Summary description from Wikipedia:

Butyriboletus in languages:

Chinese

奶油牛肝菌屬

English

Butter Boletes

Lithuanian

Sviestbaravykis

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Parent Taxon

• Boletaceae

Sibling Taxa

• Afroboletus
• Amoenoboletus
• Australopilus
• Austroboletoideae
• Baorangia
• Binderoboletus
• Boletochaete
• Boletoideae
• Bothia
• Brasilioporus
• Buchwaldoboletus
• Butyriboletus
• Caloboletus
• Castellanea
• Chalciporus
• Costatisporus
• Crocinoboletus
• Cupreoboletus
• Cyanoboletus
• Erythrophylloporus
• Exsudoporus
• Frostiella
• Gastroboletus
• Guyanaporus
• Gymnogaster
• Heliogaster
• Hemilanmaoa
• Hemileccinum
• Hortiboletus
• Imperator
• Jimtrappea
• Lanmaoa
• Leccinoideae
• Longistriata
• Mycoamaranthus
• Neoboletus
• Phaeogyroporus
• Phylloporopsis
• Porphyrellus
• Pseudoboletus
• Pulveroboletus
• Rhodactina
• Rubroboletus
• Rugiboletus
• Singerocomus
• Solioccasus
• Strobilomyces
• Suillellus
• Sutorius
• Tengioboletus
• Tubosaeta
• Turmalinea
• Villoboletus
• Wakefieldia
• Xanthoconium
• Xerocomoideae
• Zangioideae

Child Taxa

• Butyriboletus abieticola
• Butyriboletus appendiculatus
• Butyriboletus autumniregius
• Butyriboletus brunneus
• Butyriboletus fechtneri
• Butyriboletus fuscoroseus
• Butyriboletus loyo
• Butyriboletus peckii
• Butyriboletus persolidus
• Butyriboletus primiregius
• Butyriboletus pseudoregius
• Butyriboletus pseudoroseoflavus
• Butyriboletus pulchriceps
• Butyriboletus querciregius
• Butyriboletus regius
• Butyriboletus roseoflavus
• Butyriboletus roseogriseus
• Butyriboletus roseopurpureus
• Butyriboletus sanicibus
• Butyriboletus subappendiculatus
• Butyriboletus subsplendidus
• Butyriboletus taughannockensis
• Butyriboletus yicibus

Top Observation Places

• Santa Rosa
• Walnut Creek