First person to use this name on MO: I. G. Safonov
Name: Butyriboletus peckii
Author: (Frost) K. Zhao, Z.L. Yang & Halling, comb. nov.
Preferred Synonyms:Caloboletus peckii (Frost) Vizzini
Deprecated Synonyms: Boletus peckii Frost
“Boletus peckii, originally described from North America, is characterized by a yellow tube layer that often bruises blue, a yellow reticulated stipe especially at the apex, firm yellow-tinged flesh that often turns blue when exposed, smooth spores and an interwoven trichodermic pileipellis. The phylogenetic position of this species is inferred by molecular phylogenetic analysis based on DNA sequences of four gene markers (ITS, nrLSU, tef1-α and rpb1). Both morphological features and molecular phylogenetic evidence indicate that this bolete belongs to Butyriboletus, and thus, should be transferred to the genus.”
— THIS IS A MODIFIED ABSTRACT FROM THE ABOVE REFERENCE