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RESUME. 



The following are some of the parasitic fungi found recently in Japan. 



1. Ustilago Sacchari Rabenh. 



On Saccharuiii officiiiarin/i, Prov. Sanuki (S. Kayaba, 1905). Mr. T. Kawa- 

 kami informs me that the fungus is also found in Formosa. 



The spores are formed under the epidermis of young stem, the latter becoming 

 a long Avhip-like body. In its earlier stages the affected stem is sheathed, as in 

 Ustilago Knsanoi Syd., by the silvery-white epidermis which soon ruptures and 

 exposes the black spore masses, as described by Butler in the Memoirs of the 

 Department of Agriculture in India, Vol. I, No. 3, 1906. 



2. Ustilago Sorghi [\2ü.)Yz.'S>'&. 



The fungus appeared very abundantly in Hokkaido in 1905 on SorgJiuin vul- 

 <rarc introduced from Manchuria. It is also known from Honshiu. 



In a Chinese book we find an account of two forms of smut on Sor<rJunn, of 

 which one can be identified with Ustilago Rciliana and the other with U. Sorghi. 

 In China these two are held to be edible when young. 



3. Ustilago Oxalidis Eil. et Trac. 



On Oxalis corniculata, Sapporo, Prov. Ishikari (Y. Takahashi, Sept. 1906;. 



The fungus hitherto reported only from North America, where it is found 

 parasitic on Oxalis stricta, is now known to occur also in Hokkaido. The reddish 

 brown spore masses are formed in seeds, the diseased ovaries being scarcely 

 distinguishable from the healthy ones by their outward appearance. The spores 

 are yellow, spherical or avoid, verrucose, and 13 — 2011 in diameter, 



4. Tilletia ? Comuicliiia Kom. 



On Coi/imeliua cominiinis, Morioka, Prov, Rikuchiu (Ch. Miyake, Oct. 1905). 



This smut fungus found on Coimncliiia covnnuiiis by Komarov in 1897 in a 

 valley near the River Yalu occurs also in Japan on the same host. The chocolate- 

 brown spore masses are formed in ovaries and the spores are light chocolate- 

 coloured, spherical, and 11 — 18/-^ in diameter, epispore being furnished with ridges 

 which form a hexaeonal-meshed netw'ork. 



