Coral spot fungus (Nectria cinnabarina mushroom) on a twig in Sosnovka Park. Saint Petersburg, Russia, August 28, 2016Synonyms: Cucurbitaria cinnabarina, Cucurbitaria ochracea, Cucurbitaria purpurea, Ephedrosphaera decolorans, Helvella purpurea, Knyaria purpurea, Knyaria vulgaris, Nectria amygdalina, Nectria fuscopurpurea, Nectria ochracea, Nectria purpurea, Nectria ribis, Sphaeria cinnabarina, Sphaeria decolorans, Sphaeria fragiformis, Sphaeria ochracea, Tremella purpurea, Tubercularia betulae, Tubercularia confluens, Tubercularia georginae, Tubercularia purpurata, Tubercularia vulgaris.
Common name: coral spot.
Russian name: Nektriya kinovarno-krasnaya.
Extract from Wikipedia article: Nectria cinnabarina, also known as coral spot, is a plant pathogen that causes cankers on broadleaf trees. This disease is polycyclic and infects trees in the cool temperate regions of the Northern Hemisphere. N. cinnabarina is typically saprophytic, but will act as a weak parasite if presented with an opportunity via wounds in the tree or other stressors that weaken the tree’s defense to the disease. A study published in 2011 showed that this complex consists of at least 4 distinct species. There are only a few ways to manage this disease with techniques such as sanitation and pruning away branches that have the cankers. N. cinnabarina is not as significant a problem as other Nectria spp., some of which are the most important pathogens to infect hardwood trees.
Nectria cinnabarina is a species of fungus that belongs to the family Nectriaceae. It is characterized by its bright red to orange-red perithecia and white to yellowish mycelium. In St. Petersburg, Leningrad Oblast, and north-western Russia, Nectria cinnabarina has been found on various substrates, including decaying wood, tree bark, and other plant material. It is typically associated with deciduous trees, particularly birch and alder, and can be found in forests, parks, and urban areas. The fungus is relatively common in the region, with fruiting bodies often appearing in late summer to early fall.
Coral spot fungus (Nectria cinnabarina mushroom) on a twig in Sosnovka Park. Saint Petersburg, Russia, August 28, 2016
Coral spot fungus (Nectria cinnabarina mushrooms) on a twig taken from Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
Coral spot fungus (Nectria cinnabarina mushrooms) on a twig taken from Sosnovka Park. Saint Petersburg, Russia, December 31, 2016
Coral spot fungus (Nectria cinnabarina) taken from bushes in Toksovo, north from Saint Petersburg. Russia, March 14, 2017
Coral spot fungus (Nectria cinnabarina) on a twig taken from bushes in Toksovo, north from Saint Petersburg. Russia, March 14, 2017
Coral spot fungus (Nectria cinnabarina) on a fallen twig west from Kuzmolovo, near Saint Petersburg. Russia, May 7, 2021
Unnamed Road, Leningradskaya oblast', Russia, 188663Observations of Nectria cinnabarina in Leningrad Oblast and north-western Russia show the fungus is present throughout the year. In Sosnovka Park, Saint Petersburg, it was found on twigs in August, October, and December 2016, indicating its persistence during different seasons. The fungus was also observed on bushes in Toksovo, north of Saint Petersburg, in March 2017, and on a fallen twig west of Kuzmolovo, near Saint Petersburg, in May 2021. These findings suggest that Nectria cinnabarina is widely distributed in the region and can be found on various substrates, including twigs and bushes, at different times of the year. The fungus's vibrant orange-red color was consistently observed, making it a distinctive feature of infected plant material. Its presence was recorded in both urban and natural environments.
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