634 STATE BOARD OF AGRICULTURE. 



ciatiou of the organism with the disease than a conclnsion resulting from 

 exi»ei'imentation. 



The organism was discovered in Argentina by Spegazzini in 188'^. The 

 fungus and its characteristic lesions were tersely described by him in a 

 publication containing descrii)tions of several other organisms. The 

 name given by Spegazzini has been in common use for this disease-pro- 

 ducing organism although the fungus was subsequently found upon the 

 host in countries far from the source of the type material. 



The early accounts of this disease consisted of a few scattered notes 

 recording the finding of the fungus in various localities. For example, as 

 recorded in Briosi and Cavara (1889) : Cuboni (1888) and Passerini 

 (1889) found the fungus in Italy. Passerini's contribution is note- 

 worthy in that this author recognized the pathogenic character of the 

 organism and outlined rather fully the symptoms of the disease. 



B. D. Halsted (189G; 1897) was the first to report the disease for the 

 United States and in one of his annual reports he listed Septoria lyco- 

 persici for New Jersey and mentioned it as causing one of the leading 

 fungous diseases of tomato. A. D. Selby (1897a) discussed a "new 

 arrival" in Ohio, apparentlj^ Heptoria lycopersici, and in a later article, 

 its distribution in Ohio Avas particularly noted (1897b). The same author 

 in 1899 stated — "During the season 1898 conditions of warmth and mois- 

 ture seemed to favor the development of the Septoria fungus." In 1899, 

 Dr. E. A. Bessey observed extensive damage in Maryland near Ann- 

 apolis Junction (verbal communication). F. S. Earle (1900) noted a seri- 

 ous epidemic of this disease in the cold frames at Auburn, Ala. N. A. 

 Cobb (1902), discussing tomato diseases of Australia, stated that this 

 disease, ''has never been mentioned in this journal (Agr. Gaz. N. S. 

 Wales) hitherto." "The leaves are attacked more particularly although 

 there is hardly any part of the plant entirely free from attack." Again 

 recording the fungus for Australia, D. Mc Alpine (1903) gave a descrip- 

 tion of the fungus and the effect produced upon the host. W. A. Keller- 

 man (1903) w^'ote a brief note on Septoria lycopersici. In 1904, W. A. 

 Orton mentioned the disease as serious in the previous year. G. Dela- 

 croix (1905) in recording the history of this fungus in France, wrote a 

 description of the causal organism on the host and in pure culture and 

 noted successful infection experiments. (See page 12). L. Reh (1905) 

 described the disease in Germany. G. Kock (1905) noted the disease in 

 Austria. Later he described Septoria lycopersici, and made a series of 

 observations on its effects on the host, and resistance of varieties. K. 

 Kornauth (1905) gave a further account of the disease in Austria. J. 

 Burtt-Davy (1905) records the disease from Transvaal. J. L. Sheldon, 

 in West Virginia (1905), noted "Leaf-Spot." B. F. Floyd (1905), in 

 Missouri, described the disease as attacking "leaves, stems, and some- 

 times green fruit." L. Hollos (1907) described the disease in Hungary. 

 F. D. Kern noted Septoria lycopersici in 1906 in Indiana. H. T. Giissow 

 (1908) gave a full description of the disease. This article, dealing chiefly 

 with greenhouse conditions, is an extensive discussion of the fungus and 

 the disease which it produces. The symptoms of the disease are dis- 

 cussed in detail, inconclusive inoculation experiments are reported, and 

 various inferences as to the dissemination of the organism are drawn. 

 F. L. Stevens and J. G. Hall (1909) used Septoria lycopersici for experi- 



