83 



Melampsorw ; the whole spores are united together into one body of lenti- 

 cular shape from which the generic name was derived. 



In Japan, notwithstanding of the common occurrence of Galium 

 Aparine L., this parasite lias not yet been observed. 



In 1895, Mr. K. Sengoku collected a rust fungus on Farthenneissu* 

 trkuspidata PI. at Komaba, Tokyo., and sent it to Prof. Miyabe of Sap- 

 poro ; just then as I was studying on the Melampsor<v of Japan under 

 his direction, I had a good opportunity to examine tl t \ec 1 1 



It had besides uredospores, unicellular tek-utospores arranged in 3-4 

 layers, united tagether into one compact mass of somewhat lenticular shape. 



This peculiarity, I thought, is quite sufficient to distinguish it from 

 other known genera of Melampsonv; but on account of the deficiency of 

 the material, I was obliged to p.,stp<.n<' my study on the subject for some 

 other occasion. 



During my stay at Hirosnki, Prov. Mutsu, in 1891), I was struck with 

 a fungs attacking the leaves of Ampelopsis heteropkyila Sieb. et Zucc. 

 which was proved to be an allied form to one on Parthenpcisms. 



Further in 1897, I collected a similar parasite on Vitis Coignetur Pull, 

 and Vitis vinifcra L. at Ilirosaki and its vicinity, and at about the same 

 time Mr. Takahashi at Moiioka, Prov. llikuehu on Parthenon sms triem- 

 pidaia PI., Ampelrqjsis heterophylht Sieb. et Zucc, Vitis Coignetice Pull, 

 and Vith viuifera L.; thus enriched us with the materials for the study 



In 1898, Dieted published the results of his study on the Japanese 

 Uredineat, among which he described a new species of Phaeopsora as 

 Phacopsora AmpeJopsidis Diet, et Syd. parasitic on AmpeJopsis ieeoides 

 PI. collected by Prof. Shirai, at Komaba, Tokyo. 



At my request Prof. Shirai kindly sent me the same specimen which 

 he had formerly sent to Dr. P. Sydow of Berlin, with the remarks that 

 the specimen he had sent him was Ampth.^U 1« tt rophijlla Sieb. et Zucc. 

 and not Ampelopsis leeoides PI., which upon examination I found to be 

 quite identical with the specimens in my possession and agrees exactly with 

 the description made by Dieted. 



Recently, Sydow 2 ' described one on Parthenon ssus tricuspidata PI. 

 (= Vitis inconstans Mi<p\ collected by Mr. Shirai, as a new species under 



