Cut false truffle mushroom Hydnotrya tulasnei in Toksovo, suburb of Saint Petersburg. Russia, July 19, 2016
ul. gruntovaya, Leningradskaya oblast', Russia, 188664Synonyms: Hydnobolites carneus, Hydnobolites tulasnei, Hydnotrya carnea, Rhizopogon carneus, Rhizopogon tulasnei.
Common name: red fold truffle.
Russian name: Triufel krasno-buryy.
Hydnotrya tulasnei is a species of truffle-like fungus that belongs to the family Discinaceae. In St. Petersburg and Leningrad Oblast, it has been found in coniferous forests, typically associated with spruce and pine trees. The fungus produces subterranean fruiting bodies that are irregularly shaped and warty. In north-western Russia, Hydnotrya tulasnei is considered a rare species, with limited records of its occurrence in the region's forests, often in areas with rich soil and moderate to high humidity.
Cut false truffle mushroom Hydnotrya tulasnei in Toksovo, suburb of Saint Petersburg. Russia, July 19, 2016ul. gruntovaya, Leningradskaya oblast', Russia, 188664
False truffle mushrooms Hydnotrya tulasnei found in sand on roadside in Toksovo, suburb of Saint Petersburg. Russia, July 19, 2016ul. gruntovaya, Leningradskaya oblast', Russia, 188664
Red fold truffle (Hydnotrya tulasnei) on partially burnt soil in a forest near Okhta River in Toksovo, north from Saint Petersburg. Russia, August 1, 2017ul. gruntovaya, Leningradskaya oblast', Russia, 188664
Red fold truffle (Hydnotrya tulasnei) near a site of old bonfire in a forest near Okhta River in Toksovo, north from Saint Petersburg. Russia, August 1, 2017ul. gruntovaya, Leningradskaya oblast', Russia, 188664
Red fold truffle (Hydnotrya tulasnei) on sandy soil in moss in a forest near Okhta River in Toksovo, north from Saint Petersburg. Russia, August 1, 2017ul. gruntovaya, Leningradskaya oblast', Russia, 188664
Cross section of red fold truffle (Hydnotrya tulasnei) in a forest near Okhta River in Toksovo, north from Saint Petersburg. Russia, August 1, 2017ul. gruntovaya, Leningradskaya oblast', Russia, 188664
Red fold truffle (Hydnotrya tulasnei) near a site of old campfire near Toksovo, north from Saint Petersburg. Russia, August 16, 2017Dachnaya ul., Leningradskaya oblast', Russia, 188664
Dissected red fold truffle (Hydnotrya tulasnei) near a site of old campfire near Toksovo, north from Saint Petersburg. Russia, August 16, 2017Dachnaya ul., Leningradskaya oblast', Russia, 188664Observations in Leningrad Oblast and north-western Russia revealed the presence of Hydnotrya tulasnei in various habitats. The fungus was found in sand on a roadside in Toksovo, as well as on partially burnt soil and near old bonfire sites in forests near the Okhta River. It also grew on sandy soil in moss. Multiple sightings occurred near Toksovo, north of Saint Petersburg, between July 2016 and August 2017. The fungus was often found near areas with disturbed soil, such as campfire sites. Cross sections and dissected specimens were observed, providing further insight into the morphology of Hydnotrya tulasnei in this region. The sightings suggest that the species may be associated with disturbed or burnt areas, and can thrive in a variety of substrates, including sand and moss.
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