Abstract
Abstract A description is provided for Septoria cornicola . Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. DISEASE: Leaf spot. Development of the disease leads to severe blight with infected leaves drying. Causing defoliation of some dogwoods (NEELY & NOLTE, 1989). HOSTS: Cornus alba, C. alba var. siberica, C. alternifolia , C. amomum, C. asperifolia, C. baileyi , C. californica, C. canadensis, C. candidissima, C. florida, C. mas, C. nuttallii, C. occidentalis, C. paniculata, C. pubescens, C. racemosa, C . ( Thelycrania ) sanguinea, C. sericea, C. sibirica, C. stolonifera, C. stolonifera var. aurea , C. stolonifera var. flaviramea , C. stolonifera var. lutea , Swida australis ( C. sanguinea subsp. australis ) ( Cornaceae ). GEOGRAPHICAL DISTRIBUTION: NORTH AMERICA: Canada, USA. ASIA: Armenia, China, Republic of Georgia [ www.cybertruffle.org.uk/gruzmaps/index.htm ], Iran, Russia (West Siberia, Far East), Turkey. EUROPE: Albania, Austria, Belarus, Belgium, Bulgaria, Czech Republic, Estonia, France, Germany, Great Britain, Greece, Hungary, Italy, Latvia, Lithuania, Moldova, Netherlands, Norway, Portugal, Romania, Russia, Spain, Sweden, Switzerland, Ukraine [ www.cybertruffle.org.uk/ukramaps/index.htm ], former Yugoslavia. TRANSMISSION: By airborne or splash-dispersed conidia from infected plant debris. For infection, leaves must be wet, but moisture is required for a few hours only (NEELY & NOLTE, 1989).
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