Fleshy galls on cowberry leaves caused by the fungus Exobasidium vaccinii in Posiolok near Vyritsa, south from Saint Petersburg, Russia, July 9, 2017
Unnamed Road, Vyritsa, Leningradskaya oblast', Russia, 188381Synonyms: Cylindrosporium deformans, Fusidium vaccinii.
Common name: cowberry redleaf.
Russian name: Ekzobazidium brusnichnyy.
Extract from Wikipedia article: Exobasidium vaccinii var. japonicum is a plant pathogen.
Exobasidium vaccinii is a parasitic fungus that infects plants in the Ericaceae family, particularly Vaccinium species such as blueberries and cranberries. In St. Petersburg, Leningrad Oblast, and north-western Russia, Exobasidium vaccinii has been found to cause disease in wild and cultivated Vaccinium plants, leading to leaf and flower gall formation, and reduction in fruit production. The fungus is commonly associated with moist, acidic environments and is widespread in the region's bogs, moors, and woodland areas.
Fleshy galls on cowberry leaves caused by the fungus Exobasidium vaccinii in Posiolok near Vyritsa, south from Saint Petersburg, Russia, July 9, 2017Unnamed Road, Vyritsa, Leningradskaya oblast', Russia, 188381
Fleshy gall on a cowberry leaf caused by the fungus Exobasidium vaccinii taken from Posiolok near Vyritsa, south from Saint Petersburg, Russia, July 9, 2017ul. Maksimovskaya, 3, Vyritsa, Leningradskaya oblast', Russia, 188381
Cowberry with fleshy galls caused by the fungus Exobasidium vaccinii taken from Posiolok near Vyritsa, south from Saint Petersburg, Russia, July 9, 2017
Cowberry redleaf fungus (Exobasidium vaccinii) near Dibuny, north-west from Saint Petersburg. Russia, July 15, 2017
Cowberry with fleshy galls caused by the fungus Exobasidium vaccinii near Dibuny, north-west from Saint Petersburg. Russia, July 15, 2017Unnamed Road, Pesochnyy, Sankt-Peterburg, RussiaObservations of the fungus Exobasidium vaccinii in Leningrad Oblast and north-western Russia revealed its presence on cowberry leaves. Fleshy galls were found on cowberry leaves in Posiolok near Vyritsa, south of Saint Petersburg, on July 9, 2017. Similar galls were observed near Dibuny, north-west of Saint Petersburg, on July 15, 2017. The fungus caused redleaf symptoms on infected cowberries. In both locations, the fungus formed noticeable fleshy galls on the leaves of infected plants. The observations suggest that Exobasidium vaccinii is present in the region and can cause significant damage to cowberry plants. The fungus was found to infect cowberry plants in different areas of Leningrad Oblast, indicating its widespread distribution in the region.
Russian web-forums Planeta Gribov, V Kontakte, and Griby Sredney Polosy for learning names of local mushrooms.
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