Synonyms: Bjerkandera fragilis, Bjerkandera weinmannii, Daedalea sistotremoides, Leptoporus fragilis, Leptoporus trabeus, Oligoporus fragilis, Polyporus cavinae, Polyporus fragilis, Polyporus kavinae, Polyporus keithii, Polyporus orbicularis, Polyporus sensibilis, Polyporus vermiculus, Polyporus weinmannii, Polystictus fragilis, Postia weinmannii, Spongipellis fragilis, Spongipellis sensibilis, Spongipellis weinmannii, Spongiporus fragilis, Tyromyces fragilis.
Postia fragilis is a species of fungus in the family Fomitopsidaceae. In St. Petersburg, Leningrad Oblast, and north-western Russia, it has been found to grow on dead wood, particularly on coniferous trees such as spruce and pine. It is a relatively rare species in the region, typically fruiting in summer and autumn. The fungus has a fragile, crust-like appearance with a white to cream-colored pore surface and a thin, papery texture.
Brown-staining cheese polypore mushrooms (Fuscopostia fragilis, Postia fragilis)(?) on a tree in Tarkhovka Park, west from Saint Petersburg. Russia, August 2, 2024
Приморское шоссе, Тарховка, Сестрорецк, Санкт-Петербург, Северо-Западный федеральный округ, 197706, Россия
Pores of brown-staining cheese polypore mushrooms (Fuscopostia fragilis, Postia fragilis)(?) in Tarkhovka Park, west from Saint Petersburg. Russia, August 2, 2024Приморское шоссе, Тарховка, Сестрорецк, Санкт-Петербург, Северо-Западный федеральный округ, 197706, РоссияObservations of the fungus Postia fragilis in Leningrad Oblast and north-western Russia revealed its presence on trees in the region. Specifically, brown-staining cheese polypore mushrooms, identified as Fuscopostia fragilis or Postia fragilis, were found growing on a tree in Tarkhovka Park, west of Saint Petersburg. The mushrooms were observed to have distinctive pores, which were documented for further study. The sighting was recorded on August 2, 2024, suggesting that the fungus is active during the summer months in this region. The observation provides insight into the habitat and growth patterns of Postia fragilis in north-western Russia, highlighting its association with trees in urban parks. Further research could investigate the distribution and ecology of this species in the region. The documentation of the pores and overall morphology of the mushrooms contributes to a better understanding of the species.
Russian web-forums Planeta Gribov, V Kontakte, and Griby Sredney Polosy for learning names of local mushrooms.
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