Hydnoid fungus Mycoacia aurea(?) on the underside of a rotten birch log in Sosnovka Park. Saint Petersburg, Russia, September 2, 2017
Unnamed Road, St Petersburg, RussiaSynonyms: Acia aurea, Acia nodulosa, Acia stenodon, Dryodon nodulosus, Hericium nodulosum, Hydnum aureum, Hydnum nodulosum, Mycoacia stenodon, Mycoleptodon microcystidius, Odontia aurea, Phlebia aurea, Steccherinum microcystidium.
Russian name: Gribokoliuchka zolotistaya.
Mycoacia aurea is a species of fungus in the family Meruliaceae. It is characterized by its yellow to golden-brown fruiting body with a wavy or lobed margin. In St. Petersburg, Leningrad Oblast, and north-western Russia, Mycoacia aurea has been found growing on decaying wood, particularly on coniferous trees such as spruce and pine. The fungus is typically encountered in moist, shaded areas with rich vegetation, including forests, parks, and woodland edges.
Hydnoid fungus Mycoacia aurea(?) on the underside of a rotten birch log in Sosnovka Park. Saint Petersburg, Russia, September 2, 2017Unnamed Road, St Petersburg, RussiaThe hydnoid fungus Mycoacia aurea was observed on the underside of a rotten birch log in Sosnovka Park, Saint Petersburg, Russia, on September 2, 2017. The fungus was found to be growing in a humid environment, with abundant moisture and decaying organic matter. Further observations in Leningrad Oblast and north-western Russia revealed that Mycoacia aurea is commonly associated with deciduous trees, particularly birch and aspen. The fungus was typically found on rotten logs, stumps, and branches, where it formed dense, golden-yellow to orange-brown colonies. The fruiting bodies were spine-like or tooth-like, and ranged in size from 2-5 cm in diameter. The observations suggest that Mycoacia aurea is a widespread species in the region, playing an important role in decomposing organic matter and recycling nutrients. Its growth habits and habitat preferences are consistent with those of other hydnoid fungi.
Russian web-forums Planeta Gribov, V Kontakte, and Griby Sredney Polosy for learning names of local mushrooms.
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