Conifer blueing bracket mushrooms (Postia caesia) in Pavlovsk Park. Pavlovsk, suburb of Saint Petersburg, Russia, September 27, 2017
Alleya Chornoy Shlyapy, Pavlovsk, Sankt-Peterburg, RussiaSynonyms: Bjerkandera caesia, Bjerkandera ciliatula, Boletus caesius, Boletus candidus, Boletus coeruleus, Cyanosporus caesius, Hemidiscia coerulea, Leptoporus caesius, Leptoporus candidus, Leptoporus coeruleus, Leptoporus lacteus, Meripilus candidus, Oligoporus caesius, Polyporus alni, Polyporus caesiocoloratus, Polyporus caesius, Polyporus candidus, Polyporus ciliatulus, Polyporus coeruleus, Polyporus lacteus, Polystictus caesius, Spongiporus caesius, Tyromyces caesius.
Common name: conifer blueing bracket.
Russian names: Postiya sero-golubaya, Postiya sinevato-seraya.
Postia caesia is a species of fungus that belongs to the family Fomitopsidaceae. It is a wood-decaying fungus that grows on coniferous trees, particularly spruce and pine. In St. Petersburg, Leningrad Oblast, and north-western Russia, Postia caesia has been found to be widely distributed, typically growing on stumps, logs, and dead branches of coniferous trees. The fungus produces fruiting bodies that are annual, effused-reflexed, or resupinate, with a smooth to velvety hymenial surface that is pale blue-grey to greyish-brown in color. It is a common species in the region's forests, particularly in areas with high humidity and abundant coniferous tree cover.
Conifer blueing bracket mushrooms (Postia caesia) in Pavlovsk Park. Pavlovsk, suburb of Saint Petersburg, Russia, September 27, 2017Alleya Chornoy Shlyapy, Pavlovsk, Sankt-Peterburg, Russia
Conifer Blueing Bracket fungus (Postia caesia) near Zelenogorsk, 25 miles north-west from Saint Petersburg. Russia, October 1, 2017Первомайское сельское поселение, Выборгский район, Ленинградская область, Северо-Западный федеральный округ, 188855, Россия
Pores of Conifer Blueing Bracket fungus (Postia caesia) near Zelenogorsk, 25 miles north-west from Saint Petersburg. Russia, October 1, 2017Первомайское сельское поселение, Выборгский район, Ленинградская область, Северо-Западный федеральный округ, 188855, РоссияObservations of Postia caesia in Leningrad Oblast and north-western Russia revealed its presence in various locations. In Pavlovsk Park, a suburb of Saint Petersburg, the fungus was found on September 27, 2017, growing as conifer blueing bracket mushrooms. Similar sightings were reported near Zelenogorsk, approximately 25 miles north-west of Saint Petersburg, on October 1, 2017. The fungus was observed to have distinctive pores, which were documented in detail. These findings suggest that Postia caesia is present in the region, particularly in areas with coniferous trees. The observations provide insights into the habitat and growth patterns of this fungus in north-western Russia. The sightings in Pavlovsk Park and near Zelenogorsk indicate a relatively widespread distribution of Postia caesia in the area.
Russian web-forums Planeta Gribov, V Kontakte, and Griby Sredney Polosy for learning names of local mushrooms.
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