Name requested: Polyporus subgiganteus

	Mycologia 11 (6): 315.
	Mycotaxon 20 (2): 357.

Homotypic synonym: Tyromyces subgiganteus

Mycotaxon 20 (2): 357. 33: 322. 78: 254. 82: 236.

Heterotypic synonym: Polyporus spumeus var. malicola

	Mycologia 8 (1): 14. 46 (1): 121.
	Mycotaxon 2 (1): 23. 21: 332.

Heterotypic synonym: Tyromyces spumeus var. malicola

Mycotaxon 2 (1): 23. 20 (2): 357.