Young depressed hedgehog mushrooms (sweet tooth, Hydnum umbilicatum) in Tarkhovka Park, west from Saint Petersburg. Russia, August 26, 2017
Primorskoye Shosse, Sankt-Peterburg, Russia, 197701Synonym: Dentinum umbilicatum.
Common names: depressed hedgehog, umbilicate hedgehog.
Russian name: Ezhovik pupkovidnyy.
Extract from Wikipedia article: Hydnum umbilicatum, commonly known as the depressed hedgehog, is a species of tooth fungus in the family Hydnaceae. It was scientifically described in 1902 by American mycologist Charles Horton Peck. It is found in eastern North America and in Europa, where it grows on boggy soil under conifer trees. It is edible.
Hydnum umbilicatum is a species of tooth fungus characterized by its small to medium size, depressed or umbilicate cap, and spines on the underside. In St. Petersburg, Leningrad Oblast, and north-western Russia, it typically grows in coniferous forests, often associated with mosses and lichens, from July to October. The fungus is relatively rare in the region, but can be found in areas with suitable habitat, such as spruce and pine forests with rich soil and moderate humidity.
Young depressed hedgehog mushrooms (sweet tooth, Hydnum umbilicatum) in Tarkhovka Park, west from Saint Petersburg. Russia, August 26, 2017Primorskoye Shosse, Sankt-Peterburg, Russia, 197701
Dissected depressed hedgehog mushrooms (sweet tooth, Hydnum umbilicatum) in Tarkhovka Park, west from Saint Petersburg. Russia, August 26, 2017Primorskoye Shosse, Sankt-Peterburg, Russia, 197701
Close-up of depressed hedgehog mushrooms (Hydnum umbilicatum) in Tarkhovka Park, west from Saint Petersburg. Russia, August 2, 2024Песчаная улица, Тарховка, Сестрорецк, Санкт-Петербург, Северо-Западный федеральный округ, 197706, Россия
Depressed hedgehog mushrooms (Hydnum umbilicatum) in Tarkhovka Park, west from Saint Petersburg. Russia, August 2, 2024Песчаная улица, Тарховка, Сестрорецк, Санкт-Петербург, Северо-Западный федеральный округ, 197706, РоссияObservations of Hydnum umbilicatum in Leningrad Oblast and north-western Russia reveal the fungus grows in Tarkhovka Park, west of Saint Petersburg. On August 26, 2017, young depressed hedgehog mushrooms were found, which were later dissected to observe their internal structure. Seven years later, on August 2, 2024, more observations were made, including close-up examinations of the mushrooms. The species was again found in the same park, indicating a consistent presence in the area. The observations suggest that Hydnum umbilicatum thrives in this region, with sightings recorded over multiple years, providing insight into its growth habits and distribution in north-western Russia. The repeated findings in Tarkhovka Park highlight the fungus's ability to persist in specific environments.
Russian web-forums Planeta Gribov, V Kontakte, and Griby Sredney Polosy for learning names of local mushrooms.
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