Wood hedgehog mushrooms (Hydnum repandum) in Dibuny, near Saint Petersburg. Russia, August 20, 2017
Unnamed Road, Sankt-Peterburg, Russia, 197758Synonyms: Dentinum repandum, Fungus erinaceus, Hydnum album, Hydnum aurantium, Hydnum bicolor, Hydnum bulbosum, Hydnum clandestinum, Hydnum diffractum, Hydnum flavidum, Hydnum imbricatum, Hydnum medium, Hydnum pallidum, Hydnum rufescens, Hydnum tubaeforme, Hydnum washingtonianum, Hypothele repanda, Sarcodon abietinus, Sarcodon repandus, Tyrodon repandus.
Common name: wood hedgehog.
Russian names: Ezhovik zhioltyy, Ezhovik vyemchatyy, Gidnum vyemchatyy, Dentinum vyemchatyy, Ezhovik krasnovato-zheltyy, Ezhovik ryzheiushchiy.
Extract from Wikipedia article: Hydnum repandum, commonly known as the sweet tooth, wood hedgehog or hedgehog mushroom, is a basidiomycete fungus of the family Hydnaceae. First described by Carl Linnaeus in 1753, it is the type species of the genus Hydnum. The fungus produces fruit bodies (mushrooms) that are characterized by their spore-bearing structures—in the form of spines rather than gills—which hang down from the underside of the cap. The cap is dry, colored yellow to light orange to brown, and often develops an irregular shape, especially when it has grown closely crowded with adjacent fruit bodies. The mushroom tissue is white with a pleasant odor and a spicy or bitter taste. All parts of the mushroom stain orange with age or when bruised.
Hydnum repandum is a species of edible fungus that grows in association with trees, particularly conifers and birch. In St. Petersburg and Leningrad Oblast, it typically fruits from July to October, forming clusters on the ground in mossy areas, heathlands, and forest edges. The cap is 3-8 cm wide, wavy or irregular, and orange-brown to reddish-brown in color. The spines are white to cream-colored, decurrent, and densely packed. In north-western Russia, H. repandum is widely distributed and can be found in various habitats, including forests, bogs, and tundras, often in areas with acidic soils and moderate humidity.
Wood hedgehog mushrooms (Hydnum repandum) in Dibuny, near Saint Petersburg. Russia, August 20, 2017Unnamed Road, Sankt-Peterburg, Russia, 197758
Wood hedgehog mushrooms (Hydnum repandum) in a dark spruce forest on a slope of Volchya River in Petiayarvi, 50 miles north from Saint Petersburg. Russia, August 30, 2017Unnamed Road, Leningradskaya oblast', Russia, 188732
Sweet tooth mushrooms (Hydnum repandum)(?) in Sergievka Park. Old Peterhof, west from Saint Petersburg, Russia, October 5, 2017Oraniyenbaumskoye Shosse, 2, Petergof, Sankt-Peterburg, Russia, 198504
Sweet tooth mushrooms (Hydnum repandum) in a spruce forest in Sergievka Park. Old Peterhof, west from Saint Petersburg, Russia, October 5, 2017Oraniyenbaumskoye Shosse, 2, Petergof, Sankt-Peterburg, Russia, 198504
Young wood hedgehog mushroom (Hydnum repandum) in Aleksandrovsky (Alexander) Park. Pushkin (former Tsarskoe Selo) near Saint Petersburg, Russia, July 18, 2024Елевая аллея, Пушкин, Санкт-Петербург, Северо-Западный федеральный округ, 196631, Россия
Wood hedgehog mushrooms (Hydnum repandum) on an old railroad grade in Kuzmolovo, north from Saint Petersburg. Russia, August 9, 2024Бывшая узкоколейка, Город Всеволожск, Всеволожский район, Ленинградская область, Северо-Западный федеральный округ, 188663, РоссияObservations of Hydnum repandum in Leningrad Oblast and north-western Russia reveal the fungus grows in various environments. In Dibuny and Petiayarvi, it was found in dark spruce forests, often on slopes. In Sergievka Park, it thrived in a spruce forest, while in Aleksandrovsky Park, a young specimen was spotted. The fungus also grew on an old railroad grade in Kuzmolovo. The observations span different times of the year, with sightings in August, October, and July, indicating the fungus can be found in the region during summer and early fall. The locations range from near Saint Petersburg to 50 miles north, suggesting Hydnum repandum is widespread in the area. The variety of habitats and growth periods observed highlight the adaptability of this species in Leningrad Oblast and north-western Russia.
Russian web-forums Planeta Gribov, V Kontakte, and Griby Sredney Polosy for learning names of local mushrooms.
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