Ring-like growth of thin white arachnoid corticioid fungus (mushroom) Athelia arachnoidea(?) killing lichens on a trunk of a maple in Sosnovka Park. Saint Petersburg, Russia, February 3, 2017
White arachnoid corticioid fungus (mushroom) Athelia arachnoidea parasitizing on lichens on a maple tree in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, April 2, 2017
White corticioid fungus (mushroom) Athelia arachnoidea on a maple tree in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, April 2, 2017