 Boletus frustosusSummary: Boletus frustosus Snell E.A. Dick, Mycologia 33: 33 1941 MB284575Synonymy: Boletus calopus var. frustosus Snell E.A. Dick O.K. Mill. Watling, Notes from the Royal Botanical Garden Edinburgh 28 3: 322 1968 MB349066Caloboletus frustosus Snell E.A. Dick D. Arora J.L. Frank, Index Fungorum 194: 1 2014 MB550760MycoBank : 284575Epithet: frustosusAuthors: Snell E.A. DickAuthors abbreviated: Snell E.A. DickCaloboletus frustosus Snell E.A. Dick D. Arora J.L. Frank, Index Fungorum 194: 1 2014 MB5507601. Boletus calopus var. frustosus Snell E.A. Dick O.K. Mill. Watling, Notes from the Royal Botanical Garden Edinburgh 28 3: 322 1968 MB3490662. Caloboletus frustosus Snell E.A. Dick D. Arora J.L. Frank, Index Fungorum 194: 1 2014 MB550760 