Silver leaf fungus (Chondrostereum purpureum mushrooms) on a bush in Udelny Park. Saint Petersburg, Russia, February 28, 2017
Fermskoye sh., 21, Sankt-Peterburg, Russia, 194017Synonyms: Auricularia persistens, Corticium nyssae, Helvella lilacina, Phylacteria micheneri, Stereum ardoisiacum, Stereum argentinum, Stereum atrozonatum, Stereum intricatissimum, Stereum lilacinum, Stereum micheneri, Stereum nipponicum, Stereum pergameneum, Stereum purpureum, Stereum rugosiusculum, Stereum vorticosum, Terana nyssae, Thelephora lilacina, Thelephora purpurea, Thelephora vorticosa.
Common name: silverleaf fungus.
Russian names: Stereum purpurnyy, Khondorostereum purpurnyy, Stereum purpurno-fioletovyy, Khondrostereum purpurnyy.
Extract from Wikipedia article: Silver leaf is a fungal disease of trees caused by the fungus plant pathogen Chondrostereum purpureum. It attacks most species of the rose family Rosaceae, particularly the genus Prunus. The disease is progressive and often fatal. The common name is taken from the progressive silvering of leaves on affected branches. It is spread by airborne spores landing on freshly exposed sapwood. For this reason cherries and plums are pruned in summer, when spores are least likely to be present and when disease is visible. Silver Leaf can also happen on poming fruits like apples and pears. Plums are especially vulnerable.
Chondrostereum purpureum is a wood-decaying fungus that grows on dead branches and stumps of deciduous trees. In St. Petersburg, Leningrad Oblast, and north-western Russia, it has been found to fruit from July to October, typically on alder, birch, and willow. The fungus produces purple-colored crusts or brackets with white or pale yellow pores underneath, and its spores are white in deposit. It is a common species in the region's forests and parks, often occurring in association with other wood-decaying fungi.
Silver leaf fungus (Chondrostereum purpureum mushrooms) on a bush in Udelny Park. Saint Petersburg, Russia, February 28, 2017Fermskoye sh., 21, Sankt-Peterburg, Russia, 194017
Crust of silver leaf fungus (Chondrostereum purpureum mushrooms) in Udelny Park. Saint Petersburg, Russia, February 28, 2017Fermskoye sh., 21, Sankt-Peterburg, Russia, 194017
Silver leaf fungus (Chondrostereum purpureum mushrooms) in Sosnovka Park. Saint Petersburg, Russia, March 13, 2017Severnyy pr., 26к1, Sankt-Peterburg, Russia, 194295
Silverleaf fungus (Chondrostereum purpureum) near Lembolovo, 40 miles north from Saint Petersburg. Russia, September 9, 2017Unnamed Road, Leningradskaya oblast', Russia, 188695
Silverleaf fungus (Chondrostereum purpureum)(?) on a tree base in Krestovsky Island. Saint Petersburg, Russia, October 7, 2017
Silverleaf fungus (Chondrostereum purpureum)(?) in Krestovsky Island. Saint Petersburg, Russia, October 7, 2017
Silver leaf fungus (Chondrostereum purpureum mushrooms) near Kuzmolovo, north from Saint Petersburg. Russia, May 8, 2019Unnamed Road, Leningradskaya oblast', Russia, 188663Observations of Chondrostereum purpureum in Leningrad Oblast and north-western Russia revealed its presence in various locations. The fungus was found on a bush in Udelny Park, Saint Petersburg, on February 28, 2017, forming a crust. It was also observed in Sosnovka Park on March 13, 2017. Near Lembolovo, 40 miles north of Saint Petersburg, the fungus was spotted on September 9, 2017. In Krestovsky Island, it was found on a tree base and elsewhere on October 7, 2017, although these identifications were uncertain. Another sighting occurred near Kuzmolovo, north of Saint Petersburg, on May 8, 2019. These observations suggest that Chondrostereum purpureum is widespread in the region, growing on various hosts including bushes and trees. The fungus was observed during different times of the year, from February to October.
Russian web-forums Planeta Gribov, V Kontakte, and Griby Sredney Polosy for learning names of local mushrooms.
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