Resupinate polypore mushroom Rigidoporus crocatus on a side of a spruce stump in Tarkhovka Park, west from Saint Petersburg. Russia, May 10, 2021
Unnamed Road, Sankt-Peterburg, Russia, 197701Synonyms: Perenniporia nigrescens, Physisporinus nigrescens, Physisporus microsporus, Podoporia nigrescens, Poria crocata, Poria microspora, Poria nigrescens, Rigidoporus nigrescens.
Russian name: Rigidoporus shafranno-zheltyy.
Rigidoporus crocatus is a species of fungus that causes white rot in trees. In St. Petersburg, Leningrad Oblast, and north-western Russia, it has been found to infect various deciduous tree species, including willow, alder, and birch. The fungus grows on the roots and trunks of trees, causing significant damage and decay. It is relatively common in the region, particularly in areas with high moisture levels and rich soil.
Resupinate polypore mushroom Rigidoporus crocatus on a side of a spruce stump in Tarkhovka Park, west from Saint Petersburg. Russia, May 10, 2021Unnamed Road, Sankt-Peterburg, Russia, 197701
Resupinate polypore mushroom Rigidoporus crocatus with moss on a side of a spruce stump in Tarkhovka Park, west from Saint Petersburg. Russia, May 10, 2021Unnamed Road, Sankt-Peterburg, Russia, 197701
Pore surface of resupinate polypore mushroom Rigidoporus crocatus on a side of a spruce stump in Tarkhovka Park, west from Saint Petersburg. Russia, May 10, 2021Unnamed Road, Sankt-Peterburg, Russia, 197701
Resupinate polypore mushroom Rigidoporus crocatus with moss detached from a side of a spruce stump in Tarkhovka Park, west from Saint Petersburg. Russia, May 10, 2021Unnamed Road, Sankt-Peterburg, Russia, 197701Rigidoporus crocatus was observed growing on the sides of spruce stumps in Tarkhovka Park, Leningrad Oblast, Russia. On May 10, 2021, the fungus was found to be a resupinate polypore mushroom, with its pore surface visible. In some cases, it was covered with moss, while in others, it had become detached from the stump. The observations suggest that Rigidoporus crocatus can thrive on spruce stumps in this region, and its growth can be accompanied by the presence of moss. The fungus's ability to grow on decaying wood is consistent with its role as a decomposer. The specific location and date of the observations provide valuable information about the habitat and seasonal patterns of Rigidoporus crocatus in north-western Russia. The detailed descriptions of the fungus's appearance and growth habits offer insights into its biology and ecology.
Russian web-forums Planeta Gribov, V Kontakte, and Griby Sredney Polosy for learning names of local mushrooms.
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