 In a 2001 analysis of ribosomal DNA sequences for a number of taxa in the Boletales order, "A. mirabilis" was found to be most closely related to species such as "Boletus edulis", "Phylloporus rhodoxanthus", and "Tylopilus felleus".Within the Boletales clade (a group of related species roughly equivalent to the Boletales order), these species were all in the so-called "boletoid radiation", a group of taxa that are thought to have diverged evolutionarily from a single boletoid ancestor.However, more recent studies containing more taxa have found "A. mirabilis" to be most closely related to "Aureoboletus" species.