M D i ■; vs i }i' i ) \l '. l.i ; J it! >t 1 Ji Pi.w I" 



;vajKO u/ Ccratophoruni setosiim K.IKCHNER 117 



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

 some cross inoculations with expected success. 



2. Historical Review 



In i8y2, Kircitxer(2) reportetl the f.ict that the seedlings of Cytisus capitatiis 

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

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

 the name of Ccratophorutn setosiun, to be the cause of this disease. The descrip- 

 tion of the fungus appeared in 1895 in S.vccakdo's Sylloge Fungoruni, Vol. XI. 

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

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

 fection-experiments. In 1908, M.VLKoi'F (5^ reported this fungus to be parasitic 

 also on Cytisus Labiirinim in Bulgaria. 



In 1910, Lindau gave the description of this fungus in Rai;eniiokst'.s Krypto- 

 gamen Flora, AuH. IF, Abt. IX and stated it to be parasitic on the le.uvs ai'd 

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

 and Cytisus Laburnum. 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 Rostkup and others. In 

 1913, Lind(4) revisetl the Danish fungi as represented in the Herbarium of E. 

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

 Cytisus Laburnum, giving the Rosruup'.s figures of the hyphae and chlamydospores 

 as well as the conidiospores. Hut up to the present time, no one has reported on 

 the identity o{ Pcsialozzia Lupini Sorauer to Ceratoplioruvi selosum Kirchner. It 

 was in 1898, that W.vgxer and Sokauicr (iJ) described Pestalozzia Lupini as the 

 cause of a disease o{ Lupinus Cruikshanksii, L. inutabilis and others. Subsequent- 

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

 gamen Flora, Aufi. II, Abt. VII (1933), the description of the fungus was repro- 

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

 in 1913, both names were recorded separately in different families. 



3. Symptoms of the Disease 



KlRCHNKR i5i described tlie symptom.-, uf the 0110 year sccdliiiys of Cytiuis cajn'taliis. 'Ihe important 

 part of liis descripiion is as follows: "Die Kraiiklieit äussert sicli glciclifalls iin Ersclieiiieii brauner Flecke 



