Synonymy:
Boletus frostii J.L. Russell, in Frost, Bull. Buffalo Soc. nat. Sci. 2: 102 (1874) [1874-1875]
Suillus frostii (J.L. Russell) Kuntze, Revis. gen. pl. (Leipzig) 3(3): 535 (1898)
Suillellus frostii (J.L. Russell) Murrill, Mycologia 1(1): 17 (1909)
Tubiporus frostii (J.L. Russell) S. Imai, Trans. Mycol. Soc. Japan 8(3): 113 (1968)
Butyriboletus frostii (J.L. Russell) G. Wu, Kuan Zhao & Zhu L. Yang, in Wu, Li, Zhu, Zhao, Han, Cui, Li, Xu & Yang, Fungal Diversity 81: 72 (2016)

Boletus alveolatus Berk. & M.A. Curtis, in Frost, Bull. Buffalo Soc. nat. Sci. 2: 102 (1874) [1874-1875]

Position in classification:
Exsudoporus, Boletaceae, Boletales, Agaricomycetidae, Agaricomycetes, Basidiomycota, Fungi

Note:
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