Blue tooth mushroom (Hydnellum caeruleum, Bankeraceae) in Zakhodskoe, 50 miles north from Saint Petersburg. Russia, July 10, 2016
Unnamed Road, Leningradskaya oblast', Russia, 188861Synonyms: Calodon caeruleus, Calodon cyaneotinctus, Calodon ferrugipes, Hydnellum alachuanum, Hydnellum cyaneotinctum, Hydnellum ferrugipes, Hydnellum inquinatum, Hydnum alachuanum, Hydnum caeruleum, Hydnum cyaneotinctum, Hydnum inquinatum, Hydnum suaveolens, Sarcodon alachuanus.
Common name: blue tooth.
Russian name: Gidnellum goluboy.
Extract from Wikipedia article: Hydnellum caeruleum is an inedible fungus, also commonly known as the blue-green hydnellum, blue spine, or blue tooth.
Hydnellum caeruleum is a rare, blue-staining tooth fungus that grows on the ground in coniferous forests. In St. Petersburg and Leningrad Oblast, it has been found in sphagnum bogs and pine forests, typically fruiting from July to September. In north-western Russia, it is considered a vulnerable species due to habitat destruction and fragmentation, with records of its occurrence limited to a few locations, including the Karelian Isthmus and the Murmansk Oblast. The fungus is characterized by its blue-green to greyish-blue cap and stipe, and blue-staining flesh.
Blue tooth mushroom (Hydnellum caeruleum, Bankeraceae) in Zakhodskoe, 50 miles north from Saint Petersburg. Russia, July 10, 2016Unnamed Road, Leningradskaya oblast', Russia, 188861
Blue tooth mushroom (Hydnellum caeruleum, Bankeraceae) near Orekhovo, north from Saint Petersburg. Russia, August 13, 2016Unnamed Road, Leningradskaya oblast', Russia
Side view of blue tooth mushroom (Hydnellum caeruleum, Bankeraceae) near Orekhovo, north from Saint Petersburg. Russia, August 13, 2016Unnamed Road, Leningradskaya oblast', Russia
Blue tooth mushroom (Hydnellum caeruleum) in Dibuny, near Saint Petersburg. Russia, August 20, 2017Unnamed Road, Sankt-Peterburg, Russia, 197758
Side view of a blue tooth mushroom (Hydnellum caeruleum) in Dibuny, near Saint Petersburg. Russia, August 20, 2017Unnamed Road, Sankt-Peterburg, Russia, 197758
Blue tooth mushrooms (Hydnellum caeruleum, Bankeraceae) in a pine forest near Razliv Lake on Lenin Trail near Dibuny, north-west from Saint Petersburg, Russia, August 15, 2018Leninskaya Tropa, Pesochny, Sankt-Peterburg, Russia
Dissected blue tooth mushrooms (Hydnellum caeruleum, Bankeraceae) in a pine forest near Razliv Lake on Lenin Trail near Dibuny, north-west from Saint Petersburg, Russia, August 15, 2018Leninskaya Tropa, Pesochny, Sankt-Peterburg, Russia
Underside of blue tooth mushrooms (Hydnellum caeruleum, Bankeraceae) in a pine forest near Razliv Lake on Lenin Trail near Dibuny, north-west from Saint Petersburg, Russia, August 15, 2018Leninskaya Tropa, Pesochny, Sankt-Peterburg, Russia
Pinesap (Monotropa hypopitys) with fruits growing through blue tooth mushroom (Hydnellum caeruleum, Bankeraceae) near Dibuny, north-west from Saint Petersburg. Russia, August 28, 2018Leninskaya Tropa, Pesochny, Sankt-Peterburg, Russia
Underside of blue tooth mushroom (Hydnellum caeruleum) near Dibuny, north-west from Saint Petersburg. Russia, August 28, 2018Leninskaya Tropa, Pesochny, Sankt-Peterburg, Russia
Blue tooth mushroom (Hydnellum caeruleum) near Orekhovo, north from Saint Petersburg. Russia, August 1, 2024Пляжная улица, Орехово, Сосновское сельское поселение, Приозерский район, Ленинградская область, Северо-Западный федеральный округ, 188730, Россия
Side view of a blue tooth mushroom (Hydnellum caeruleum) near Orekhovo, north from Saint Petersburg. Russia, August 1, 2024Пляжная улица, Орехово, Сосновское сельское поселение, Приозерский район, Ленинградская область, Северо-Западный федеральный округ, 188730, Россия
Blue tooth mushrooms (Hydnellum caeruleum) on an old sand dune overgrown by pine forest in Sestroretskoye Swamp near Saint Petersburg. Russia, August 11, 2024Дюны, Белоостров, Санкт-Петербург, Северо-Западный федеральный округ, 197730, Россия
Caps of blue tooth mushrooms (Hydnellum caeruleum) on an old sand dune overgrown by pine forest in Sestroretskoye Swamp near Saint Petersburg. Russia, August 11, 2024Дюны, Белоостров, Санкт-Петербург, Северо-Западный федеральный округ, 197730, Россия
Cross section of blue tooth mushrooms (Hydnellum caeruleum) on an old sand dune overgrown by pine forest in Sestroretskoye Swamp near Saint Petersburg. Russia, August 11, 2024Дюны, Белоостров, Санкт-Петербург, Северо-Западный федеральный округ, 197730, РоссияObservations of Hydnellum caeruleum in Leningrad Oblast and north-western Russia reveal the fungus grows in various locations, including Zakhodskoe, Orekhovo, Dibuny, and Sestroretskoye Swamp. The mushroom is found in pine forests, often near Razliv Lake and Lenin Trail. It fruits in late summer, with observations recorded between July 10 and August 28. The fungus exhibits a blue color and has a distinctive tooth-like shape. In some cases, it is accompanied by pinesap (Monotropa hypopitys) growing through its cap. Dissected specimens show the internal structure of the mushroom, while underside views reveal the spines or teeth that give the species its common name. The fungus grows on old sand dunes overgrown by pine forest, suggesting it can thrive in a variety of habitats. Multiple observations were made over several years, indicating the species is relatively common in the region.
Russian web-forums Planeta Gribov, V Kontakte, and Griby Sredney Polosy for learning names of local mushrooms.
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