Name requested: Tyromyces subgiganteusMycotaxon 20 (2): 357. 33: 322. 78: 254. 82: 236.
Homotypic synonym: Polyporus subgiganteusMycologia 11 (6): 315. Mycotaxon 20 (2): 357.
Heterotypic synonym: Polyporus spumeus var. malicolaMycologia 8 (1): 14. 46 (1): 121. Mycotaxon 2 (1): 23. 21: 332.
Heterotypic synonym: Tyromyces spumeus var. malicolaMycotaxon 2 (1): 23. 20 (2): 357.