M D j'USi )!-- s )>!•: L",;.'j\t:>T )JS Pl vvrs caused 3/ Ceratophorum setosum Kirchner i 17 



of these host-plants, and then made their comparative cultural studies as well as 

 some cross inoculations with expected success. 



2. Historical Review 



In 1892, Kirchner (2) reported the fact that the seedlings of Cytlsus capitatus 

 were attacked by a disease similar to the downy mildew caused by Peronospora 

 Cytisi in its external appearance. He stated the fungus, for which he proposed 

 the name of Ceratophorinn setosiiiu, to be the cause of this disease. The descrip- 

 tion of the fungus appeared in 1895 in Saccardo's Sylloge Fungorum, Vol. XI. 

 In 1905, RosTRUp (8) reported that the same fungus affects the leaves of Cytisus 

 Labnrimm. He made the artificial cultures of the fungus and carried out the in- 

 fection-experiments. In 1908, MalkoffCS) reported this fungus to be parasitic 

 also on Cytisus Labiirnum in Bulgaria. 



In 1910, LiXDAU gave the description of this fungus in Rabenhorst's Krypto- 

 gamen Flora, Aufl. II, Abt. IX and stated it to be parasitic on the leaves and 

 stalks of the seedlings and also on the leaves of grown plants of Cytisus cap.tatas 

 and Cytisus LabiLrmim. Further he remarked on the hyphae and chlamydospores 

 of the fungus in the host-tissue and in the artificial media and also on the setae of 

 the conidia accepting the results of the investigations of Rostrup and others. In 

 1913, Lixd(4^ revised the Danish fungi as represented in the Herbarium of E. 

 Rostrup ; and in his work he mentioned the fungus as parasitic on the leaves of 

 Cytisus Laburuuui, giving the Rostrup's figures of the hyphae and chlamydospores 

 as well as the conidiospores. But up to the present tinij, no one has reported on 

 the identity oi Pestaloz::ia Lupini Sorauer to Ceratophorum setosum Kirchner. It 

 was in 1898, that Wagner and Sorauer ('3) described Pestalozsia Lripini as the 

 cause of a disease oi Lupinus Cruikshauksii, L. viutabilis and others. Subsequent- 

 ly, in Saccardo's Sylloge Fungorum, Vol. XVI (1902) and Rabenhorst's Krypto- 

 gamen Flora, Aufl. II, Abt. VII (1903), the description of the fungus was repro- 

 duced without any comment. In Stevens' "The Fungi" (12)^ which was published 

 in 191 3, both names were recorded separately in different families. 



3. Symptoms of the Disease 



Kirchner '*' described the symptoms of the one year seedlings of Cytisus capitatus. The important 

 part of his description is as follows: "Die Krankheit aussert sicli gleiclifalls im Erscheinen brauner Flecke 



