Extract from Wikipedia article: Tylopilus felleus, commonly known as the bitter bolete or the bitter tylopilus, is a fungus of the bolete family. Its distribution includes east Asia, Europe, and eastern North America, extending south into Mexico and Central America. A mycorrhizal species, it grows in deciduous and coniferous woodland, often fruiting under beech and oak. Its fruit bodies have convex to flat caps that are some shade of brown, buff, or tan, and typically measure up to 15 cm (6 in) in diameter. The pore surface is initially white before turning pinkish with age. Like most boletes it lacks a ring, and it may be distinguished from Boletus edulis and other similar species by its unusual pink pores and the prominent dark brown netlike pattern on its stalk.
Bitter bolete mushroom (Tylopilus felleus) near Kavgolovskoe Lake south from Oselki, 8 miles north from Saint Petersburg. Russia, August 25, 2013 Новый переулок, 5, Leningrad Oblast, Russia
Bitter bolete mushrooms (Tylopilus felleus) growing from a tree base near Kavgolovskoe Lake south from Oselki, 8 miles north from Saint Petersburg. Russia, August 25, 2013 Новый переулок, 5, Leningrad Oblast, Russia
Very small bitter Bolete mushrooms (Tylopilus felleus)(?) under spruce trees near Young Bride Alley in Pavlovsk Park. Pavlovsk near Saint Petersburg, Russia, July 28, 2016 alleya Molodogo Zhenikha, Pavlovsk, g. Sankt-Peterburg, Russia
Bitter Bolete mushrooms (Tylopilus felleus) under spruce trees in area of Old Sylvia in Pavlovsk Park. Pavlovsk near Saint Petersburg, Russia, July 28, 2016 Колонна "Конец света", Okruzhnaya al., Pavlovsk, g. Sankt-Peterburg, Russia, 196625
Bitter bolete mushroom (Tylopilus felleus) near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, August 2, 2016 Unnamed Road, Leningradskaya oblast', Russia, 188664
Small bitter bolete mushrooms (Tylopilus felleus) in Dibuny, north-west from Saint Petersburg, Russia, August 9, 2016 Unnamed Road, g. Sankt-Peterburg, Russia, 197758
Bitter bolete mushrooms (Tylopilus felleus) in Dibuny, north-west from Saint Petersburg, Russia, August 9, 2016 Unnamed Road, g. Sankt-Peterburg, Russia, 197758
Young bitter bolete mushrooms (Tylopilus felleus) near Orekhovo, north from Saint Petersburg. Russia, August 13, 2016 Unnamed Road, Vaskelovo, Leningradskaya oblast', Russia, 188731
Young bitter bolete mushroom (Tylopilus felleus) near Lisiy Nos, west from Saint Petersburg. Russia, July 27, 2017 Primorskoye sh., Sankt-Peterburg, Russia, 197755
Bitter bolete mushrooms (Tylopilus felleus) near a stump in Yuntolovsky Park. Saint Petersburg, Russia, August 3, 2017 Zapadniy Skorostnoy Diameter, Sankt-Peterburg, Russia, 197373
Young bitter bolete mushrooms (Tylopilus felleus) in Pavlovsk Park. Pavlovsk, suburb of Saint Petersburg, Russia, August 5, 2017 Lipetskaya al., Pavlovsk, Sankt-Peterburg, Russia, 196625
Small bitter bolete mushrooms (Tylopilus felleus) in Pavlovsk Park. Pavlovsk, suburb of Saint Petersburg, Russia, August 5, 2017 Lipetskaya al., Pavlovsk, Sankt-Peterburg, Russia, 196625
Bitter bolete mushroom (Tylopilus felleus) in Dibuny, near Saint Petersburg. Russia, August 20, 2017 Unnamed Road, Sankt-Peterburg, Russia, 197758
Bitter bolete mushroom (Tylopilus felleus) in a spruce forest on west side of Kavgolovskoe Lake near Toksovo, north from Saint Petersburg. Russia, August 25, 2017 Unnamed Road, Osel'ki, Leningradskaya oblast', Russia, 188665
Penny bun (Boletus edulis) and Bitter bolete mushroom (Tylopilus felleus) grown at the base of an ant hill in a forest on west side of Kavgolovskoe Lake near Toksovo, north from Saint Petersburg. Russia, August 25, 2017 Unnamed Road, Osel'ki, Leningradskaya oblast', Russia, 188665
Lower view of Penny bun (Boletus edulis) and Bitter bolete mushroom (Tylopilus felleus) grown at the base of an ant hill in a forest on west side of Kavgolovskoe Lake near Toksovo, north from Saint Petersburg. Russia, August 25, 2017 Unnamed Road, Osel'ki, Leningradskaya oblast', Russia, 188665
Dumped collection of bitter bolete mushrooms (Tylopilus felleus) and one young Leccinum on Lenin Trail near Dibuny, north-west from Saint Petersburg. Russia, July 29, 2024 Ленинская тропа, Дибуны, Песочный, Санкт-Петербург, Северо-Западный федеральный округ, 197758, Россия
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