 "Butyriboletus fechtneri" is native to Europe, where it forms ectomycorrhizal associations with various broad-leaved trees of the family Fagaceae, particularly oak ("Quercus"), beech ("Fagus") and chestnut ("Castanea").So far it has been molecularly confirmed from Austria, Bulgaria, Cyprus, Estonia, France, Spain and Sweden.It is considered an endangered species in the Czech Republic.