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Fungi: Basidiomycota: Agaricomycetes: Polyporales: Polyporaceae: Hapalopilus rutilans (Pers.) Murrill, 1904

Hapalopilus rutilans – Cinnamon bracket

Synonyms: Agaricus nidulans, Boletus nidulans, Boletus resupinatus, Boletus rutilans, Boletus spongiosus, Boletus versicolor, Fomes resupinatus, Fomes spongiosus, Hapalopilus nidulans, Hemidiscia rutilans, Inodermus rutilans, Inonotus nidulans, Inonotus rutilans, Leptoporus rutilans, Phaeolus nidulans, Phaeolus rutilans, Polyporus nidulans, Polyporus rutilans, Polyporus spongiosus, Polystictus nidulans, Polystictus rutilans, Poria resupinata, Poria spongiosa, Scindalma spongiosum.

Common name: cinnamon bracket.

Russian name: Gapalopilus krasnovatyy.

Extract from Wikipedia article: Hapalopilus nidulans (also known as Hapalopilus rutilans) is a species of polypore fungus in the family Polyporaceae. Officially described in 1821, it was transferred to its current genus Hapalopilus six decades later. It is commonly known as the tender nesting polypore, purple dye polypore, or the cinnamon bracket. This widely distributed species is found on five continents. It grows on the fallen or standing dead wood of deciduous trees, in which it fruits singly, in groups, fused, or in overlapping clusters. Fruit bodies are in the form of kidney-shaped to semicircular, cinnamon-orange-brown brackets. The underside of the fruit body features a yellowish to brownish pore surface with tiny angular pores, from which spores are released.

AI-generated description

Hapalopilus rutilans is a rare polypore fungus. In St. Petersburg and Leningrad Oblast, it grows on deciduous trees, particularly willow and alder. In north-western Russia, it has been found in old-growth forests and along rivers, typically fruiting from July to September. The fungus is characterized by its reddish-brown to yellowish-brown cap and white to yellowish pores. It is considered a vulnerable species in the region due to habitat loss and degradation.

Photos of this mushroom from the area of St. Petersburg, Russia

Tender nesting polypore mushroom (<B>Hapalopilus rutilans</B>, Hapalopilus nidulans) near Gulf of Finland between Morskaya and Lisiy Nos, 5 miles west from Saint Petersburg. Russia, <A HREF="../date-en/2016-08-05.htm">August 5, 2016</A>
LinkTender nesting polypore mushroom (Hapalopilus rutilans, Hapalopilus nidulans) near Gulf of Finland between Morskaya and Lisiy Nos, 5 miles west from Saint Petersburg. Russia, August 5, 2016
Location on mapsPrimorskoye sh., g. Sankt-Peterburg, Russia, 197755
Polypore mushroom <B>Hapalopilus rutilans</B> (Hapalopilus nidulans) on a dry birch in northern part of Sosnovka Park. Saint Petersburg, Russia, <A HREF="../date-en/2017-04-26.htm">April 26, 2017</A>
LinkPolypore mushroom Hapalopilus rutilans (Hapalopilus nidulans) on a dry birch in northern part of Sosnovka Park. Saint Petersburg, Russia, April 26, 2017
Polypore mushrooms <B>Hapalopilus rutilans</B> (Hapalopilus nidulans) taken from a dry birch in northern part of Sosnovka Park. Saint Petersburg, Russia, <A HREF="../date-en/2017-04-26.htm">April 26, 2017</A>
LinkPolypore mushrooms Hapalopilus rutilans (Hapalopilus nidulans) taken from a dry birch in northern part of Sosnovka Park. Saint Petersburg, Russia, April 26, 2017
Polypore mushroom <B>Hapalopilus rutilans</B> (Hapalopilus nidulans) taken from Sosnovka Park. Saint Petersburg, Russia, <A HREF="../date-en/2017-04-26.htm">April 26, 2017</A>
LinkPolypore mushroom Hapalopilus rutilans (Hapalopilus nidulans) taken from Sosnovka Park. Saint Petersburg, Russia, April 26, 2017
Pores of mushroom <B>Hapalopilus rutilans</B> (Hapalopilus nidulans) taken from Sosnovka Park. Saint Petersburg, Russia, <A HREF="../date-en/2017-04-26.htm">April 26, 2017</A>
LinkPores of mushroom Hapalopilus rutilans (Hapalopilus nidulans) taken from Sosnovka Park. Saint Petersburg, Russia, April 26, 2017
Cinnamon bracket mushroom (<B>Hapalopilus rutilans</B>, Hapalopilus nidulans) on a birch log in Sosnovka Park. Saint Petersburg, Russia, <A HREF="../date-en/2017-08-14.htm">August 14, 2017</A>
LinkCinnamon bracket mushroom (Hapalopilus rutilans, Hapalopilus nidulans) on a birch log in Sosnovka Park. Saint Petersburg, Russia, August 14, 2017
Location on mapsul. Zhaka Dyuklo, 67, Sankt-Peterburg, Russia, 194214

AI-generated summary of observations

In Leningrad Oblast and north-western Russia, observations of the fungus Hapalopilus rutilans have been recorded in various locations. The mushroom was found near the Gulf of Finland, specifically between Morskaya and Lisiy Nos, and in Sosnovka Park in Saint Petersburg. It was observed growing on dry birch trees and logs in the park, with multiple sightings on April 26, 2017, and again on August 14, 2017. The fungus was identified by its characteristic pores and cinnamon-colored brackets. The observations suggest that Hapalopilus rutilans is present in the region and can be found on birch trees in urban parks and coastal areas. The sightings were recorded during different times of the year, including April and August, indicating that the fungus may be active during various seasons.

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Links

Acknowledgements

Russian web-forums Planeta Gribov, V Kontakte, and Griby Sredney Polosy for learning names of local mushrooms.

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