82 



Mycologia 



Note : Salmon states that the occurrence of this fungus on 

 Actinidia in Japan suggests that native locahty of grape mildew 

 disease in the Orient (Monogr. Erisiph. 1900, p. loi), but Hara 

 considers there is evidently a considerable morphological differ- 

 ence between this and the typical U. necator, the former being 

 characterized by short, stout, subrigid appendages, with distinct 

 swollen bases, and by typically beakless asci. 



MiCROSPHAERA ALNi (Wallr.) Salm. forma Quercus-glanduli- 



ferae K. Hara forma nov. in Dainippon Sanrin Kwaiho ( Journ. 



Forestry Assoc. Japan) Tokyo, 392 : 64 Jul. 1015. (Japaneses.) 



Appendages once branch dichotomously about the middle. 

 Other characters same as type. 



On Querciis glandidifera. 



Locality and distribution not given. 

 Macrophoma Corchori Sawada sp. nov. in Taiwan Nojiho 



(Formosan Agric. Review) Taihoku, 120: 868-871. T. 5, xi, 



Nov. 1916. (Japanese.) 



Spots indefinite ; mycelia corticolous or lignicolous, occasionally 

 formed in medulla, colorless ; hyphae aseptate, branching, 3-8 ju 

 across, freely passing through the host cells; pycnidia sub- 

 epidermal, punctiform, black, with ostiola erumpent, spheroid, 

 depressed-spheroid or ovoid, often sub-confluent, 98-225 X 89- 

 275 jx ; cells forming perithecial wall multiserial, black ; ostiola 

 with round openings 15/x in diam. ; conidiophores numerous, 

 densely coarctate, cylindric, somewhat tapering toward the apex, 

 simple, straight or slightly curved, continuous, hyaline, 10-14 X 

 2.5-3.5 terminated by a single pycnospore ; pycnospores ovoid- 

 oblong, oblong-ellipsoid or short-clavate, rounded at the apex, ob- 

 suse at the base, straight or sHghtly curved, smooth, unicellular, 

 finely guttulate, hyaline, 16-32 X 7-10 /x. 



On Corchorus capsidaris (jute). 



Locality: Formosa (widely distributed). 



Notes: The diseases of jute have not yet been well studied by 

 pathologists even though the plant is so important as a source 

 of textile fiber. Sawada states that this dieback disease is one 

 of the most devastating jute diseases in Formosa and the annual 

 loss is sometimes recorded as 30-40 % of the total crop. The 

 only remedy for this is said to be to avoid an ins^ufficient suppty 

 of potash in the soil, and Bordeaux mixture was shown to be no 

 protection against the disease. 



