This is a work in progress, but here are 38 currently accepted species of porcini s.s. (i.e. not including “Alloboletus” sensu Dentinger et al. 2010). This will soon be updated following data from sequencing of type specimens…
Boletus aereus Bull. (=Boletus mamorensis Redeuilh)
Boletus atkinsonii Peck
Boletus austroedulis Halling & N.A. Fechner
Boletus bainiugan Dentinger
Boletus barrowsii Thiers & A.H. Sm.
Boletus botryoides B. Feng, Y.Y. Cui, J.P. Xu & Zhu L. Yang
Boletus castanopsidis Hongo
Boletus edulis Bull. (=Boletus chippewaensis A.H. Sm. & Thiers, =B. rubriceps Arora & Simonini)
Boletus fagacicola B. Feng, Y.Y. Cui, J.P. Xu & Zhu L. Yang
Boletus fibrillosus Thiers
Boletus frustulosus Peck
Boletus gigas Berk. (suspect — may be a Leccinum instead!)
Boletus himalayensis S. Jabeen, S. Sarwar & A. N. Khalid
Boletus hiratsukae Nagasawa
Boletus indoedulis D. Chakr., K. Das, Baghela, S. Adhikari & Halling
Boletus leptocephalus Peck
Boletus luteoloincrustatus R. Flores & Simonini
Boletus meiweiniuganjun Dentinger
Boletus monilifer B. Feng, Y.Y. Cui, J.P. Xu & Zhu L. Yang
Boletus mottiae Thiers
Boletus multipunctus Peck
Boletus nobilissimus Both & R. Reidel
Boletus occidentalis B. Ortiz & T.J. Baroni
Boletus phaeocephalus Pat. & Baker sensu Corner
Boletus pinophilus Pilát & Dermek
Boletus quercophilus Halling & G.M. Mueller
Boletus regineus D. Arora & Simonini
Boletus reticulatus Schaeff. (= B. aestivalis (Paulet) Fr.)
Boletus reticuloceps (M. Zang, M.S. Yuan, & M.Q. Gong) Q.B. Wang & Y.J. Yao
Boletus rex-veris D. Arora & Simonini
Boletus shiyong Dentinger
Boletus sinoedulis B. Feng, Y.Y. Cui, J.P. Xu & Zhu L. Yang
Boletus subalpinus (Trappe & Thiers) Nuhn, Manfr. Binder, A.F.S. Taylor, Halling & Hibbett
Boletus subcaerulescens (E.A. Dick & Snell) Both, Bessette, & A.R. Bessette (=B. edulis subsp. aurantioruber E.A. Dick & Snell)
Boletus subreticulatus Corner
Boletus umbrinipileus B. Feng, Y.Y. Cui, J.P. Xu & Zhu L. Yang
Boletus variipes Peck (=Boletus insuetus A.H. Sm. & Thiers)
Boletus viscidiceps B. Feng, Y.Y. Cui, J.P. Xu & Zhu L. Yang