Hemmi: On a Disease of some Leguminous Plants caused by Ceratophorwn selostim Kirchner i 25 



place when a bit of the mycelium and chlamydospores was used as the inoculum. 

 Unfortunately we have not been able to make infection experiments with the coni- 

 diospores, as they are very rarely produced in the artificial cultures we have used. 



9. Summary 



(i). A serious leaf-spot disease of Liiplnus polyphyllus is prevalent almost 

 every year in the vicinity of Sapporo and probably also in other districts, where 

 this plant is cultivated. 



(2). This disease is caused by Ceratophornni setostim Kirchner, which has 

 been known up to the present time only as the parasite of certain species of Cytisus. 



(3). According to the description and figures, Pestalozzia Lupinl Sorauer 

 described by Wagner and Sorauer as the parasite of Lupinus Cruikshanksiij L. 

 inutabilis and others does not belong to the Melanconiaceae, but is identical to 

 Ceratophonun setosum and should be treated as its synonym. 



(4). By a careful search we lk.\c collected the same fungus severel\' ; ffec<:i!ig 

 the leaves of Cytisus capitatiis and one other species of the same genus in the 

 Botanic Garden of our Uiuversity. The identity of the fungi which attack the 

 two species of Cytisus and Lupiniis polyphylliis was proved by cultural and inocula- 

 tion experiments. 



(5). Pure cultures of the causal fungus were isolated from the diseased areas 

 on the leaves of each of these three host-plants and its parasitism has been de- 

 monstrated by successful cross inoculations on the healthy plants. 



These investigations were carried out in the laboratory of plant pathology of 

 the Hokkaido Imperial University. The writer wishes to express here his hear- 

 tiest thanks to Prof. Dr. Kingo Miyabe for his kind suggestions and criticisms. 

 He wishes also to express his thanks to Mr. T. F"ukushi and other gentlemen who 

 have kindly helped him in various ways. * 



Botanical InstUtUe, College of Agriculture, 



Hokkaido Imperial University, Sapporo, Japan. September 3, igi8. 



