Septoria cirsii. [Descriptions of Fungi and Bacteria].
Abstract A description is provided for Septoria cirsii. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. DISEASE: Leaf spot, leaf blight (VURRO et al., 1993), drying of leaves, perforation of leaf tissues, sometimes causing defoliation. HOSTS: Cirsium altissimum, C. appendiculatum, C. arvense, C. discolor, C. erisithales, C. heterophyllum, C. hillii, C. incanum, C. iowense, C. lanceolatum, C. laniflorum, C. leo, C. oleraceum, C. rivulare, C. segetum, C. setosum, C. vulgare, Saussurea sp., Serratula coronata, S. quinquefolia, S. radiata (Asteraceae). GEOGRAPHICAL DISTRIBUTION: NORTH AMERICA: Canada, USA. ASIA: Armenia, Azerbaijan, China, Republic of Georgia [www.cybertruffle.org.uk/gruzmaps/index.htm], Iran, Kazakhstan, Kirgizstan, Russia (West Siberia, Far East), Turkmenistan, Uzbekistan. EUROPE: Austria, Bulgaria, Czech Republic, Denmark, Estonia, France, Germany, Hungary, Italy, Latvia, Lithuania, Netherlands, Poland, Romania, Russia, Ukraine [www. cybertruffle. org. uk/ukramaps/index. htm]. TRANSMISSION: By airborne or splash-dispersed conidia from infected plant debris. Spores in droplets in suspension have been used in inoculation experiments.