (3) curved branches of conidiophore 

 much longer in every respect, (4) papillate conidia more intensely 

 colored, and much longer, (5) germ tubes not conspicuously 

 swollen at the base; from P. chenopodii in having (i) more loose 

 and less branching conidiophores, the main stems of which appear 

 more slender, (2) conidia much longer, mostly oblong. 



