They held it to be related to Boletus aestivalis .
Berkeley and Broome described Boletus portentosus in a report published in 1873 of the fungi of Ceylon , from a specimen with a 25 cm ( 8 in ) diameter cap collected on June 15 , 1869 .
They held Boletus portentosus to be related to Boletus aestivalis .
Berkeley and Broome described Boletus portentosus in a report published in 1873 of the fungi of Ceylon , from a specimen with a 25 cm ( 8 in ) diameter cap collected on June 15 , 1869 .